EP1131543A1 - Device for emptying a container of viscous fluid - Google Patents

Device for emptying a container of viscous fluid

Info

Publication number
EP1131543A1
EP1131543A1 EP99972286A EP99972286A EP1131543A1 EP 1131543 A1 EP1131543 A1 EP 1131543A1 EP 99972286 A EP99972286 A EP 99972286A EP 99972286 A EP99972286 A EP 99972286A EP 1131543 A1 EP1131543 A1 EP 1131543A1
Authority
EP
European Patent Office
Prior art keywords
container
volume
piston
chamber
outside
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
EP99972286A
Other languages
German (de)
French (fr)
Other versions
EP1131543B1 (en
Inventor
Thierry Arbey
Patrick Gastaldello
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1131543A1 publication Critical patent/EP1131543A1/en
Application granted granted Critical
Publication of EP1131543B1 publication Critical patent/EP1131543B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M11/045—Removing lubricant by suction

Definitions

  • the present invention relates to devices making it possible, in an environment where a pressurized atmosphere and a gravitational force prevail, to empty a container of viscous fluid, devices which find a particularly advantageous application for draining the oil contained in the blocks. engines for motor vehicles or the like.
  • the device described in this document comprises a pump arranged in a housing arranged in the main container capable of collecting the products to be drained like oil or the like.
  • the pump has a suction mouth located in the bottom of the pump body. As this suction mouth must be placed in communication with the top of the container, it is necessarily connected with it by a flexible pipe making it possible to place this pump in its housing as shown in FIG. 1 of this document.
  • the present invention therefore aims to provide a device for, in an environment where a pressurized atmosphere and a gravitational force prevail, to empty a viscous fluid container, which is of a very simple structure, easy to make, d '' a very low cost price, which can be used by everyone, professionals or individuals.
  • the subject of the present invention is a device allowing, in an environment where there is a pressurized atmosphere and a gravitational force, to empty a viscous fluid container, comprising:
  • a container defining a main volume capable of containing said viscous fluid, said container being shaped to be able to be placed in said medium so that the main volume comprises an upper part and a lower part,
  • a pump comprising a suction inlet and a discharge outlet
  • Figures 1 and 2 show, seen in schematic section, respectively two embodiments of a device according to the invention for emptying a viscous fluid container.
  • Figures 1 and 2 represent two embodiments of the device according to the invention, the same references designate the same elements or means there, whatever the figure on which they appear and whatever the shape of representation of these means.
  • the device an embodiment of which is illustrated in FIG. 1, makes it possible to empty a container of viscous fluid like oil contained in the engine block of a motor vehicle or the like, in a environment in which there is a pressurized atmosphere and a gravitational force, as in the ambient air reigning on Earth.
  • This device comprises a container 1 with a wall 1 defining a main volume 2 able to contain viscous fluid, this container being shaped to be able to be placed in the ambient medium so that the main volume has a high part 3 and a low part 4.
  • a partition wall 5 located in the main volume 2 delimits, in this main volume, two first and second secondary volumes 6, 7, the first secondary volume 6 including at least a portion 9 of the upper part 3 of the main volume 2.
  • An orifice 8 is made in the partition wall 5 to put the two first and second secondary volumes 6, 7 into communication, this orifice opening into the second secondary volume 7 in the portion 9 defined above of the upper part 3 of the volume main.
  • the device further comprises a pump 10 comprising a suction inlet 11 and a discharge outlet 12.
  • the pump is mounted in cooperation with the container 1, and more particularly with its wall 19 as will be described below, so that its suction inlet 11 is located in the first secondary volume 6 and that its discharge outlet 12 opens to the outside 13 of the container 1.
  • the device also comprises a tube 14 comprising an inlet mouth 15 and an outlet mouth 16, and means 17 for mounting this tube 14 in association with the container 1 so that its outlet mouth 16 is located in the second volume secondary 7 and that its inlet mouth 15 is located outside 13 of the container 1, the end 18 of the tube 14 comprising the inlet mouth 15 being shaped to be able to immerse in the container to be drained.
  • the end 1 8 of the tubing 1 4 comprising the inlet mouth 15 is flexible so as to be able to easily plunge into the bottom of the greatest possible number of containers of any shape whatsoever, and the means 17 defined above are advantageously constituted by a sealed passage 24 produced in the wall 19 of container 1.
  • This sealed passage is advantageously coupled with a removable plug to allow the container 1 to be emptied when it is relatively full and thus be able to reuse the device for another emptying.
  • the device is arranged so that the secondary volume 7 defined above is divided into two first and second auxiliary volumes 21, 22, these two auxiliary volumes communicating with each other by a constriction 23 preferably formed between the wall 19 of the container and the separation wall 5, this constriction constituting a significant pressure drop for the viscous fluid.
  • the first auxiliary volume 21 is located in the upper part 3 of the main volume 2 and the orifice 8 opens into this first auxiliary volume 21.
  • the device comprises a pump 10.
  • this pump 10 comprises a cylindrical body 30, one first end 33 of which is tightly secured to the wall 19 of the container 1 and the other of which end 34 opens into the first secondary volume 6; a piston 35 slidably mounted in the cylindrical body 30; a rod 36 for controlling the translation of the piston; and a valve 38 mounted in cooperation with the piston 35, this valve being “on” when the control rod 36 enters in translation in the cylindrical body 30 in the direction indicated by the arrow 61 in the figure, and “closed” when the control rod exits the cylindrical body by the translation indicated by the arrow 62 in this same figure.
  • the control rod 36 is further produced so that it passes without sealing through an opening 31 made in the wall 19 of the container and that one of its ends 37 is constantly located outside 13 of the container 1.
  • the partition wall 5 is advantageously constituted by a cylindrical sleeve 40 of a length greater than that of the cylindrical body 30, this sleeve being mounted integral, at one of its ends 41, 42, with the wall 19 of the container 1 so that it is substantially concentric with the cylindrical body 30 by delimiting, between its internal face 45 and the external face 46 of the cylindrical body, a first annular space 43, and by a plug 44 for sealingly closing the other end 42 of this sleeve 40.
  • the first auxiliary volume 21 forms around the sleeve 40 a second annular cylindrical space 50 of the same thickness as the constriction defined above, this second annular space 50 being in fact, as visible in the figure, d 'a length less than the length of the sleeve 40.
  • the device For safety and to obtain correct operation whatever the volume of the fluid to be drained, the device comprises a valve 55 mounted in cooperation with the orifice 8 so that this valve is "passing" in the direction of the second secondary volume 7 towards the first secondary volume 6.
  • the valve 55 is constituted by an elastic ring 56 mounted in the first annular space 43 and by a sealing stud 57 mounted in cooperation with the ring 56 so that it is capable of closing the orifice 8 under the elastic force exerted by this ring, and to move away from this orifice when the ambient atmosphere is sucked in by the pump 10 to pass, as will be explained below, from the second secondary volume 7 to the first secondary volume 6.
  • the device has a structure like that described above, it is advantageous that at least the container 1, the partition wall 5, the tube 14 and the cylindrical body 30 are made of plastic, in particular by molding, which can only help to considerably reduce the manufacturing price of this device according to the invention.
  • this device is used in an environment where there is a pressurized atmosphere and a gravitational force, for example on Earth, that the container 1 is initially completely empty of any liquid and that one proposes to use it to drain the oil contained in the not shown engine block of a motor vehicle or the like.
  • the end 18 of the pipe 14 is introduced into the engine block so that its inlet mouth 15 plunges into the oil, preferably to the bottom of the engine block.
  • control rod 36 is then moved back and forth according to the arrows 61 and 62 so that the piston 35 traverses the interior 32 of the cylindrical body 30.
  • the valve 38 is on and the piston 35 sinks without appreciable displacement of the atmosphere which is in the cylindrical body.
  • the valve 38 closes and creates a vacuum between the piston 35 and the suction inlet 11.
  • the atmosphere which is in the cylindrical body 30 above the piston is evacuated by the discharge outlet 12 constituted, in the illustrated embodiment, by the opening 31.
  • the atmosphere which is in the second volume secondary 7 is sucked to enter the first secondary volume 6 by opening the valve 55.
  • the depression which occurs in the second secondary volume 7 makes it possible to suck up the oil contained in the engine block due to the pressure difference which product between the atmosphere outside the container 1 and which acts on the oil to be drained and that which reigns in the second secondary volume 7.
  • the discharge outlet 12 of the pump is coincident with the opening 31. Also, so that the atmosphere which is extracted from the container when the control rod 36 is pulled along the arrow 62, can exit outside the container 13, the section of the opening 31 is made so that it is greater than the cross section of the control rod 36 so that there is sufficient space between this rod control and the edge of the opening, as shown in the figure.
  • FIG. 2 represents a second embodiment of a device according to the invention, the main characteristics of which are defined above, in particular with regard to the figure 1.
  • the device comprises, as in the first embodiment, a pump 10 mounted in cooperation with the container 1 of which only a part has been shown, so that its suction inlet 11 is located in the first secondary volume 6 and that its delivery outlet 12 opens to the outside 13 of the container.
  • the pump 10 comprises a pump body constituted by the partition wall 5 defined above in the description of the first embodiment, a piston 70 mounted to slide in the pump body 5 to delimit, in the first secondary volume 6, two first 71 and second 72 chambers, the orifice 8 opening into the first chamber 71 via the valve 55, as in the first embodiment according to FIG. 1.
  • the piston 70 is shaped as a second valve so that the latter valve is “on” when the piston 70 moves in the pump body when the volume of the first chamber 71 decreases and that of the second chamber 72 increases. , and “closing" when this piston moves so that the volume of the first chamber increases and that of the first chamber decreases.
  • the pump 10 also comprises a control rod 73 for the translation of the piston 70 in the pump body 5, one end 74 of this control rod being located outside 13 of the container 1, passing through a sliding sealed passage 75 la wall 76 of the container 1 separating the first chamber 71 and the exterior 13, means 77 for communicating the second chamber 72 with the exterior 13 of the container 1, and valve means 78 having a "passing" direction only in the direction of the second chamber 72 towards the outside 13 of the container.
  • the sliding sealed passage 75 is represented diagrammatically by a breakthrough surrounded by a sealing bellows connecting the edge of this breakthrough and the piston 70, but it is quite obvious that this sealed passage can be constituted by other means, for example by an O-ring seal or the like.
  • the means 77 for putting the second chamber 72 into communication with the outside 1 3 of the container are constituted by a pipe 79 passing through the piston 70 and at least partially the control rod 73 so that its two ends 80, 81 constantly open respectively into the second chamber 72 and outside 13 of the container.
  • the valve means 78 are mounted in cooperation with this pipe 79, for example at its end 81.
  • Valve means 78 like those defined above are well known in themselves and will not be described specifically here, for the sole purpose of simplifying the present description.
  • the piston 70 shaped as a second valve comprises for example a piston body 82 of an outer section smaller than the section of the first secondary volume 6, a circular groove 83 produced in this piston body , an annular seal 84 disposed in the circular groove, the outer annular section of the seal 84 being equal to the inner section of the first secondary volume 6 and its inner annular section being equal to the bottom section 85 of the groove 83, the width of the groove being greater than the thickness of the annular seal, and means 86 for bringing the circular groove 83 into communication with the second chamber 72.
  • the piston 70 which reduces the volume of the second chamber 72.
  • the piston 70 being shaped as a "shutter" valve when it moves in the direction of reducing the volume of the second chamber, it makes it possible to compress the air located in this chamber 72 and to expel it, via the pipe 79 and the valve 78, towards the outside 13 of the container 1 .

Abstract

Devices for emptying a container of viscous fluid in an ambient medium where there exists an atmosphere under pressure and a force of gravity. The device of the invention is essentially characterized by the fact that it comprises a receptacle 1 having a main volume 2 comprising top and bottom portions 3 and 4 and in which a separation wall 5 defines two secondary volumes 6 and 7, an orifice 8 made through the wall 5 to put the two secondary volumes 6 and 7 into communication, and opening out into the secondary volume 7 in the top portion 3 of the main volume, a pump 10 mounted to co-operate with the receptacle 1, its suction inlet 11 being in the volume 6 and its outlet 12 opening out to the outside 13 of the receptacle 1, a tube 14, and means 17 for mounting the tube 14 in association with the receptacle 1 so that its outlet opening 16 is situated in the secondary volume 7 and its inlet opening 15 lies outside the receptacle 1. The invention is particularly applicable to changing engine oil in motor vehicles, or the like.

Description

Dispositif permettant de vidanger un conteneur de fluide visqueux Device for emptying a viscous fluid container
La présente invention concerne les dispositifs permettant, dans un milieu où régnent une atmosphère sous pression et une force de gravitation, de vidanger un conteneur de fluide visqueux, dispositifs qui trouvent une application particulièrement avantageuse pour la vidange de l'huile contenue dans les blocs-moteurs des véhicules automobiles ou analogues.The present invention relates to devices making it possible, in an environment where a pressurized atmosphere and a gravitational force prevail, to empty a container of viscous fluid, devices which find a particularly advantageous application for draining the oil contained in the blocks. engines for motor vehicles or the like.
Il existe déjà des dispositifs qui permettent de vidanger les conteneurs de fluides visqueux. Mais ces dispositifs connus présentent des structures complexes qui en limitent considérablement leur utilisation, notamment par les particuliers qui veulent réaliser eux-mêmes la vidange de l'huile-moteur de leur véhicule automobile.There are already devices which make it possible to empty the containers of viscous fluids. However, these known devices have complex structures which considerably limit their use, in particular by individuals who want to carry out the draining of the engine oil from their motor vehicle.
Un exemple de tels dispositifs est décrit dans le US-A- 1 439 295. Le dispositif décrit dans ce document comporte une pompe disposée dans un logement agencé dans le récipient principal apte à récolter les produits à vidanger comme de l'huile ou analogue. La pompe comporte une bouche d'aspiration disposée dans le fond du corps de pompe. Comme cette bouche d'aspiration doit être mise en communication avec le haut du récipient, elle est obligatoirement reliée avec lui par une conduite souple permettant de placer cette pompe dans son logement comme représenté sur la figure 1 de c e document.An example of such devices is described in US-A-1,439,295. The device described in this document comprises a pump arranged in a housing arranged in the main container capable of collecting the products to be drained like oil or the like. The pump has a suction mouth located in the bottom of the pump body. As this suction mouth must be placed in communication with the top of the container, it is necessarily connected with it by a flexible pipe making it possible to place this pump in its housing as shown in FIG. 1 of this document.
Un telle structure présente incontestablement des inconvénients. Notamment, elle limite la dépression de la pompe. En effet, il est certain que, au-delà d'une certaine valeur de dépression, la conduite souple peut s'écraser. En outre, il est très difficile de réaliser des passages étanches aux deux extrémités de cette conduite, du fait notamment de sa souplesse. Enfin, il est tout aussi certain que le montage d'un tel dispositif ne peut être fait que manuellement et que sa structure interdit donc toute industrialisation par production en grande série.Such a structure undoubtedly has drawbacks. In particular, it limits the vacuum of the pump. Indeed, it is certain that, beyond a certain vacuum value, the flexible pipe can be crushed. In addition, it is very difficult to produce sealed passages at the two ends of this pipe, due in particular to its flexibility. Finally, it is just as certain that the mounting of such a device can only be done manually and that its structure therefore prohibits any industrialization by mass production.
La présente invention a ainsi pour but de réaliser un dispositif permettant, dans un milieu où régnent une atmosphère sous pression et une force de gravitation, de vidanger un conteneur de fluide visqueux, qui soit d'une structure très simple, facile à réaliser, d'un prix de revient très faible, et qui puisse être utilisé par tous, professionnels ou particuliers.The present invention therefore aims to provide a device for, in an environment where a pressurized atmosphere and a gravitational force prevail, to empty a viscous fluid container, which is of a very simple structure, easy to make, d '' a very low cost price, which can be used by everyone, professionals or individuals.
Plus précisément, la présente invention a pour objet un dispositif permettant, dans un milieu où régnent une atmosphère sous pression et une force de gravitation, de vidanger un conteneur de fluide visqueux, comportant:More specifically, the subject of the present invention is a device allowing, in an environment where there is a pressurized atmosphere and a gravitational force, to empty a viscous fluid container, comprising:
- un récipient définissant un volume principal apte à contenir ledit fluide visqueux, ledit récipient étant conformé pour être apte à être placé dans ledit milieu de façon que le volume principal comporte une partie haute et partie basse,a container defining a main volume capable of containing said viscous fluid, said container being shaped to be able to be placed in said medium so that the main volume comprises an upper part and a lower part,
- une pompe comportant une entrée d'aspiration et une sortie de refoulement,- a pump comprising a suction inlet and a discharge outlet,
- une tubulure comportant une bouche d'entrée et une bouche de sortie,- a tube comprising an inlet mouth and an outlet mouth,
- des moyens pour monter la tubulure en association avec le récipient de façon que ses bouches d'entrée et de sortie soit respectivement situées à l'extérieur et à l'intérieur du récipient, l'extrémité de la tubulure comportant la bouche d'entrée étant conformée pour être apte à plonger dans le conteneur à vidanger, caractérisé par le fait qu'il comporte en outre une paroi de séparation pour délimiter, dans le volume principal, deux premier et second volumes secondaires, le premier volume secondaire englobant au moins une portion de la partie haute du volume principal, et un orifice réalisé dans la paroi de séparation pour mettre en communication les deux premier et second volumes secondaires, ledit orifice débouchant dans le second volume secondaire dans ladite portion de la partie haute du volume principal, par le fait que ladite pompe est montée en coopération avec le récipient de façon que son entrée d'aspiration soit située dans le premier volume secondaire et que sa sortie de refoulement débouche à l'extérieur du récipient, et que la bouche de sortie de la tubulure est située dans le second volume secondaire. D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif, mais nullement limitatif, dans lesquels:- Means for mounting the tubing in association with the container so that its inlet and outlet ports are respectively located outside and inside the container, the end of the tube comprising the inlet mouth being shaped to be able to immerse in the container to be emptied, characterized in that it further comprises a partition wall to delimit, in the main volume, two first and second secondary volumes, the first secondary volume including at least one portion of the upper part of the main volume, and an orifice made in the partition wall for connecting the two first and second secondary volumes, said orifice opening into the second secondary volume in said portion of the upper part of the main volume, by the fact that said pump is mounted in cooperation with the container so that its suction inlet is located in the first dry volume and that its delivery outlet opens to the outside of the container, and that the outlet mouth of the tubing is located in the second secondary volume. Other characteristics and advantages of the present invention will appear during the following description given with reference to the drawings annexed by way of illustration, but in no way limiting, in which:
Les figures 1 et 2 représentent, vus en coupe schématique, respectivement deux modes de réalisation d'un dispositif selon l'in\ ention permettant de vidanger un conteneur de fluide visqueux.Figures 1 and 2 show, seen in schematic section, respectively two embodiments of a device according to the invention for emptying a viscous fluid container.
Il est précisé que, bien que les figures 1 et 2 représentent deux modes de réalisation du dispositif selon l'invention, les mêmes références y désignent les mêmes éléments ou moyens, quelle que soit la figure sur laquelle elles apparaissent et quelle que soit la forme de représentation de ces moyens. Le dispositif dont un mode de réalisation est illustré sur la figure 1 permet de vidanger un conteneur de fluide visqueux comme de l 'hui le contenue dans le bloc-moteur d'un véhicule automobile ou analogue, dans un milieu où régnent une atmosphère sous pression et une force de gravitation, comme dans l'air ambiant régnant sur la Terre.It is specified that, although Figures 1 and 2 represent two embodiments of the device according to the invention, the same references designate the same elements or means there, whatever the figure on which they appear and whatever the shape of representation of these means. The device, an embodiment of which is illustrated in FIG. 1, makes it possible to empty a container of viscous fluid like oil contained in the engine block of a motor vehicle or the like, in a environment in which there is a pressurized atmosphere and a gravitational force, as in the ambient air reigning on Earth.
Ce dispositif comporte un récipient 1 de paroi 1 définissant un volume principal 2 apte à contenir du fluide visqueux, ce récipient étant conformé pour être apte à être placé dans le milieu ambiant de façon que le volume principal comporte une partie haute 3 et une partie basse 4.This device comprises a container 1 with a wall 1 defining a main volume 2 able to contain viscous fluid, this container being shaped to be able to be placed in the ambient medium so that the main volume has a high part 3 and a low part 4.
Une paroi de séparation 5 située dans le volume principal 2 délimite, dans ce volume principal, deux premier et second volumes secondaires 6, 7, le premier volume secondaire 6 englobant au moins une portion 9 de la partie haute 3 du volume principal 2.A partition wall 5 located in the main volume 2 delimits, in this main volume, two first and second secondary volumes 6, 7, the first secondary volume 6 including at least a portion 9 of the upper part 3 of the main volume 2.
Un orifice 8 est réalisé dans la paroi de séparation 5 pour mettre en communication les deux premier et second volumes secondaires 6, 7, cet orifice débouchant dans le second volume secondaire 7 dans la portion 9 définie ci- avant de la partie haute 3 du volume principal. Le dispositif comporte en outre une pompe 10 comprenant une entrée d'aspiration 11 et une sortie de refoulement 12. La pompe est montée en coopération avec le récipient 1, et plus particulièrement avec sa paroi 19 comme il sera décrit ci-après, de façon que son entrée d'aspiration 11 soit située dans le premier volume secondaire 6 et que sa sortie de refoulement 12 débouche à l'extérieur 13 du récipient 1.An orifice 8 is made in the partition wall 5 to put the two first and second secondary volumes 6, 7 into communication, this orifice opening into the second secondary volume 7 in the portion 9 defined above of the upper part 3 of the volume main. The device further comprises a pump 10 comprising a suction inlet 11 and a discharge outlet 12. The pump is mounted in cooperation with the container 1, and more particularly with its wall 19 as will be described below, so that its suction inlet 11 is located in the first secondary volume 6 and that its discharge outlet 12 opens to the outside 13 of the container 1.
Le dispositif comporte aussi une tubulure 14 comprenant une bouche d'entrée 15 et une bouche de sortie 16, et des moyens 17 pour monter cette tubulure 14 en association avec le récipient 1 de façon que sa bouche de sortie 16 soit située dans le second volume secondaire 7 et que sa bouche d'entrée 15 soit située à l'extérieur 13 du récipient 1 , l'extrémité 18 de la tubulure 14 comportant la bouche d'entrée 15 étant conformée pour être apte à plonger dans le conteneur à vidanger.The device also comprises a tube 14 comprising an inlet mouth 15 and an outlet mouth 16, and means 17 for mounting this tube 14 in association with the container 1 so that its outlet mouth 16 is located in the second volume secondary 7 and that its inlet mouth 15 is located outside 13 of the container 1, the end 18 of the tube 14 comprising the inlet mouth 15 being shaped to be able to immerse in the container to be drained.
De façon préférentielle et avantageuse, l'extrémité 1 8 de la tubulure 1 4 comportant la bouche d'entrée 15 est souple pour pouvoir aisément plonger jusque dans le fond du plus grand nombre possible de conteneurs de quelque forme qu'ils soient, et les moyens 17 définis ci-dessus sont avantageusement constitués par un passage étanche 24 réalisé dans la paroi 19 du récipient 1.Preferably and advantageously, the end 1 8 of the tubing 1 4 comprising the inlet mouth 15 is flexible so as to be able to easily plunge into the bottom of the greatest possible number of containers of any shape whatsoever, and the means 17 defined above are advantageously constituted by a sealed passage 24 produced in the wall 19 of container 1.
Ce passage étanche est avantageusement couplé avec un bouchon amovible pour permettre de vider le récipient 1 quand il est relativement plein et pouvoir ainsi réutiliser le dispositif pour une autre vidange.This sealed passage is advantageously coupled with a removable plug to allow the container 1 to be emptied when it is relatively full and thus be able to reuse the device for another emptying.
De façon préférentielle également, le dispositif est agencé de façon que le volume secondaire 7 défini ci-avant soit divisé en deux premier et second volumes auxiliaires 21, 22, ces deux volumes auxiliaires communiquant l'un avec l'autre par un étranglement 23 formé préférentiellement entre la paroi 19 du récipient et la paroi de séparation 5, cet étranglement constituant une perte de charge importante pour le fluide visqueux. Le premier volume auxiliaire 21 est situé en partie haute 3 du volume principal 2 et l'orifice 8 débouche dans ce premier volume auxiliaire 21.Also preferably, the device is arranged so that the secondary volume 7 defined above is divided into two first and second auxiliary volumes 21, 22, these two auxiliary volumes communicating with each other by a constriction 23 preferably formed between the wall 19 of the container and the separation wall 5, this constriction constituting a significant pressure drop for the viscous fluid. The first auxiliary volume 21 is located in the upper part 3 of the main volume 2 and the orifice 8 opens into this first auxiliary volume 21.
Comme mentionné ci-avant, le dispositif comporte une pompe 10. Dans un mode de réalisation avantageux, cette pompe 10 comporte un corps cylindrique 30 dont une première extrémité 33 est solidaire de façon étanche de la paroi 19 du récipient 1 et dont l'autre extrémité 34 débouche dans le premier volume secondaire 6 ; un piston 35 monté coulissant dans le corps cylindrique 30 ; une tige de commande 36 de la translation du piston ; et une valve 38 montée en coopération avec le piston 35 , cette valve étant "passante" lorsque la tige de commande 36 pénètre par translation dans le corps cylindrique 30 dans le sens indiqué par la flèche 61 sur la figure, et "fermée" lorsque la tige de commande sort du corps cylindrique par la translation indiquée par la flèche 62 sur cette même figure. La tige de commande 36 est de plus réalisée de façon qu'elle passe sans étanchéité par une ouverture 31 réalisée dans la paroi 19 du récipient et que l'une 37 de ses extrémités soit constamment située à l'extérieur 13 du récipient 1.As mentioned above, the device comprises a pump 10. In an advantageous embodiment, this pump 10 comprises a cylindrical body 30, one first end 33 of which is tightly secured to the wall 19 of the container 1 and the other of which end 34 opens into the first secondary volume 6; a piston 35 slidably mounted in the cylindrical body 30; a rod 36 for controlling the translation of the piston; and a valve 38 mounted in cooperation with the piston 35, this valve being "on" when the control rod 36 enters in translation in the cylindrical body 30 in the direction indicated by the arrow 61 in the figure, and "closed" when the control rod exits the cylindrical body by the translation indicated by the arrow 62 in this same figure. The control rod 36 is further produced so that it passes without sealing through an opening 31 made in the wall 19 of the container and that one of its ends 37 is constantly located outside 13 of the container 1.
Comme illustré sur la figure 1 , la paroi de séparation 5 est avantageusement constituée par un manchon cylindrique 40 d'une longueur supérieure à celle du corps cylindrique 30, ce manchon étant monté solidaire, en une 41 de ses extrémités 41, 42, de la paroi 19 du récipient 1 de façon qu'il soit sensiblement concentrique au corps cylindrique 30 en délimitant, entre sa face intérieure 45 et la face extérieure 46 du corps cylindrique, un premier espace annulaire 43, et par un bouchon 44 pour fermer de façon étanche l'autre extrémité 42 de ce manchon 40.As illustrated in FIG. 1, the partition wall 5 is advantageously constituted by a cylindrical sleeve 40 of a length greater than that of the cylindrical body 30, this sleeve being mounted integral, at one of its ends 41, 42, with the wall 19 of the container 1 so that it is substantially concentric with the cylindrical body 30 by delimiting, between its internal face 45 and the external face 46 of the cylindrical body, a first annular space 43, and by a plug 44 for sealingly closing the other end 42 of this sleeve 40.
Dans une forme préférentielle, le premier volume auxiliaire 21 forme autour du manchon 40 un second espace cylindrique annulaire 50 de la même épaisseur que l'étranglement défini ci-avant, ce second espace annulaire 50 étant de fait, comme visible sur la figure, d'une longueur inférieure à la longueur du manchon 40.In a preferred form, the first auxiliary volume 21 forms around the sleeve 40 a second annular cylindrical space 50 of the same thickness as the constriction defined above, this second annular space 50 being in fact, as visible in the figure, d 'a length less than the length of the sleeve 40.
Par sécurité et pour obtenir un fonctionnement correct quel que soit le volume du fluide à vidanger, le dispositif comporte un clapet 55 monté en coopération avec l'orifice 8 de façon que ce clapet soit "passant" dans le sens du second volume secondaire 7 vers le premier volume secondaire 6. WO 00/29725 --; PCT/FR99/02775For safety and to obtain correct operation whatever the volume of the fluid to be drained, the device comprises a valve 55 mounted in cooperation with the orifice 8 so that this valve is "passing" in the direction of the second secondary volume 7 towards the first secondary volume 6. WO 00/29725 -; PCT / FR99 / 02775
Dans une réalisation avantageuse, le clapet 55 est constitué par une bague élastique 56 montée dans le premier espace annulaire 43 et par un plot d'obturation 57 monté en coopération avec la bague 56 de façon qu'il soit apte à obturer l'orifice 8 sous l'effort élastique exercé par cette bague, et à s'éloigner de cet orifice lorsque l'atmosphère ambiante est aspirée par la pompe 10 pour passer, comme il sera explicité ci-après, du second volume secondaire 7 vers le premier volume secondaire 6.In an advantageous embodiment, the valve 55 is constituted by an elastic ring 56 mounted in the first annular space 43 and by a sealing stud 57 mounted in cooperation with the ring 56 so that it is capable of closing the orifice 8 under the elastic force exerted by this ring, and to move away from this orifice when the ambient atmosphere is sucked in by the pump 10 to pass, as will be explained below, from the second secondary volume 7 to the first secondary volume 6.
Si le dispositif a une structure comme celle qui est décrite ci-dessus, il est avantageux qu'au moins le récipient 1 , la paroi de séparation 5, la tubulure 14 et le corps cylindrique 30 soient réalisés en matière plastique, notamment par moulage, ce qui ne peut que contribuer à réduire considérablement le prix de fabrication de ce dispositif selon l'invention.If the device has a structure like that described above, it is advantageous that at least the container 1, the partition wall 5, the tube 14 and the cylindrical body 30 are made of plastic, in particular by molding, which can only help to considerably reduce the manufacturing price of this device according to the invention.
Le dispositif décrit ci-dessus fonctionne et s'utilise de la façon suivante:The device described above works and is used in the following way:
Il est tout d'abord supposé que ce dispositif est utilisé dans un milieu où régnent une atmosphère sous pression et une force de gravitation, par exemple sur la Terre, que le récipient 1 est initialement complètement vide de tout liquide et que l'on se propose de l'utiliser pour vidanger l'huile contenue dans le bloc-moteur non représenté d'un véhicule automobile ou analogue.It is first assumed that this device is used in an environment where there is a pressurized atmosphere and a gravitational force, for example on Earth, that the container 1 is initially completely empty of any liquid and that one proposes to use it to drain the oil contained in the not shown engine block of a motor vehicle or the like.
L'extrémité 18 de la tubulure 14 est introduite dans le bloc-moteur de façon que sa bouche d'entrée 15 plonge dans l'huile, de préférence jusqu'au fond du bloc-moteur.The end 18 of the pipe 14 is introduced into the engine block so that its inlet mouth 15 plunges into the oil, preferably to the bottom of the engine block.
La tige de commande 36 est ensuite animée d'un mouvement de va et vient selon les flèches 61 et 62 de façon que le piston 35 parcoure l'intérieur 32 du corps cylindrique 30. Quand la tige s'enfonce selon la flèche 61 , la valve 38 est passante et le piston 35 s'enfonce sans déplacement notable de l'atmosphère qui se trouve dans le corps cylindrique.The control rod 36 is then moved back and forth according to the arrows 61 and 62 so that the piston 35 traverses the interior 32 of the cylindrical body 30. When the rod sinks according to arrow 61, the valve 38 is on and the piston 35 sinks without appreciable displacement of the atmosphere which is in the cylindrical body.
A l'inverse, quand la tige de commande 36 est relevée selon la flèche 62, la valve 38 se ferme et crée une dépression entre le piston 35 et l'entrée d'aspiration 1 1 . L'atmosphère que se trouve dans le corps cylindrique 30 au- dessus du piston s'évacue par la sortie de refoulement 12 constituée, dans le mode de réalisation illustré, par l'ouverture 31. L'atmosphère qui se trouve dans le second volume secondaire 7 est aspirée pour pénétrer dans le premier volume secondaire 6 en ouvrant le clapet 55. la dépression qui se produit dans le second volume secondaire 7 permet d'aspirer l'huile contenue dans le bloc moteur du fait de la différence de pression qui se produit entre l'atmosphère extérieure au récipient 1 et qui s'exerce sur l'huile à vidanger et celle qui règne dans le second volume secondaire 7.Conversely, when the control rod 36 is raised according to arrow 62, the valve 38 closes and creates a vacuum between the piston 35 and the suction inlet 11. The atmosphere which is in the cylindrical body 30 above the piston is evacuated by the discharge outlet 12 constituted, in the illustrated embodiment, by the opening 31. The atmosphere which is in the second volume secondary 7 is sucked to enter the first secondary volume 6 by opening the valve 55. the depression which occurs in the second secondary volume 7 makes it possible to suck up the oil contained in the engine block due to the pressure difference which product between the atmosphere outside the container 1 and which acts on the oil to be drained and that which reigns in the second secondary volume 7.
Pour aspirer toute l'huile contenue dans le bloc-moteur et la vidanger dans le bas 4 du récipient 1, il suffit d'exercer des mouvements de va et vient successifs sur la tige de commande 36. Du fait de la structure du dispositif telle que décrite ci-avant, même si, malencontreusement, celui-ci venait à être penché, l'étranglement 23 crée un obstacle à l'écoulement de l'huile, ce qui l'empêche de pénétrer dans le premier volume auxiliaire 21 et donc d'atteindre le niveau de l'orifice 8. Il est cependant à noter que, même si de l'huile pénètre dans ce premier volume auxiliaire pendant la non-utilisation du dispositif, le plot d'obturation 57 empêche l'huile de s'écouler dans le premier volume secondaire 6.To suck up all the oil contained in the engine block and drain it in the bottom 4 of the container 1, it suffices to exert successive back and forth movements on the control rod 36. Due to the structure of the device such as described above, even if, unfortunately, it were to be tilted, the constriction 23 creates an obstacle to the flow of the oil, which prevents it from entering the first auxiliary volume 21 and therefore to reach the level of the orifice 8. It should however be noted that, even if oil enters this first auxiliary volume during the non-use of the device, the shutter pad 57 prevents the oil from s '' in the first secondary volume 6.
Dans l'exemple de structure décrit ci-dessus, la sortie de refoulement 12 de la pompe est confondue avec l'ouverture 31. Aussi, pour que l'atmosphère qui est extraite du récipient lorsque la tige de commande 36 est tirée selon la flèche 62, puisse sortir à l'extérieur 13 du récipient, la section de l'ouverture 31 est réalisée de façon qu'elle soit supérieure à la section transversale de la tige de commande 36 pour qu'il existe un espace suffisant entre cette tige de commande et le bord de l'ouverture, comme représenté sur la figure.In the example of structure described above, the discharge outlet 12 of the pump is coincident with the opening 31. Also, so that the atmosphere which is extracted from the container when the control rod 36 is pulled along the arrow 62, can exit outside the container 13, the section of the opening 31 is made so that it is greater than the cross section of the control rod 36 so that there is sufficient space between this rod control and the edge of the opening, as shown in the figure.
Cependant, il est bien évident que l'ouverture 31 pourrait constituer un passage étanche pour la tige de commande 36. Dans ce cas, la sortie de refoulement 12 serait réalisée séparément par une percée traversant la paroi 19 du récipient. Cette réalisation serait utilisée s'il était nécessaire que la tige de commande 36 soit parfaitement maintenue latéralement lors de sa translation. En outre, par sécurité, la paroi 19 du récipient 1 peut par exemple comporter, comme de façon connue, une fenêtre en un matériau transparent pour que les utilisateurs puissent vérifier le niveau du fluide contenu dans ce récipient 1 , de façon à ne pas dépasser un niveau déterminé qui est préférentiellement défini en dessous du niveau de l'étranglement 23. La figure 2 représente un deuxième mode de réalisation d'un dispositif selon l'invention dont les caractéristiques principales sont définies ci-avant, notamment en regard de la figure 1.However, it is obvious that the opening 31 could constitute a sealed passage for the control rod 36. In this case, the discharge outlet 12 would be produced separately by a breakthrough passing through the wall 19 of the container. This embodiment would be used if it were necessary for the control rod 36 to be perfectly held laterally during its translation. In addition, for safety, the wall 19 of the container 1 may for example comprise, as in known manner, a window made of a transparent material so that the users can check the level of the fluid contained in this container 1, so as not to exceed a determined level which is preferably defined below the level of the throttle 23. FIG. 2 represents a second embodiment of a device according to the invention, the main characteristics of which are defined above, in particular with regard to the figure 1.
Dans ce deuxième mode de réalisation, le dispositif comporte, comme dans le premier mode de réalisation, une pompe 10 montée en coopération avec le récipient 1 dont une partie seulement a été représentée, de façon que son entrée d'aspiration 1 1 soit située dans le premier volume secondaire 6 et que sa sortie de refoulement 12 débouche à l'extérieur 13 du récipient. Selon ce second mode de réalisation, la pompe 10 comporte un corps de pompe constitué par la paroi de séparation 5 définie ci-avant dans la description du premier mode réalisation, un piston 70 monté coulissant dans le corps de pompe 5 pour délimiter, dans le premier volume secondaire 6, deux première 71 et seconde 72 chambres, l'orifice 8 débouchant dans la première chambre 71 par l'intermédiaire du clapet 55, comme dans le premier mode de réalisation selon la figure 1.In this second embodiment, the device comprises, as in the first embodiment, a pump 10 mounted in cooperation with the container 1 of which only a part has been shown, so that its suction inlet 11 is located in the first secondary volume 6 and that its delivery outlet 12 opens to the outside 13 of the container. According to this second embodiment, the pump 10 comprises a pump body constituted by the partition wall 5 defined above in the description of the first embodiment, a piston 70 mounted to slide in the pump body 5 to delimit, in the first secondary volume 6, two first 71 and second 72 chambers, the orifice 8 opening into the first chamber 71 via the valve 55, as in the first embodiment according to FIG. 1.
En outre, le piston 70 est conformé en second clapet de façon que ce dernier clapet soit "passant" quand le piston 70 se déplace dans le corps de pompe lorsque que le volume de la première chambre 71 diminue et celui de la seconde chambre 72 augmente, et "obturant" quand ce piston se déplace de façon que le volume de la première chambre augmente et celui de la première chambre diminue.In addition, the piston 70 is shaped as a second valve so that the latter valve is "on" when the piston 70 moves in the pump body when the volume of the first chamber 71 decreases and that of the second chamber 72 increases. , and "closing" when this piston moves so that the volume of the first chamber increases and that of the first chamber decreases.
La pompe 10 comporte aussi une tige de commande 73 de la translation du piston 70 dans le corps de pompe 5, une extrémité 74 de cette tige de commande étant située à l'extérieur 13 du récipient 1 en traversant par un passage étanche coulissant 75 la paroi 76 du récipient 1 séparant la première chambre 71 et l'extérieur 13, des moyens 77 pour mettre en communication la seconde chambre 72 avec l'extérieur 13 du récipient 1, et des moyens de valve 78 présentant un sens "passant" uniquement dans le sens de la seconde chambre 72 vers l'extérieur 13 du récipient.The pump 10 also comprises a control rod 73 for the translation of the piston 70 in the pump body 5, one end 74 of this control rod being located outside 13 of the container 1, passing through a sliding sealed passage 75 la wall 76 of the container 1 separating the first chamber 71 and the exterior 13, means 77 for communicating the second chamber 72 with the exterior 13 of the container 1, and valve means 78 having a "passing" direction only in the direction of the second chamber 72 towards the outside 13 of the container.
Sur la figure 2, le passage étanche coulissant 75 est représenté schématiquement par une percée entourée d'un soufflet d'étanchéité reliant le bord de cette percée et le piston 70, mais il est bien évident que ce passage étanche peut être constitué par d'autres moyens, par exemple par un joint torique d'étanchéité ou analogue.In FIG. 2, the sliding sealed passage 75 is represented diagrammatically by a breakthrough surrounded by a sealing bellows connecting the edge of this breakthrough and the piston 70, but it is quite obvious that this sealed passage can be constituted by other means, for example by an O-ring seal or the like.
Dans un mode de réalisation particulièrement avantageux, notamment en vue de l'industrialisation et du montage du dispositif, les moyens 77 pour mettre en communication la seconde chambre 72 avec l'extérieur 1 3 du récipient sont constitués par une conduite 79 traversant le piston 70 et au moins partiellement la tige de commande 73 de façon que ses deux extrémités 80, 81 débouchent constamment respectivement dans la seconde chambre 72 et à l'extérieur 13 du récipient. Dans ce cas, les moyens de valve 78 sont montés en coopération avec cette conduite 79 par exemple à son extrémité 81. Des moyens de valve 78 comme ceux définis ci-dessus sont bien connus en eux- mêmc et ne seront pas décrits spécifiquement ici, dans l'unique souci de simplifier la présente description. De même, dans une réalisation possible et avantageuse, le piston 70 conformé en second clapet comprend par exemple un corps de piston 82 d'une section extérieure inférieure à la section du premier volume secondaire 6, une rainure circulaire 83 réalisée dans ce corps de piston, un joint annulaire 84 disposé dans la rainure circulaire, la section annulaire extérieure du joint 84 étant égale à la section intérieure du premier volume secondaire 6 et sa section annulaire intérieure étant égale à la section du fond 85 de la rainure 83, la largeur de la rainure étant supérieure à l'épaisseur du joint annulaire, et des moyens 86 pour mettre en communication la rainure circulaire 83 avec la seconde chambre 72.In a particularly advantageous embodiment, in particular with a view to industrialization and assembly of the device, the means 77 for putting the second chamber 72 into communication with the outside 1 3 of the container are constituted by a pipe 79 passing through the piston 70 and at least partially the control rod 73 so that its two ends 80, 81 constantly open respectively into the second chamber 72 and outside 13 of the container. In this case, the valve means 78 are mounted in cooperation with this pipe 79, for example at its end 81. Valve means 78 like those defined above are well known in themselves and will not be described specifically here, for the sole purpose of simplifying the present description. Likewise, in a possible and advantageous embodiment, the piston 70 shaped as a second valve comprises for example a piston body 82 of an outer section smaller than the section of the first secondary volume 6, a circular groove 83 produced in this piston body , an annular seal 84 disposed in the circular groove, the outer annular section of the seal 84 being equal to the inner section of the first secondary volume 6 and its inner annular section being equal to the bottom section 85 of the groove 83, the width of the groove being greater than the thickness of the annular seal, and means 86 for bringing the circular groove 83 into communication with the second chamber 72.
Le fonctionnement de ce mode de réalisation selon la figure 2 est identique, dans sa fonction générale, à celui du mode de réalisation selon la figure 1 décrit ci-avant. La seule différence consiste dans le fonctionnement de la pompe 10, mais le résultat obtenu est identique à celui obtenu avec le premier mode de réalisation.The operation of this embodiment according to FIG. 2 is identical, in its general function, to that of the embodiment according to FIG. 1 described above. The only difference consists in the operation of the pump 10, but the result obtained is identical to that obtained with the first embodiment.
En effet, avec un dispositif selon ce second mode de réalisation, pour aspirer le fluide après avoir plongé l'extrémité 18 de la tubulure 14 dans le conteneur à vidanger, on commence par soulever la tige 73. Le piston 70 monte dans le corps de pompe 5 et réduit de cette façon le volume de la chambre 71. Comme ce piston est conformé en clapet "passant" lorsqu'il monte dans le corps de pompe 5, il laisse passer l'air qui se trouve dans cette chambre 71 pour qu'il vienne remplir corrélativement le volume de la chambre 72, le clapet 55 associé à l'orifice 8 interdisant le passage de l'air du premier volume secondaire 6 vers le second 7. Lors du mouvement ascendant de la tige 73 et du piston 70, la valve 78 interdit aussi toute entrée d'air de l'extérieur 13 vers la seconde chambre 72.Indeed, with a device according to this second embodiment, to aspirate the fluid after having immersed the end 18 of the tubing 14 in the container to be drained, one begins by lifting the rod 73. The piston 70 rises in the body of pump 5 and in this way reduces the volume of the chamber 71. As this piston is shaped as a "passing" valve when it rises in the pump body 5, it lets the air which is in this chamber 71 pass so that 'it comes to correspondingly fill the volume of the chamber 72, the valve 55 associated with the orifice 8 preventing the passage of air from the first secondary volume 6 to the second 7. During the upward movement of the rod 73 and the piston 70 , the valve 78 also prohibits any entry of air from the outside 13 to the second chamber 72.
Quand la tige 73 est arrivée au sommet du premier volume secondaire 6, elle est abaissée, et avec elle, le piston 70 qui réduit le volume de la seconde chambre 72. Le piston 70 étant conformé en clapet "obturant" lorsqu'il se déplace dans le sens d'une réduction du volume de la seconde chambre, il permet de comprimer l'air se trouvant dans cette chambre 72 et de l'expulser, via la conduite 79 et la valve 78, vers l'extérieur 13 du récipient 1.When the rod 73 has arrived at the top of the first secondary volume 6, it is lowered, and with it, the piston 70 which reduces the volume of the second chamber 72. The piston 70 being shaped as a "shutter" valve when it moves in the direction of reducing the volume of the second chamber, it makes it possible to compress the air located in this chamber 72 and to expel it, via the pipe 79 and the valve 78, towards the outside 13 of the container 1 .
Ainsi, par des mouvements alternatifs de montée et de descente de la tige 73 et donc du piston 70, il est possible d'aspirer une grande partie de l'air contenu dans le volume secondaire 7 du récipient 1 et d'y créer une dépression qui permet, par la tubulure 14, d'aspirer le fluide du conteneur à vidanger et de remplir progressivement ce volume 7. Le piston 70 conformé en second clapet comme illustré sur la figure 2 fonctionne de la façon suivante :Thus, by alternative movements of raising and lowering of the rod 73 and therefore of the piston 70, it is possible to suck up a large part of the air contained in the secondary volume 7 of the container 1 and to create a depression therein. which allows, via the tubing 14, to suck the fluid from the container to be drained and to gradually fill this volume 7. The piston 70 shaped as a second valve as illustrated in FIG. 2 operates as follows:
Quand la tige 73 est soulevée, le joint 84 vient buter contre la partie basse de la rainure 83 et l'air contenu dans la chambre 71 peut donc s'écouler entre cette chambre 71 et la chambre 72 en passant dans l'espace 90 compris entre le corps de piston 82 et le corps de pompe 5, puis par les moyens 86 de mise en communication de la rainure circulaire 83 avec la seconde chambre.When the rod 73 is raised, the seal 84 abuts against the lower part of the groove 83 and the air contained in the chamber 71 can therefore flow between this chamber 71 and the chamber 72 passing through the space 90 included between the piston body 82 and the pump body 5, then by the means 86 for placing the circular groove 83 in communication with the second chamber.
Quand la tige 73 est abaissée, le joint 84 vient se plaquer contre la partie haute de la rainure 83 et épouse la paroi intérieure du corps de pompe 5. Dans cette configuration, l'espace 90 est obturé et ne permet pas une communication fluidique entre la seconde chambre 72 et la première 71 via les moyens de communication 86. Le piston conformé en clapet est dans le sens "obturant" défini ci-avant. Cette configuration est celle illustrée sur la figure 2. When the rod 73 is lowered, the seal 84 is pressed against the upper part of the groove 83 and marries the inner wall of the pump body 5. In this configuration, the space 90 is closed and does not allow fluid communication between the second chamber 72 and the first 71 via the communication means 86. The piston shaped as a valve is in the "closing" direction defined above. This configuration is that illustrated in FIG. 2.

Claims

R E V E N D I C A T I O N SR E V E N D I C A T I O N S
1- Dispositif permettant, dans un milieu où régnent une atmosphère sous pression et une force de gravitation, de vidanger un conteneur de fluide visqueux, comportant :1- Device allowing, in an environment where a pressurized atmosphere and a gravitational force prevail, to empty a container of viscous fluid, comprising:
- un récipient ( 1 ) définissant un volume principal (2) apte à contenir ledit fluide visqueux, ledit récipient étant conformé pour être apte à être placé dans ledit milieu de façon que le volume principal comporte une partie haute (3) et partie basse (4),- a container (1) defining a main volume (2) capable of containing said viscous fluid, said container being shaped to be able to be placed in said medium so that the main volume comprises an upper part (3) and lower part ( 4),
- une pompe (10) comportant une entrée d'aspiration ( 1 1) et une sortie de refoulement (12),- a pump (10) comprising a suction inlet (1 1) and a discharge outlet (12),
- une tubulure ( 14) comportant une bouche d'entrée ( 15) et une bouche de sortie ( 16), - des moyens ( 17) pour monter la tubulure ( 14) en association avec le récipient ( 1) de façon que ses bouches d'entrée ( 15) et de sortie ( 16) soit respectivement situées à l'extérieur et à l'intérieur du récipient ( 1 ), l'extrémité (18) de la tubulure ( 14) comportant la bouche d'entrée ( 15) étant conformée pour être apte à plonger dans le conteneur à vidanger, caractérisé par le fait qu'il comporte en outre une paroi de séparation (5) pour délimiter, dans le volume principal (2), deux premier et second volumes secondaires (6, 7), le premier volume secondaire (6) englobant au moins une portion (9) de la partie haute (3) du volume principal 2, et un orifice (8) réalisé dans la paroi de séparation (5) pour mettre en communication les deux premier et second volumes secondaires (6, 7), ledit orifice débouchant dans le second volume secondaire (7) dans ladite portion (9) de la partie haute (3) du volume principal (2), par le fait que ladite pompe ( 10) est montée e n coopération avec le récipient ( 1 ) de façon que son entrée d'aspiration ( 1 1 ) soit située dans le premier volume secondaire (6) et que sa sortie de refoulement (12) débouche à l'extérieur ( 13) du récipient ( 1 ), et que la bouche de sortie ( 16) de la tubulure ( 14) est située dans le second volume secondaire (7).- a tubing (14) comprising an inlet mouth (15) and an outlet mouth (16), - means (17) for mounting the tubing (14) in association with the container (1) so that its mouths inlet (15) and outlet (16) is respectively located outside and inside the container (1), the end (18) of the tubing (14) comprising the inlet mouth (15 ) being shaped to be able to immerse in the container to be emptied, characterized in that it also comprises a partition wall (5) to delimit, in the main volume (2), two first and second secondary volumes (6 , 7), the first secondary volume (6) including at least a portion (9) of the upper part (3) of the main volume 2, and an orifice (8) formed in the partition wall (5) to put in communication the two first and second secondary volumes (6, 7), said orifice opening into the second secondary volume (7) in said portion (9) of the upper part (3) of the main volume (2), in that said pump (10) is mounted in cooperation with the container (1) so that its suction inlet (1 1) is located in the first secondary volume (6) and that its delivery outlet (12) opens to the outside (13) of the container (1), and that the outlet mouth (16) of the tubing (14) is located in the second secondary volume (7).
2- Dispositif selon la revendication 1 , caractérisé par le fait que le second volume secondaire (7) est divisé en deux premier et second volumes auxiliaires (21, 22), ces deux volumes auxiliaires étant en communication par un étranglement (23) formé entre la paroi (19) du récipient ( 1 ) et la paroi de séparation (5), ledit étranglement constituant une perte de charge importante pour le fluide visqueux, le premier volume auxiliaire (21 ) étant situé en partie haute (3) du volume principal (2), l'orifice (8) débouchant dans ce premier volume auxiliaire (21).2- Device according to claim 1, characterized in that the second secondary volume (7) is divided into two first and second auxiliary volumes (21, 22), these two auxiliary volumes being in communication by a throttle (23) formed between the wall (19) of the container (1) and the partition wall (5), said constriction constituting a significant pressure drop for the viscous fluid, the first auxiliary volume (21) being located in part high (3) of the main volume (2), the orifice (8) opening into this first auxiliary volume (21).
3- Dispositif selon l'une des revendications 1 et 2, caractérisé par le fait que l'extrémité (18) de la tubulure comportant la bouche d'entrée est souple. 4- Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait qu'il comporte un premier clapet (55) monté en coopération avec l'orifice (8) de façon que cedit premier clapet soit "passant" dans le sens du second volume secondaire (7) vers le premier volume secondaire (6).3- Device according to one of claims 1 and 2, characterized in that the end (18) of the tube comprising the inlet mouth is flexible. 4- Device according to one of claims 1 to 3, characterized in that it comprises a first valve (55) mounted in cooperation with the orifice (8) so that said first valve is "passing" in the direction from the second secondary volume (7) to the first secondary volume (6).
5- Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que la pompe ( 10) comporte un corps cylindrique (30), une première extrémité5- Device according to one of claims 1 to 4, characterized in that the pump (10) has a cylindrical body (30), a first end
(33) du corps cylindrique étant solidaire de façon étanche de la paroi ( 19) du récipient ( 1 ), ce récipient comportant une ouverture (3 1 ) pour mettre en communication l'intérieur (32) du corps cylindrique (30) et l'extérieur ( 13) du récipient, le corps cylindrique (30) débouchant à son autre extrémité (34) dans le premier volume secondaire (6) ; un premier piston (35) monté coulissant dans le corps cylindrique (30) ; une première tige de commande (36) de la translation du premier piston, une extrémité (37) de la première tige de commande étant située à l'extérieur ( 13) du récipient (1 ) en passant sans étanchéité par l'ouverture (31) ; et une valve (38) montée en coopération avec le premier piston (35), la valve étant "passante" lorsque la première tige de commande (36) pénètre par translation dans le corps cylindrique (30) et "fermée" lorsque la première tige de commande sort du corps cylindrique.(33) of the cylindrical body being tightly secured to the wall (19) of the container (1), this container having an opening (3 1) for placing the interior (32) of the cylindrical body (30) in communication with the outside (13) of the container, the cylindrical body (30) opening at its other end (34) in the first secondary volume (6); a first piston (35) slidably mounted in the cylindrical body (30); a first control rod (36) for the translation of the first piston, one end (37) of the first control rod being located outside (13) of the container (1) passing without sealing through the opening (31 ); and a valve (38) mounted in cooperation with the first piston (35), the valve being "on" when the first control rod (36) enters in translation in the cylindrical body (30) and "closed" when the first rod out of the cylindrical body.
6- Dispositif selon la revendication 5, caractérisé par le fait que la paroi de séparation (5) est constituée par un manchon cylindrique (40) d'une longueur supérieure à celle du corps cylindrique (30), le manchon étant monté solidaire, en une (41 ) de ses extrémités (41, 42), de la paroi ( 19) du récipient de façon qu'il soit sensiblement concentrique au corps cylindrique (30) en délimitant, entre sa face intérieure (45) et la face extérieure du corps cylindrique, un premier espace annulaire (43), et par un bouchon (44) pour fermer de façon étanche l'autre extrémité (42) du manchon.6- Device according to claim 5, characterized in that the partition wall (5) is constituted by a cylindrical sleeve (40) of a length greater than that of the cylindrical body (30), the sleeve being mounted integral, in one (41) of its ends (41, 42), of the wall (19) of the container so that it is substantially concentric with the cylindrical body (30) delimiting, between its internal face (45) and the external face of the cylindrical body, a first annular space (43), and by a plug (44) for sealing the other end (42) of the sleeve.
7- Dispositif selon la revendication 6, caractérisé par le fait que le premier volume auxiliaire (21 ) forme un second espace annulaire cylindrique (50) autour du manchon (40), ce second espace annulaire étant d'une longueur inférieure à la longueur du manchon. 8- Dispositif selon la revendication 4, caractérisé par le fait que, ladite pompe ( 10) étant montée en coopération avec le récipient ( 1 ) de façon que son entrée d'aspiration ( 11 ) soit située dans le premier \ olume secondaire (6) et que sa sortie de refoulement ( 12) débouche à l'extérieur ( 13) du récipient ( 1 ), elle comporte un corps de pompe, cedit corps de pompe étant constitué par la paroi de séparation (5), un second piston (70) monté coulissant dans ledit corps de pompe pour délimiter, dans ledit premier volume secondaire (6), deux première et seconde chambres (71 , 72), ledit orifice (8) débouchant dans la première chambre (71 ), ledit second piston (70) étant conformé en second clapet de façon que ce second clapet soit "passant" quand le piston se déplace dans le corps de pompe de façon que le volume de la première chambre diminue et celui de la seconde chambre augmente, et "obturant" quand le piston se déplace de façon que le volume de la première chambre augmente et celui de la première chambre diminue, une seconde tige de commande (73) de la translation dudit second piston dans ledit corps de pompe, une extrémité (74) de ladite seconde tige de commande étant située à l'extérieur ( 1 3) du récipient ( 1) en traversant par un passage étanche coulissant (75) la paroi (76) du récipient séparant la première chambre (71 ) et l'extérieur ( 13), des moyens (77) pour mettre en communication la seconde chambre (72) avec l'extérieur ( 13 ) dudit récipient ( 1 ), et des moyens de valve (78) présentant un sens "passant" uniquement dans le sens de la seconde chambre (72) vers l'extérieur ( 13) dudit récipient. 9- Dispositif selon la revendication 8, caractérisé par le fait que les moyens (77) pour mettre en communication la seconde chambre (72) avec l'extérieur ( 13 ) dudit récipient sont constitués par une conduite (79) traversant ledit second piston (70) et au moins partiellement ladite seconde tige de commande (73) de façon que ses deux extrémités ( 80, 81 ) débouchent constamment respectivement dans la seconde chambre (72) et à l'extérieur ( 13) dudit récipient, lesdits moyens de valve (78) étant montés en coopération avec cettedite conduite (79).7- Device according to claim 6, characterized in that the first auxiliary volume (21) forms a second cylindrical annular space (50) around the sleeve (40), this second annular space being of a length less than the length of the muff. 8- Device according to claim 4, characterized in that, said pump (10) being mounted in cooperation with the container (1) so that its suction inlet (11) is located in the first secondary olume (6 ) and that its delivery outlet (12) opens to the outside (13) of the container (1), it comprises a pump body, said pump body being constituted by the partition wall (5), a second piston (70) slidably mounted in said pump body to delimit, in said first secondary volume (6), two first and second chambers (71, 72), said orifice (8) opening into the first chamber (71), said second piston (70) being shaped as a second valve so that this second valve is "on" when the piston moves in the pump body so that the volume of the first chamber decreases and that of the second chamber increases, and "obturates" when the piston moves so that the volume of the first chamber increases and that of the first chamber decreases, a second control rod (73) for the translation of said second piston in said pump body, one end (74) of said second rod command being located outside laughing (1 3) of the container (1) crossing through a sliding leaktight passage (75) the wall (76) of the container separating the first chamber (71) and the outside (13), means (77) for setting communicating the second chamber (72) with the outside (13) of said container (1), and valve means (78) having a "passing" direction only in the direction of the second chamber (72) towards the outside ( 13) of said container. 9- Device according to claim 8, characterized in that the means (77) for communicating the second chamber (72) with the outside (13) of said container are constituted by a line (79) passing through said second piston ( 70) and at least partially said second control rod (73) so that its two ends (80, 81) constantly open respectively into the second chamber (72) and outside (13) of said container, said valve means (78) being mounted in cooperation with this pipe (79).
10- Dispositif selon l'une des revendications 8 et 9, caractérisé par le fait que ledit second piston (70) conformé en second clapet comprend un corps de piston ( 82) d'une section extérieure inférieure à la section dudit premier volume secondaire (6), une rainure circulaire (83) réalisée dans ledit corps de piston, un joint annulaire (84) disposé dans ladite rainure circulaire, la section annulaire extérieure du joint étant égale à la section intérieure du premier volume secondaire (6), la section annulaire intérieure dudit joint étant égale à la section du fond de la rainure, la largeur de ladite rainure étant supérieure à l'épaisseur dudit joint annulaire, et des moyens ( 86) pour mettre en communication la rainure circulaire avec la seconde chambre (72). 10- Device according to one of claims 8 and 9, characterized in that said second piston (70) shaped as a second valve comprises a piston body (82) of an outer section smaller than the section of said first secondary volume ( 6), a circular groove (83) produced in said piston body, an annular seal (84) disposed in said circular groove, the outer annular section of the seal being equal to the interior section of the first secondary volume (6), the section inner annular of said seal being equal to the section of the bottom of the groove, the width of said groove being greater than the thickness of said annular seal, and means (86) for placing the circular groove in communication with the second chamber (72) .
EP99972286A 1998-11-16 1999-11-12 Device for emptying a container of viscous fluid Expired - Lifetime EP1131543B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9814295 1998-11-16
FR9814295A FR2785894B1 (en) 1998-11-16 1998-11-16 DEVICE FOR DRAINING A VISCOUS FLUID CONTAINER
PCT/FR1999/002775 WO2000029725A1 (en) 1998-11-16 1999-11-12 Device for emptying a container of viscous fluid

Publications (2)

Publication Number Publication Date
EP1131543A1 true EP1131543A1 (en) 2001-09-12
EP1131543B1 EP1131543B1 (en) 2003-06-04

Family

ID=9532711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99972286A Expired - Lifetime EP1131543B1 (en) 1998-11-16 1999-11-12 Device for emptying a container of viscous fluid

Country Status (7)

Country Link
US (1) US6390149B1 (en)
EP (1) EP1131543B1 (en)
AT (1) ATE242422T1 (en)
AU (1) AU1167000A (en)
DE (1) DE69908634T2 (en)
FR (1) FR2785894B1 (en)
WO (1) WO2000029725A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW515503U (en) * 2002-04-04 2002-12-21 Ming-Jang Chen Drawing and sub-packaging device for liquid
ES2564754T3 (en) * 2013-03-01 2016-03-28 Roman Taniel Method and device for the operation of a diesel engine with emulsion fuels of variable composition

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1439295A (en) * 1921-05-13 1922-12-19 Craig Hugh Pump
CH386769A (en) * 1961-05-19 1965-01-15 Meier Ernst Device for sucking engine oil from the oil pan of motor vehicle engines
AU620511B2 (en) 1990-04-30 1992-02-20 Tseng, Tien-Tsai A portable oil suction device
DE4445623C1 (en) * 1994-12-21 1996-03-14 Leopold Knestele Hand tool for sucking out waste oil from vehicles
US5450924A (en) * 1995-01-05 1995-09-19 Tseng; Tien-Tsai Portable oil suction device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0029725A1 *

Also Published As

Publication number Publication date
EP1131543B1 (en) 2003-06-04
DE69908634D1 (en) 2003-07-10
FR2785894B1 (en) 2000-12-15
WO2000029725A1 (en) 2000-05-25
US6390149B1 (en) 2002-05-21
FR2785894A1 (en) 2000-05-19
DE69908634T2 (en) 2004-04-29
AU1167000A (en) 2000-06-05
ATE242422T1 (en) 2003-06-15

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