EP3436701A1 - Modular pump housing - Google Patents

Modular pump housing

Info

Publication number
EP3436701A1
EP3436701A1 EP17717787.0A EP17717787A EP3436701A1 EP 3436701 A1 EP3436701 A1 EP 3436701A1 EP 17717787 A EP17717787 A EP 17717787A EP 3436701 A1 EP3436701 A1 EP 3436701A1
Authority
EP
European Patent Office
Prior art keywords
pump body
chamber
pump
face
interface
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
EP17717787.0A
Other languages
German (de)
French (fr)
Other versions
EP3436701B1 (en
Inventor
Khaled Abou-Saleh
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.)
Tecan Trading AG
Original Assignee
Tecan Trading AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tecan Trading AG filed Critical Tecan Trading AG
Publication of EP3436701A1 publication Critical patent/EP3436701A1/en
Application granted granted Critical
Publication of EP3436701B1 publication Critical patent/EP3436701B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/007—Cylinder heads
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly

Definitions

  • the present invention relates to the field of piston pumps used in automatic sampling, including syringe type pumps used for taking a blood sample for analysis by an automatic device.
  • Patent FR 2 974 155 describes such pumps.
  • the object of the invention is to propose means for manufacturing reliable pumps at low cost.
  • the invention proposes a pump body characterized in that it comprises:
  • a substantially cylindrical pumping chamber around a pumping axis comprising an opening for axially introducing a piston and a bottom axially opposite to the opening; a connecting face, preferably substantially flat, preferably parallel to the axis;
  • the means for fixing the interface may be free of tapping, and preferably, are smooth bores.
  • the pump body comprises a base and means for fixing said base on a frame.
  • the fixing means of the base may be free of tapping, and preferably are smooth bores.
  • the body may further comprise a lateral duct connecting a side wall of the chamber with the connecting face.
  • the invention also relates to a family of pump bodies according to the invention, characterized in that it comprises a plurality of pump bodies having identical external dimensions, each pump body having a specific chamber diameter.
  • the invention also relates to a pumping assembly characterized in that it comprises a pump body according to the invention and a fluid interface fixed on the connection face of the body.
  • a pump assembly may comprise a pump body having a lateral duct connecting a side wall of the chamber with the connection face, a fluidic interface and a solenoid valve fluidly connected to the connection face via the interface.
  • the invention also relates to a pump comprising a pump assembly according to the invention.
  • the invention also relates to a method for manufacturing a pump body from a family according to the invention, characterized in that:
  • a chamber core corresponding to a desired chamber diameter is chosen.
  • Figure 1 is a perspective view of an assembly comprising a pump body according to a first embodiment of the invention and a solenoid valve fixed on the pump body;
  • Figure 2 is an elevational view and front view of the pump body of Figure 1;
  • Figure 3 is a longitudinal section, in elevation, along the plane III-III of Figure 2, the assembly of Figure 1;
  • Figure 4 is a view similar to that of Figure 3, wherein the pump body comprises a chamber of a diameter smaller than that of the chamber of Figure 4;
  • Figure 5 is a perspective view of a pump body according to a second embodiment of the invention, without solenoid valve;
  • Figure 6 is a view similar to the perspective view of Figure 5, in which the body is further shown cut longitudinally along the plane VI-VI of Figure 7;
  • Figure 7 is a front view and in elevation of the pump body of Figure 5;
  • Figure 8 shows four sections according to VI-VI, each of a pump body with a respective chamber diameter
  • FIG. 9 illustrates a pump equipped with a body according to the invention.
  • the terms vertical and front in particular, are assigned arbitrarily, depending on the layout of the main figures. These terms are not limiting, and the elements described may have a different layout when implemented on a device.
  • FIGS. 1 to 4 illustrate a pump body 10 intended to be mounted with a solenoid valve 11 on a pump 100.
  • an interface piece 12 provides a fluid connection between the body 10 and the valve 11.
  • interface piece can be an independent piece, it can be an integral part of solenoid valve 11.
  • the body 10 is in a substantially cylindrical shape, of diameter D10, around a vertical axis XI 0.
  • This cylindrical shape is truncated in an upper portion 14 by two flats forming two opposing faces 15, 16, planar, vertical and parallel to each other.
  • the X10 axis is equidistant from both sides 15,16.
  • the body Under the upper part 14, the body comprises a substantially cylindrical base 17 around the axis X10.
  • the upper portion 14 extends vertically upwardly from the base 17.
  • the thickness E17 of the base is small relative to the total height H10 of the body and to the diameter D10 of the body.
  • the base comprises, on either side of the upper part, bores 18 through vertically the base. As illustrated in FIG. 9, these bores 18 are designed to fix and position the body 10 on a central part 40 of the pump 100.
  • the solenoid valve 1 via its interface 12, is fixed on a front face 15, among the opposite faces 15, 16, of the body 10, so that it extends horizontally from this front face 15
  • the interface 12 has a substantially rectangular vertical section. It comprises a front vertical face 21, against which is fixed the electro valve 11, so that the latter extends horizontally from the front face 21 of the interface 12.
  • the electro valve 11 has a substantially rectangular vertical section , substantially identical to that of the interface, so the interface and the electro valve form a set of substantially constant vertical section, in the extension of one another.
  • a counter-piece 22 is fixed against the rear face 16, among the opposite faces 15, 16, of the body 10.
  • Each bore 19, formed in the upper part 14 of the body, is arranged so that it opens on the one hand on the front face 15, vis-à-vis the interface 12, and, secondly, in the face on the rear face 16, vis-à-vis the against-piece 22.
  • Each bore 19 is further formed to fit therein a fixation rod, not shown in the figures.
  • Each rod passes through the body 10, keeping it pinched between the interface 12 and the counterpart 22, fixing them to the body. With this arrangement, it is not necessary for the body to include tapping to fix the interface 12 and / or the counterpart 22.
  • the body further comprises a pumping chamber 26, substantially cylindrical about the axis X10.
  • the chamber comprises an opening 25 in a lower face 27 of the body, so as to introduce a piston 41, shown in Figure 9.
  • the chamber extends through the base 17 into the upper part 14 of the body 10 It includes one end upper 28 of frustoconical shape, forming a bottom 28 axially opposite the opening 25.
  • the diameter of the frustoconical bottom 28 is decreasing upwards.
  • the body 10 further comprises an angled conduit 29 fluidly connecting the top of the upper end 29 of the chamber with the front face 15 of the body, and beyond, with the fluid interface 12.
  • the conduit 29 serves both intake and exhaust for a fluid in the pumping chamber 26.
  • the fluid distribution is provided by the electro valve 11.
  • the chamber 26 has a main diameter D26, measured in the portion provided for the sliding of the piston 41 and a height H26, measured between the lower face 17 of the base 17 and the base of the frustoconical end 28.
  • a width L14 of the body, between the two faces 15, 16 of its upper part 14, is provided for chambers of several diameters D26 of chambers.
  • the diameter D26 of the chamber 26 of Figure 4 is smaller than that of the chamber 26 of Figure 3.
  • the chambers 26 of FIGS. 3 and 4 also have the same height H26.
  • the diameter of the piston must be adapted to the diameter D26 of the chamber, the possible stroke of the piston in the chamber remaining substantially the same.
  • the body 10 is provided to be mounted without solenoid valve.
  • the body 10 comprises a lateral duct 30, connecting a side wall 32 of the chamber, in the cylindrical zone of main diameter D26, with the front face 15.
  • the interface 12 used in this second embodiment is adapted to extend each of the conduits 29, 30 by respective conduits 34, 35, in order to connect them to the rest of the apparatus.
  • the chamber is thus connected with the front face 15 by two ducts, one serving for the admission of fluid into the chamber, the other duct serving to exhaust the fluid.
  • the interface 12 used in this second embodiment is fixed by two screws passing through the bores 19.
  • the family comprises four pump bodies 10, adapted to operate without solenoid valve, each having a specific chamber diameter D26.
  • the body 10 of the second embodiment, illustrated in Figures 5 to 8 differs from the body according to the first embodiment, illustrated in Figures 1 to 4, only in that it comprises a second conduit 30 formed in a side wall from bedroom 26.
  • pump assemblies with or without a solenoid valve, having specific chamber volumes, but whose pump bodies 10 all have the same external dimensions D10, H10, L14.
  • To manufacture such a pump body 10 it suffices to have a single outer mold, and a first specific core adapted to form a chamber of a given diameter D26 and a core used only to make the side duct, if necessary.
  • the other cores are preferably identical regardless of the type of pump body 10.
  • the body being fixed by bores, without tapping, it can be manufactured by molding more accurately and cheaply.
  • the molding of a tapping is a complex operation; poor material filling around the mold core for tapping produces break-in primers in the injected material, which decreases the reliability of the workpiece thus manufactured, and can lead to many parts being re-bounced, which increases the cost of manufacture.
  • connection face may have a shape other than planar, provided that it can be mounted with sealing against the interface. It can be cylindrical or spherical.
  • a planar connection face may comprise a flat surface and recesses adapted to allow manufacture by molding, in particular to avoid excessive wall thicknesses.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

The invention relates to a modular pump housing 10 comprising: a pumping chamber 26, substantially cylindrical about a pumping axis and comprising an opening for the insertion of a piston and a base opposite the opening; a face suitable for attaching a fluid interface 12 thereto; and a conduit 29 connecting the base with the face. Using a process according to the invention, the diameter of the chamber can be selected during manufacture without changing the external measurements of the body. A solenoid valve 11 can be attached using the fluid interface. If a solenoid valve is not used, an additional conduit is provided through a sidewall of the chamber for connecting the latter with the fluid interface.

Description

CORPS DE POMPE MODULABLE,  MODULAR PUMP BODY,
La présente invention se rapporte au domaine des pompes à piston utilisées dans les prélèvements automatiques, notamment des pompes du type seringue utilisées pour le prélèvement d'un échantillon sanguin en vue de son analyse par un appareil automatique. Le brevet FR 2 974 155 décrit de telles pompes. The present invention relates to the field of piston pumps used in automatic sampling, including syringe type pumps used for taking a blood sample for analysis by an automatic device. Patent FR 2 974 155 describes such pumps.
Cependant, ces pompes sont particulièrement onéreuses à fabriquer, puisqu'elles doivent être fabriquées dans différentes configurations, selon le volume de pompage nécessaire et selon qu'elles sont équipées d'une électrovanne ou pas. However, these pumps are particularly expensive to manufacture, since they must be manufactured in different configurations, depending on the pumping volume required and whether they are equipped with a solenoid valve or not.
L'invention a pour but de proposer des moyens pour fabriquer des pompes fiables, à faible coût. Pour atteindre son but, l'invention propose un corps de pompe caractérisé en ce qu'il comprend : The object of the invention is to propose means for manufacturing reliable pumps at low cost. To achieve its purpose, the invention proposes a pump body characterized in that it comprises:
- une chambre de pompage sensiblement cylindrique autour d'un axe de pompage comprenant une ouverture pour y introduire axialement un piston et un fond axialement opposé à l'ouverture ; - une face de connexion, de préférence sensiblement plane, de préférence parallèle à l'axe ; a substantially cylindrical pumping chamber around a pumping axis comprising an opening for axially introducing a piston and a bottom axially opposite to the opening; a connecting face, preferably substantially flat, preferably parallel to the axis;
- un conduit coudé reliant le fond avec cette face ; et,  an angled duct connecting the bottom with this face; and,
- des moyens pour fixer une interface fluidique contre la face.  means for fixing a fluidic interface against the face.
Les moyens de fixation de l'interface peuvent être dépourvus de taraudage, et, de préférence, sont des alésages lisses. The means for fixing the interface may be free of tapping, and preferably, are smooth bores.
Avantageusement, le corps de pompe comprend une base et des moyens pour fixer ladite base sur un châssis. Les moyens de fixation de la base peuvent être dépourvus de taraudage, et, de préférence, sont des alésages lisses. Advantageously, the pump body comprises a base and means for fixing said base on a frame. The fixing means of the base may be free of tapping, and preferably are smooth bores.
Le corps peut en outre comprendre un conduit latéral reliant une paroi latérale de la chambre avec la face de connexion. The body may further comprise a lateral duct connecting a side wall of the chamber with the connecting face.
L'invention porte aussi sur une famille de corps de pompe selon l'invention, caractérisée en ce qu'elle comprend plusieurs corps de pompes ayant des dimensions extérieures identiques, chaque corps de pompe ayant un diamètre de chambre spécifique. The invention also relates to a family of pump bodies according to the invention, characterized in that it comprises a plurality of pump bodies having identical external dimensions, each pump body having a specific chamber diameter.
L'invention porte aussi sur un ensemble de pompage caractérisé en ce qu'il comprend un corps de pompe selon l'invention et une interface fluidique fixée sur la face de connexion du corps. Un tel ensemble de pompage, peut comprendre un corps de pompe ayant un conduit latéral reliant une paroi latérale de la chambre avec la face de connexion, une interface fluidique et une électrovanne fluidiquement raccordée à la face de connexion par l'interface. The invention also relates to a pumping assembly characterized in that it comprises a pump body according to the invention and a fluid interface fixed on the connection face of the body. Such a pump assembly may comprise a pump body having a lateral duct connecting a side wall of the chamber with the connection face, a fluidic interface and a solenoid valve fluidly connected to the connection face via the interface.
L'invention porte aussi sur une pompe comprenant un ensemble de pompage selon l'invention. L'invention porte encore sur un procédé pour fabriquer un corps de pompe parmi une famille selon l'invention, caractérisé en ce que : The invention also relates to a pump comprising a pump assembly according to the invention. The invention also relates to a method for manufacturing a pump body from a family according to the invention, characterized in that:
- on utilise un moule extérieur unique ;  a single external mold is used;
- on choisit un noyau de chambre correspondant à un diamètre de chambre voulu ; et,  a chamber core corresponding to a desired chamber diameter is chosen; and,
- on choisit ou pas d'utiliser un noyau pour réaliser un conduit latéral.  - We choose or not to use a core to achieve a lateral duct.
Plusieurs modes d'exécution de l'invention seront décrits ci-après, à titre d'exemples non limitatifs, en référence aux dessins annexés dans lesquels : Several embodiments of the invention will be described below, by way of non-limiting examples, with reference to the appended drawings in which:
La figure 1 est une vue en perspective d'un ensemble comprenant un corps de pompe selon un premier mode de réalisation de l'invention et une électrovanne fixée sur ce corps de pompe ; Figure 1 is a perspective view of an assembly comprising a pump body according to a first embodiment of the invention and a solenoid valve fixed on the pump body;
la figure 2 est une vue en élévation et de face, du corps de pompe de la figure 1 ;  Figure 2 is an elevational view and front view of the pump body of Figure 1;
la figure 3 est une coupe longitudinale, en élévation, selon le plan III-III de la figure 2, de l'ensemble de la figure 1 ;  Figure 3 is a longitudinal section, in elevation, along the plane III-III of Figure 2, the assembly of Figure 1;
la figure 4 est une vue similaire à celle de la figure 3, dans laquelle le corps de pompe comprend une chambre d'un diamètre inférieur à celui de la chambre de la figure 4 ;  Figure 4 is a view similar to that of Figure 3, wherein the pump body comprises a chamber of a diameter smaller than that of the chamber of Figure 4;
la figure 5 est une vue en perspective d'un corps de pompe selon un deuxième mode de réalisation de l'invention, sans électrovanne ;  Figure 5 is a perspective view of a pump body according to a second embodiment of the invention, without solenoid valve;
la figure 6 est une vue similaire à la vue en perspective de la figure 5, dans laquelle le corps est en outre représenté coupé longitudinalement, selon le plan VI- VI de la figure 7 ;  Figure 6 is a view similar to the perspective view of Figure 5, in which the body is further shown cut longitudinally along the plane VI-VI of Figure 7;
la figure 7 est une vue de face et en élévation du corps de pompe de la figure 5 ;  Figure 7 is a front view and in elevation of the pump body of Figure 5;
la figure 8 représente quatre coupes selon VI- VI, chacune d'un corps de pompe avec un diamètre de chambre respectif ; et,  Figure 8 shows four sections according to VI-VI, each of a pump body with a respective chamber diameter; and,
la figure 9 illustre une pompe équipée d'un corps selon l'invention. Dans la description, les termes vertical et avant, notamment, sont attribués arbitrairement, en fonction de la disposition des figures principales. Ces termes ne sont pas limitatifs, et les éléments décrits peuvent avoir une disposition différente lorsqu'ils sont implémentés sur un appareil. FIG. 9 illustrates a pump equipped with a body according to the invention. In the description, the terms vertical and front, in particular, are assigned arbitrarily, depending on the layout of the main figures. These terms are not limiting, and the elements described may have a different layout when implemented on a device.
Les figures 1 à 4 illustrent un corps de pompe 10 prévu pour être monté avec une électrovanne 11 sur une pompe 100. Dans l'exemple illustré, une pièce d'interface 12 assure une connexion fluidique entre le corps 10 et la vanne 11. Cette pièce d'interface peut être une pièce indépendante, elle peut être une partie intégrante de électrovanne 11. FIGS. 1 to 4 illustrate a pump body 10 intended to be mounted with a solenoid valve 11 on a pump 100. In the example illustrated, an interface piece 12 provides a fluid connection between the body 10 and the valve 11. interface piece can be an independent piece, it can be an integral part of solenoid valve 11.
Le corps 10 s'inscrit dans une forme sensiblement cylindrique, de diamètre D10, autour d'un axe vertical XI 0. Cette forme cylindrique est tronquée dans une partie supérieure 14 par deux méplats formant deux faces 15,16 opposées, planes, verticales et parallèles entre elles. L'axe X10 est équidistant des deux faces 15,16. The body 10 is in a substantially cylindrical shape, of diameter D10, around a vertical axis XI 0. This cylindrical shape is truncated in an upper portion 14 by two flats forming two opposing faces 15, 16, planar, vertical and parallel to each other. The X10 axis is equidistant from both sides 15,16.
Sous la partie supérieure 14, le corps comprend une base 17 sensiblement cylindrique autour de l'axe X10. La partie supérieure 14 s'étend verticalement vers le haut depuis la base 17. L'épaisseur E17 de la base est faible relativement à la hauteur totale H10 du corps et au diamètre D10 du corps.Under the upper part 14, the body comprises a substantially cylindrical base 17 around the axis X10. The upper portion 14 extends vertically upwardly from the base 17. The thickness E17 of the base is small relative to the total height H10 of the body and to the diameter D10 of the body.
Dans l'exemple illustré, E17 < H10 / 4, et, E17 < D10 / 4. La base comprend, de part et d'autre de la partie supérieure, des alésages 18 traversants verticalement la base. Comme illustré à la figure 9, ces alésages 18 sont prévus pour fixer et positionner le corps 10 sur une pièce centrale 40 de la pompe 100.In the illustrated example, E17 <H10 / 4, and, E17 <D10 / 4. The base comprises, on either side of the upper part, bores 18 through vertically the base. As illustrated in FIG. 9, these bores 18 are designed to fix and position the body 10 on a central part 40 of the pump 100.
Grâce à cette disposition, il n'est pas nécessaire que le corps comprenne de taraudage pour le fixer sur un châssis. Des alésages 19 sont formés dans la partie supérieure 14 du corps, perpendiculairement aux faces opposées 15,16. With this arrangement, it is not necessary that the body includes tapping to fix it on a frame. Bores 19 are formed in the upper part 14 of the body, perpendicular to the opposite faces 15,16.
L'électro vanne 1 1, par l'intermédiaire de son interface 12, est fixée sur une face avant 15, parmi les faces opposées 15, 16, du corps 10, de sorte qu'elle s'étend horizontalement depuis cette face avant 15. L'interface 12 a une section verticale sensiblement rectangulaire. Elle comprend une face avant, verticale 21, contre laquelle est fixée l'électro vanne 11, de sorte que cette dernière s'étend horizontalement depuis la face avant 21 de l'interface 12. L'électro vanne 11 a une section verticale sensiblement rectangulaire, sensiblement identique à celle de l'interface, de sorte l'interface et l'électro vanne forment un ensemble de section verticale sensiblement constante, dans le prolongement l'une de l'autre. Une contre-pièce 22 est fixée contre la face arrière 16, parmi les faces opposées 15,16, du corps 10. Chaque alésage 19, formé dans la partie supérieure 14 du corps, est disposé de sorte qu'il débouche d'une part sur la face avant 15, en vis-à-vis de l'interface 12, et, d'autre part, dans la face sur la face arrière 16, en vis-à-vis de la contre-pièce 22. Chaque alésage 19 est en outre formé pour y introduire de façon ajustée une tige de fixation, non représentée aux figures. Chaque tige traverse le corps 10, en le maintenant pincé entre l'interface 12 et la contre-pièce 22, les fixant au corps. Grâce à cette disposition, il n'est pas nécessaire que le corps comprenne de taraudage pour y fixer l'interface 12 et/ou la contrepièce 22. The solenoid valve 1 1, via its interface 12, is fixed on a front face 15, among the opposite faces 15, 16, of the body 10, so that it extends horizontally from this front face 15 The interface 12 has a substantially rectangular vertical section. It comprises a front vertical face 21, against which is fixed the electro valve 11, so that the latter extends horizontally from the front face 21 of the interface 12. The electro valve 11 has a substantially rectangular vertical section , substantially identical to that of the interface, so the interface and the electro valve form a set of substantially constant vertical section, in the extension of one another. A counter-piece 22 is fixed against the rear face 16, among the opposite faces 15, 16, of the body 10. Each bore 19, formed in the upper part 14 of the body, is arranged so that it opens on the one hand on the front face 15, vis-à-vis the interface 12, and, secondly, in the face on the rear face 16, vis-à-vis the against-piece 22. Each bore 19 is further formed to fit therein a fixation rod, not shown in the figures. Each rod passes through the body 10, keeping it pinched between the interface 12 and the counterpart 22, fixing them to the body. With this arrangement, it is not necessary for the body to include tapping to fix the interface 12 and / or the counterpart 22.
Le corps comprend en outre une chambre de pompage 26, sensiblement cylindrique autour de l'axe X10. La chambre comprend une ouverture 25 dans une face inférieure 27 du corps, de façon à pouvoir y introduire un piston 41, représenté à la figure 9. La chambre s'étend au travers de la base 17 jusque dans la partie supérieure 14 du corps 10. Elle comprend une extrémité supérieure 28 de forme tronconique, formant un fond 28 axialement opposé à l'ouverture 25. Le diamètre du fond tronconique 28 va en se réduisant vers le haut. Le corps 10 comprend en outre un conduit 29 coudé reliant fluidiquement le sommet de l'extrémité supérieure 29 de la chambre avec la face 15 avant du corps, et au-delà, avec l'interface fluidique 12. Le conduit 29 sert à la fois d'admission et d'échappement pour un fluide dans la chambre de pompage 26. La distribution du fluide est assurée par l'électro vanne 11. La chambre 26 a un diamètre principal D26, mesuré dans la partie prévue pour le coulissement du piston 41 et une hauteur H26, mesurée entre la face inférieure 17 de la base 17 et la base de l'extrémité tronconique 28. The body further comprises a pumping chamber 26, substantially cylindrical about the axis X10. The chamber comprises an opening 25 in a lower face 27 of the body, so as to introduce a piston 41, shown in Figure 9. The chamber extends through the base 17 into the upper part 14 of the body 10 It includes one end upper 28 of frustoconical shape, forming a bottom 28 axially opposite the opening 25. The diameter of the frustoconical bottom 28 is decreasing upwards. The body 10 further comprises an angled conduit 29 fluidly connecting the top of the upper end 29 of the chamber with the front face 15 of the body, and beyond, with the fluid interface 12. The conduit 29 serves both intake and exhaust for a fluid in the pumping chamber 26. The fluid distribution is provided by the electro valve 11. The chamber 26 has a main diameter D26, measured in the portion provided for the sliding of the piston 41 and a height H26, measured between the lower face 17 of the base 17 and the base of the frustoconical end 28.
Comme illustré aux figures 3 et 4, une largeur L14 du corps, entre les deux faces 15,16 de sa partie supérieure 14, est prévue pour des chambres de plusieurs diamètres D26 de chambres. Comme illustré, pour une même largeur L14, le diamètre D26 de la chambre 26 de la figure 4 est plus petit que celui de la chambre 26 de la figure 3. Ainsi, pour des dimensions extérieures identiques, on peut fabriquer plusieurs corps avec des volumes de chambres différents, chacun adapté à un usage spécifique. Les chambres 26 des figures 3 et 4 ont en outre la même hauteur H26. Ainsi, seul le diamètre du piston doit être adapté au diamètre D26 de la chambre, la course possible du piston dans la chambre restant sensiblement la même. Ainsi, pour modifier le volume de pompage dans un dispositif de pompage 10-12, il suffit de modifier le couple piston/corps de pompe, le reste du dispositif étant identique. As illustrated in FIGS. 3 and 4, a width L14 of the body, between the two faces 15, 16 of its upper part 14, is provided for chambers of several diameters D26 of chambers. As illustrated, for the same width L14, the diameter D26 of the chamber 26 of Figure 4 is smaller than that of the chamber 26 of Figure 3. Thus, for identical external dimensions, one can manufacture several bodies with volumes. different rooms, each adapted to a specific use. The chambers 26 of FIGS. 3 and 4 also have the same height H26. Thus, only the diameter of the piston must be adapted to the diameter D26 of the chamber, the possible stroke of the piston in the chamber remaining substantially the same. Thus, to modify the pumping volume in a pumping device 10-12, it is sufficient to modify the piston / pump body torque, the rest of the device being identical.
On va maintenant décrire un deuxième mode de réalisation pour un corps selon l'invention, en ce qu'il diffère du mode de réalisation précédent, en référence aux figures 5 à 9. Aux figures 5 à 9, le corps 10 est prévu pour être monté sans électrovanne. Ainsi, outre le conduit coudé, il comprend un conduit latéral 30, reliant une paroi latérale 32 de la chambre, dans la zone cylindrique de diamètre principal D26, avec la face avant 15. L'interface 12 utilisée dans ce deuxième mode de réalisation est adaptée pour prolonger chacun des conduits 29, 30 par des conduits 34, 35 respectifs, afin de les connecter au reste de l'appareil. La chambre est donc reliée avec la face avant 15 par deux conduits, l'un servant à l'admission de fluide dans la chambre, l'autre conduit servant à l'échappement du fluide. L'interface 12 utilisée dans ce deuxième mode de réalisation est fixée par deux vis passant à travers les alésages 19. We will now describe a second embodiment for a body according to the invention, in that it differs from the previous embodiment, with reference to Figures 5 to 9. In Figures 5 to 9, the body 10 is provided to be mounted without solenoid valve. Thus, in addition to the bent duct, it comprises a lateral duct 30, connecting a side wall 32 of the chamber, in the cylindrical zone of main diameter D26, with the front face 15. The interface 12 used in this second embodiment is adapted to extend each of the conduits 29, 30 by respective conduits 34, 35, in order to connect them to the rest of the apparatus. The chamber is thus connected with the front face 15 by two ducts, one serving for the admission of fluid into the chamber, the other duct serving to exhaust the fluid. The interface 12 used in this second embodiment is fixed by two screws passing through the bores 19.
Comme illustré à la figure 8, et comme précédemment décrit en référence aux figures 3 et 4, il est possible de réaliser une famille de corps de pompe ayant chacun un volume de chambre différent, uniquement en modifiant le diamètre D26 de la chambre 26. Dans l'exemple illustré à la figure 8, la famille comprend quatre corps de pompe 10, adaptés à fonctionner sans électrovanne, ayant chacun un diamètre de chambre D26 spécifique. As illustrated in FIG. 8, and as previously described with reference to FIGS. 3 and 4, it is possible to produce a family of pump bodies each having a different chamber volume, only by modifying the diameter D26 of the chamber 26. In FIG. the example illustrated in Figure 8, the family comprises four pump bodies 10, adapted to operate without solenoid valve, each having a specific chamber diameter D26.
Ainsi, le corps 10 du deuxième mode de réalisation, illustré aux figures 5 à 8 diffère du corps selon le première mode de réalisation, illustré aux figures 1 à 4, seulement en ce qu'il comprend un deuxième conduit 30 formé dans une paroi latérale de la chambre 26. Thus, the body 10 of the second embodiment, illustrated in Figures 5 to 8 differs from the body according to the first embodiment, illustrated in Figures 1 to 4, only in that it comprises a second conduit 30 formed in a side wall from bedroom 26.
Selon l'invention, on peut donc fabriquer des ensembles de pompage avec ou sans électrovanne, ayant des volumes de chambre spécifiques, mais dont les corps de pompe 10 ont tous les mêmes dimensions extérieures D10, H10, L14. Pour fabriquer un tel corps de pompe 10, il suffit de disposer d'un unique moule extérieur, et d'un premier noyau spécifique adapté à former une chambre d'un diamètre D26 donné et d'un noyau utilisé seulement pour réaliser le conduit latéral, si nécessaire. Les autres noyaux restent, de préférence, identiques quel que soit le type de corps de pompe 10. According to the invention, it is therefore possible to manufacture pump assemblies with or without a solenoid valve, having specific chamber volumes, but whose pump bodies 10 all have the same external dimensions D10, H10, L14. To manufacture such a pump body 10, it suffices to have a single outer mold, and a first specific core adapted to form a chamber of a given diameter D26 and a core used only to make the side duct, if necessary. The other cores are preferably identical regardless of the type of pump body 10.
En outre, le corps étant fixé par des alésages, sans taraudage, il peut être fabriqué par moulage avec plus de précision et à moindre coût. En effet, le moulage d'un taraudage est une opération complexe ; un mauvais remplissage de matière autour du noyau formant moule pour le taraudage produit des amorces de rupture dans la matière injectée, ce qui diminue la fiabilité de la pièce ainsi fabriquée, et peut conduire à la mise au rébus de nombreuses pièces, ce qui en augmente le coût de fabrication. In addition, the body being fixed by bores, without tapping, it can be manufactured by molding more accurately and cheaply. Indeed, the molding of a tapping is a complex operation; poor material filling around the mold core for tapping produces break-in primers in the injected material, which decreases the reliability of the workpiece thus manufactured, and can lead to many parts being re-bounced, which increases the cost of manufacture.
Bien sûr, l'invention n'est pas limitée aux modes de réalisation préférés qui viennent d'être décrits mais, au contraire, l'invention est définie par les revendications qui suivent. Of course, the invention is not limited to the preferred embodiments which have just been described but, on the contrary, the invention is defined by the following claims.
Il apparaîtra en effet à l'homme de l'art que diverses modifications peuvent être apportées aux modes de réalisation décrits ci-dessus, à la lumière de l'enseignement qui vient de lui être divulgué. Ainsi, la face de connexion peut avoir une autre forme que plane, pourvu qu'elle puisse être montée avec étanchéité contre l'interface. Elle peut être cylindrique ou sphérique. Une face de connexion plane peut comporter une surface plane et des évidements adaptés pour permettre une fabrication par moulage, notamment pour éviter des épaisseurs trop importantes des parois. It will be apparent to those skilled in the art that various modifications can be made to the embodiments described above, in the light of the teaching that has just been disclosed. Thus, the connection face may have a shape other than planar, provided that it can be mounted with sealing against the interface. It can be cylindrical or spherical. A planar connection face may comprise a flat surface and recesses adapted to allow manufacture by molding, in particular to avoid excessive wall thicknesses.

Claims

Revendications claims
1. Corps de pompe (10), caractérisé en ce qu'il comprend : Pump body (10), characterized in that it comprises:
- une chambre de pompage (26) sensiblement cylindrique autour d'un axe de pompage (X10) comprenant une ouverture pour y introduire axialement un piston et un fond (28) axialement opposé à ladite ouverture ;  - a substantially cylindrical pumping chamber (26) around a pumping axis (X10) comprising an opening for axially introducing a piston and a bottom (28) axially opposite said opening;
- une face de connexion (15), de préférence sensiblement plane, de préférence parallèle audit axe (X10) ;  - A connection face (15), preferably substantially planar, preferably parallel to said axis (X10);
- un conduit coudé (29) reliant ledit fond (28) avec ladite face (15) ; et, - des moyens (19) pour fixer une interface fluidique (12) contre ladite face (15).  - an angled duct (29) connecting said bottom (28) with said face (15); and - means (19) for fixing a fluidic interface (12) against said face (15).
2. Corps de pompe selon la revendication î, caractérisé en ce que les moyens de fixation (19) de l'interface (12) sont dépourvus de taraudage, et, de préférence, sont des alésages lisses. 2. Pump body according to claim 1, characterized in that the fastening means (19) of the interface (12) are free of tapping, and, preferably, are smooth bores.
3. Corps de pompe selon l'une des revendications 1 et 2, caractérisé en ce qu'il comprend une base (17) et des moyens (18) pour fixer ladite base sur un châssis. 3. Pump body according to one of claims 1 and 2, characterized in that it comprises a base (17) and means (18) for fixing said base on a frame.
4. Corps de pompe selon la revendication 3, caractérisé en ce que les moyens de fixation (18) de la base (17) sont dépourvus de taraudage, et, de préférence, sont des alésages lisses. 4. Pump body according to claim 3, characterized in that the fastening means (18) of the base (17) are free of tapping, and, preferably, are smooth bores.
5. Corps de pompe selon l'une des revendications 1 à 4, caractérisé en ce qu'il comprend en outre un conduit latéral (30) reliant une paroi latérale (32) de la chambre (26) avec la face de connexion (15). 5. Pump body according to one of claims 1 to 4, characterized in that it further comprises a lateral duct (30) connecting a side wall (32) of the chamber (26) with the connecting face (15). ).
6. Famille de corps de pompe selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend plusieurs corps de pompes ayant des dimensions extérieures identiques, chaque corps de pompe ayant un diamètre de chambre (D26) spécifique. 6. Pump body family according to one of the preceding claims, characterized in that it comprises a plurality of pump bodies having identical outer dimensions, each pump body having a specific chamber diameter (D26).
7. Ensemble de pompage, caractérisé en ce qu'il comprend un corps de pompe (10) selon l'une des revendications 1 à 5 et une interface fluidique (12) fixée sur la face de connexion (15) dudit corps. 7. Pumping assembly, characterized in that it comprises a pump body (10) according to one of claims 1 to 5 and a fluid interface (12) fixed on the connection face (15) of said body.
8. Ensemble de pompage, caractérisé en ce qu'il comprend un corps de pompe (10) selon l'une des revendications 1 à 4, une électrovanne (11) fluidiquement raccordée à la face de connexion (15) dudit corps par ladite interface (12). 8. Pumping assembly, characterized in that it comprises a pump body (10) according to one of claims 1 to 4, a solenoid valve (11) fluidly connected to the connection face (15) of said body by said interface (12).
9. Ensemble de pompage selon la revendication 8, caractérisé en ce que l'interface fluidique fait partie intégrante de Γ électrovanne. 9. Pumping assembly according to claim 8, characterized in that the fluidic interface is an integral part of the solenoid valve.
10. Pompe (100) caractérisée en ce qu'elle comprend un ensemble de pompage selon l'une des revendications 7 à 9. 10. Pump (100) characterized in that it comprises a pump assembly according to one of claims 7 to 9.
11. Procédé pour fabriquer un corps de pompe parmi une famille selon la revendication 6, caractérisé en ce que : 11. A method for manufacturing a pump body from a family according to claim 6, characterized in that:
- on utilise un moule extérieur unique ;  a single external mold is used;
- on choisit un noyau de chambre correspondant à un diamètre de chambre (D26) voulu ; et,  a chamber core corresponding to a desired chamber diameter (D26) is chosen; and,
- on choisit d'utiliser ou pas un noyau pour réaliser un conduit latéral (30).  - One chooses to use or not a core to achieve a lateral duct (30).
EP17717787.0A 2016-03-29 2017-03-27 Pump module for a pump for blood sample extraction Active EP3436701B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1652663A FR3049659B1 (en) 2016-03-29 2016-03-29 MODULAR PUMP BODY
PCT/FR2017/050698 WO2017168080A1 (en) 2016-03-29 2017-03-27 Modular pump housing

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EP3436701A1 true EP3436701A1 (en) 2019-02-06
EP3436701B1 EP3436701B1 (en) 2020-12-02

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EP17717787.0A Active EP3436701B1 (en) 2016-03-29 2017-03-27 Pump module for a pump for blood sample extraction

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US (1) US20190107107A1 (en)
EP (1) EP3436701B1 (en)
CN (1) CN108884827B (en)
FR (1) FR3049659B1 (en)
WO (1) WO2017168080A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3235316C1 (en) * 1982-09-24 1984-01-05 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz Closure for housing openings on piston pumps
JP3667034B2 (en) * 1996-07-17 2005-07-06 光洋精工株式会社 Electric pump
US6991397B2 (en) * 2003-11-07 2006-01-31 Modular Systems, Inc. Dowel fastener and joints including same
FR2895919B1 (en) * 2006-01-11 2008-03-14 Pulssar Technologies Sarl PUMPING DEVICE.
FR2904066B1 (en) * 2006-07-18 2012-08-24 Pulssar Technologies PUMPING UNIT WITH HIGH LIFETIME.
FR2904065A1 (en) * 2006-07-18 2008-01-25 Pulssar Technologies Sarl Pumping unit for e.g. rinsing liquid substance sample, has guiding and connection module connecting pumping module and actuation module, and cylinder-spherical joint and cylindrical groove assembled to assure coupling between rod and piston
FR2974155B1 (en) * 2011-04-12 2015-12-18 Pulssar Technologies PISTON PUMP COMPRISING A FLAT GUIDE.
WO2013164495A1 (en) * 2012-05-03 2013-11-07 Garraf Maquinaria, S. A. Integral piston pump having an anti-leak system
US20140271264A1 (en) * 2013-03-15 2014-09-18 Anthony Florindi Piston pump drive train anti-backlash
CN104963961A (en) * 2015-06-26 2015-10-07 丁巧娜 Vehicle clutch pump

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CN108884827B (en) 2021-03-02
EP3436701B1 (en) 2020-12-02
FR3049659A1 (en) 2017-10-06
US20190107107A1 (en) 2019-04-11
WO2017168080A1 (en) 2017-10-05
FR3049659B1 (en) 2019-09-06
CN108884827A (en) 2018-11-23

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