EP3436701A1 - Modulares pumpengehäuse - Google Patents

Modulares pumpengehäuse

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
English (en)
French (fr)
Other versions
EP3436701B1 (de
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/de
Application granted granted Critical
Publication of EP3436701B1 publication Critical patent/EP3436701B1/de
Not-in-force 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP17717787.0A 2016-03-29 2017-03-27 Pumpenmodul für eine pumpe zur blutprobenentnahme Not-in-force EP3436701B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1652663A FR3049659B1 (fr) 2016-03-29 2016-03-29 Corps de pompe modulable
PCT/FR2017/050698 WO2017168080A1 (fr) 2016-03-29 2017-03-27 Corps de pompe modulable

Publications (2)

Publication Number Publication Date
EP3436701A1 true EP3436701A1 (de) 2019-02-06
EP3436701B1 EP3436701B1 (de) 2020-12-02

Family

ID=56008783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17717787.0A Not-in-force EP3436701B1 (de) 2016-03-29 2017-03-27 Pumpenmodul für eine pumpe zur blutprobenentnahme

Country Status (5)

Country Link
US (1) US20190107107A1 (de)
EP (1) EP3436701B1 (de)
CN (1) CN108884827B (de)
FR (1) FR3049659B1 (de)
WO (1) WO2017168080A1 (de)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3235316C1 (de) * 1982-09-24 1984-01-05 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz Verschluss fuer Gehaeuse-OEffnungen bei Kolbenpumpen
JP3667034B2 (ja) * 1996-07-17 2005-07-06 光洋精工株式会社 電動ポンプ
US6991397B2 (en) * 2003-11-07 2006-01-31 Modular Systems, Inc. Dowel fastener and joints including same
FR2895919B1 (fr) * 2006-01-11 2008-03-14 Pulssar Technologies Sarl Dispositif de pompage.
FR2904065A1 (fr) * 2006-07-18 2008-01-25 Pulssar Technologies Sarl Unite de pompage a duree de vie elevee.
FR2904066B1 (fr) * 2006-07-18 2012-08-24 Pulssar Technologies Unite de pompage a duree de vie elevee.
FR2974155B1 (fr) * 2011-04-12 2015-12-18 Pulssar Technologies Pompe a piston comportant un guidage a plat.
WO2013164495A1 (es) * 2012-05-03 2013-11-07 Garraf Maquinaria, S. A. Bomba de pistón monobloque con sistema antipérdidas
US20140271264A1 (en) * 2013-03-15 2014-09-18 Anthony Florindi Piston pump drive train anti-backlash
CN104963961A (zh) * 2015-06-26 2015-10-07 丁巧娜 一种车辆离合器泵

Also Published As

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

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