EP1167767B1 - Régulation du débit d'une pompe péristaltique - Google Patents

Régulation du débit d'une pompe péristaltique Download PDF

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Publication number
EP1167767B1
EP1167767B1 EP00113614A EP00113614A EP1167767B1 EP 1167767 B1 EP1167767 B1 EP 1167767B1 EP 00113614 A EP00113614 A EP 00113614A EP 00113614 A EP00113614 A EP 00113614A EP 1167767 B1 EP1167767 B1 EP 1167767B1
Authority
EP
European Patent Office
Prior art keywords
flow
signal
flow vessel
pump
vessel
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.)
Expired - Lifetime
Application number
EP00113614A
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German (de)
English (en)
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EP1167767A1 (fr
Inventor
Johann Beller
Robert Zeller
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.)
Endress and Hauser Wetzer GmbH and Co KG
Original Assignee
Endress and Hauser Wetzer GmbH and Co KG
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
Priority to EP00113614A priority Critical patent/EP1167767B1/fr
Priority to ES00113614T priority patent/ES2261123T3/es
Application filed by Endress and Hauser Wetzer GmbH and Co KG filed Critical Endress and Hauser Wetzer GmbH and Co KG
Priority to DE50012987T priority patent/DE50012987D1/de
Priority to AT00113614T priority patent/ATE330122T1/de
Priority to AT05025638T priority patent/ATE425364T1/de
Priority to ES05025638T priority patent/ES2323878T3/es
Priority to EP05025638A priority patent/EP1637738B1/fr
Priority to DE50015594T priority patent/DE50015594D1/de
Priority to CA002350859A priority patent/CA2350859C/fr
Priority to US09/884,955 priority patent/US6871551B2/en
Publication of EP1167767A1 publication Critical patent/EP1167767A1/fr
Priority to US10/902,183 priority patent/US7328626B2/en
Application granted granted Critical
Publication of EP1167767B1 publication Critical patent/EP1167767B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/10—Pumps having fluid drive
    • F04B43/113—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/1133—Pumps having fluid drive the actuating fluid being controlled by at least one valve with fluid-actuated pump inlet or outlet valves; with two or more pumping chambers in series
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers

Definitions

  • the invention relates to a device for generating and guiding a fluid flow with a positive displacement pump and with a measuring arrangement and a method for monitoring this device.
  • Positive displacement pumps are known to be pumps which, in operation, have a discontinuous, in particular pulsating, fluid flow in the lumen of an at least sectionally, in particular elastically, deformable, flow vessel, e.g. of a hose.
  • DE-A 196 47 882, US-A 49 09 710, US-A 51 65 873, US-A 51 73 038, US-A 52 63 830, US-A 53 40 290, US-A 56 83 233, US-A 57 01 646, US-A 58 71 341, US-A 58 88 052, WO-A 97/41 353 and WO-A 98/31 935 each show a device for generating and guiding a discontinuous fluid flow which apparatus comprises a positive displacement pump having at least one deformable lumen flow vessel for guiding the fluid flow and a pump drive for deforming the lumen of the flow vessel.
  • the pump drive acts in sections on the fluid conducting flow vessel in such a way that it is temporarily, esp. Oscillating, deforming and thus the fluid directed transporting displacer displaced in the lumen.
  • Positive displacement pumps are each peristaltic displacement movements generated by a voltage applied to the flow vessel, non-circular cylindrical surface of a pump drive which rotates about an axis of rotation, while in US-A 51 65 873, US-A 52 63 830, US-A 56 83 233, US -A 58 88 052 and in WO-A 98/31 935 the displacement movements are effected by linear thrusting movements, which performs a push rod comprehensive pump drive against the flow vessel.
  • an electric motor is usually used, which is mechanically coupled by means of a drive shaft directly to the pump drive.
  • Drive motor and pump drive can also be mechanically coupled to one another via a gear or a belt drive.
  • an eccentric or a cam or a crank gear serve as a mechanical coupling between the electric motor and the pump drive, see. DE-A 196 47 882, US-A 51 65 873, US-A 52 63 830, US-A 56 83 233 and US-A 58 88 052.
  • a pneumatic or hydraulic piston motor can be used as a drive motor for generating linear plunger thrust movements.
  • Positive displacement pumps of the type described are due to a substantially homogeneous smooth inner wall of the flow vessel and due to the lack of rotating in the fluid flow drive elements particularly suitable for those applications in which leading to the fluid lumen of the flow vessel high chemical and / or biological purity requirements are made.
  • Displacement pumps are therefore often used, for example, in samplers for chemical-biological analyzes, especially in the drinking or in the wastewater sector.
  • samplers for chemical-biological analyzes
  • US-A-5,701,646 discloses the use of a piezoelectric film to measure the expansion of the flow vessel.
  • an important physical parameter for the operation of such samplers, in particular for the metering of liquid samples, is an actually conveyed or metered volume of liquid.
  • an instantaneous volume flow of the liquid flow is determined as a measure of a liquid volume delivered per unit time and integrated over a delivery time.
  • the volume flow is esp.
  • the volume flow rate is proportional to the speed of the displacement movements and thus also proportional to a set oscillation frequency of the lumen.
  • a mean volumetric flow of the calculation of the volume of fluid delivered is used as a basis.
  • the displacement of the flow vessel and thus the oscillations of the lumen are usually determined indirectly. These are a drive movement of the Drive motor, for example, at the drive shaft, detected by means of electrodynamic or optical tachometer and mapped into a drive signal representing this drive movement. In a corresponding evaluation electronics, the drive signal is converted into the volumetric flow and / or the conveyed fluid volume representing measuring signals.
  • the drive movement and thus also the measuring signals derived from the drive signal are only representative of the volumetric flow rate if, on the one hand, the flow vessel is filled with liquid in a known manner, in particular completely, and on the other hand, no slippage occurs between the pump drive and the drive motor.
  • the latter is e.g. in a drive belt connection or in a drive only on the impaled pump drive readily possible.
  • the manner of filling the flow vessel in turn is dependent to a large extent on its current installation position, esp. From a current suction height. Although this can be determined a priori, for example during commissioning, and stored as a set value in the evaluation electronics without further notice; In the case of, in particular, mobile-operated samplers, the installation position is, however, variable to a great extent, ie to be newly determined for each application and to be stored, if necessary. Furthermore, the installation position, esp. Even with permanently installed samplers, for example, change that the liquid level at a corresponding liquid withdrawal point operationally subject to more or less large fluctuations.
  • An object of the invention is therefore to provide a device with a positive displacement pump and with a measuring arrangement which robustly and reliably detects an actual displacement movement of the flow vessel and provides a measuring signal representing this, esp. For generating a current volume flow representing the flow rate estimate and / or is suitable for generating a status signal signaling a current operating state.
  • Another object of the invention is to provide a method providing information for monitoring such a device.
  • the invention consists in one
  • the invention consists in the use of a device according to the invention in a sampler.
  • the evaluation electronics generates by means of the sensor signal a Quillingtonwert representing an instantaneous volume flow of the fluid flow.
  • the evaluation electronics generates a first measurement signal by means of the sensor signal, which represents a frequency of the displacement movements.
  • the evaluation electronics generates a volume estimated value by means of the sensor signal, which represents a totalized delivery volume.
  • the evaluation electronics generates by means of the sensor signal Status signal representing a current operating state of the positive displacement pump.
  • a basic idea of the invention is not to determine the displacement movement of the flow vessel or the oscillations of the lumen thereof on the basis of their causes, namely the drive movements of the drive motor, but on the basis of their effects in the device.
  • the responses of the device to the displacements to be detected are e.g. a, in particular elastic, partial deformation of the support means of the positive displacement pump.
  • An advantage of the invention is that the volume flow can be determined independently of the existing between the drive motor and the pump drive mechanical coupling and virtually by means of a single sensor signal.
  • Another advantage of the invention is that the measuring arrangement and thus also the method both at Devices can be used with electric motor driven positive displacement pump as well as device with hydraulically or pneumatically driven positive displacement pump.
  • Another advantage of the invention is also to be seen in the fact that even existing devices of the type described can be easily retrofitted with such a measuring arrangement.
  • FIG. 1 shows a device for transporting a fluid, in particular a liquid, by means of a positive-displacement pump 1.
  • the device is suitable in a particularly advantageous manner for use in the removal and possibly the storage of liquids serving sampler PN.
  • the positive displacement pump 1 comprises a support means 11, in particular a pump housing, a pumping drive 12 supported by it, in particular a displacer, and a flow vessel 13 of FIG variable lumen 13A, esp. Of at least partially variable cross-section, for guiding the fluid.
  • a flow vessel 13 all conventional in such positive displacement, for example made of polyethylene or silicone, elastic tubes can be used.
  • the flow vessel 13 can be embodied both in one piece and as a multi-part.
  • the flow vessel 13 is displaced by means of the pump drive 12 in a, esp. Peristaltic, displacement s 13 of predetermined frequency, for example in a range of 10 Hz to 20 Hz, that the fluid located in the oscillating lumen 13A, esp. Pulsing, flows in a predetermined flow direction.
  • the displacer movement is practically a wave movement of a wall of the flow vessel 13 and thus of the lumen 13A enclosed by the latter, wherein a running speed of the wave movement sets the volume flow, cf. Fig. 4.
  • the pump drive 12 For generating the displacer movement s 13, the pump drive 12, as shown schematically in FIG. 4, acts on the flow vessel 13 with a temporally and locally, in particular periodically, variable compression force F, in such a way that within a pump-effective compression region the flow vessel 13 and thus its lumen 13A fluidverdrnatureend, esp. Elastic, are deformed.
  • This is effected in the positive displacement pump 1 of the embodiment of FIG. 2, 3, characterized in that the pump drive 12 with non-circular cross section roll on the flow vessel 13 and thus the Flow vessel 13, resting against the support means 11, is periodically compressed and allowed to relax.
  • the pump drive 12 is partially in contact with the flow vessel 13, which is likewise supported by the carrier 11.
  • the pump drive 12 is formed in the embodiment as a drum or disc-shaped displacer of non-circular cross-section, ie as a displacer with a non-circular cylindrical surface.
  • the displacer here four, spaced apart, esp. Rotationally supported, roller-shaped rolling elements, which act in accordance with a set direction of rotation of the pump drive 12 sequentially to the flow vessel 13 during operation of the positive displacement pump 1.
  • the pump drive 12 is, as usual with positive displacement pumps with rotary pump drive, with a drive shaft 15 of a, esp. Electric, drive motor 14, for example via a transmission or a drive belt connection, mechanically coupled; but he can also directly on the drive shaft 15 attached.
  • the drive motor 14 carries out corresponding drive movements of a predetermined speed - in this case rotational movements with a frequency of the displacement movements s 13 proportional, esp. Adjustable, engine speed of eg 200 min -1 to 3000 min -1 , via the drive shaft 15, possibly reduced by means of gear, be transferred to the pump drive 12.
  • the pump drive 12 is designed as a linear pump drive 12, it can also be driven by means of a hydraulic or by means of a pneumatic motor, cf. WO-A 98/31 935.
  • the flow vessel 13 For receiving liquid during operation of the device, the flow vessel 13 communicates with an inlet end with a corresponding liquid withdrawal point.
  • liquid can be taken up by placing the flow vessel 13 in the, e.g. immersed in an open channel or tank, liquid is drawn and sucked against it due to the manner of oscillating in the manner described above lumen 13A against gravity; but the liquid can also be flowed from a suitable liquid withdrawal point in the direction of gravity and / or from a pipeline.
  • the device comprises a measuring arrangement 2, which reacts to the displacement movements s 13 carried out by the flow vessel 13 , with an evaluation electronics 22, to which a sensor signal x 21 representing the displacement movements s 13 is fed.
  • the measuring arrangement 2 in a first example, which is not part of this invention, comprises a fluid-contacting, in particular capacitive or resistive, pressure sensor 21 'which, as shown schematically in FIG a currently acting in the fluid, in particular static, first pressure p 1 in the lumen 13A responds.
  • the pressure sensor 21 at least one isolated by at least one pressure diaphragm against the lumen 13A and operation on said at least one pressure diaphragm to the pressure p 1 is acted upon on pressure-measuring chamber.
  • the pressure p 1 to be detected is practically a momentary internal pressure set by means of the displacement pump 1 in an inlet-side region of the flow vessel 13, resulting in a calibratable dependency on an instantaneous operating state of the device, eg the current installation position and / or filling of the device Flow vessel and and / or the instantaneous frequency of the displacement movements s 13 , sets.
  • pressure p 1 is at least temporarily, especially even when the flow vessel 13 is not filled with liquid, to a range from 200 hPa to 400 hPa (0.2 bar to 0.4 bar) and thus lower than from the outside set to the flow vessel 13 acting static second pressure p 2 .
  • the pressure p 2 may be, for example, an atmospheric air pressure of about 1000 hPa.
  • the measuring arrangement 2 esp.
  • To the pressure p 1 is also to capture and map into the sensor signal x 21 , when the pressure p 1 is currently set lower than the pressure p 2 .
  • This can be the Pressure sensor 21 'be executed both as a pressure p 1 absolutely detecting pressure sensor with evacuated pressure measuring chamber and the pressure p 1 relative to the pressure p 2 detecting pressure sensor.
  • the measuring arrangement 2 comprises a piezoresistive, strain sensor 21 "which is fixed directly on the support means 11 and which, as shown schematically in FIG. 5, expands the support means 13 caused by the displacements s 13 of the flow vessel 13 11 detected and converted into the sensor signal x 21 .
  • a strain sensor 21 " can also serve a strain relative or absolutely detecting path, speed or acceleration sensor.
  • the force acting on the flow vessel 13 compression force F of the pump drive 12 is partially converted into a force acting on the support means 11 compression spring force, whereby the support means 11 sections, esp. Elastic, is deformed.
  • the carrier 11 undergoes a measurable strain, the extent of which esp. Is determined by the instantaneous pressure p 1 in the lumen 13A of the flow vessel 13.
  • the compression spring force and thus also the elongation of the carrier 11, for example, the material, esp. Of its modulus of elasticity, and / or a current spatial form of the flow vessel 13 is dependent.
  • This dependence of the deformation of the support means 11 is to be accurately determined by means of appropriate calibration measurements in which the flow vessel 13 is filled, for example successively defined with corresponding liquids or left empty and a corresponding instantaneous signal value of the sensor signal x 21 as a reference value for the momentary filling in the evaluation Electronics 22 is stored.
  • the sensor signal x 21 generated according to said first example by means of the pressure sensor 21 'can advantageously be used to represent a volume estimated value currently representing the volume flow rate X v and / or a volume estimated value representing the totalized delivery volume, ie the volume flow rate integrated over a delivery time determine.
  • the evaluation electronics 22 as shown in Fig. 6, a signal portion of the sensor signal x 21 , esp. With the frequency of the displacement movement s 13 , transmitting bandpass circuit 220 of adjustable bandwidth and an output side of the band-pass circuit 220 connected downstream frequency counter circuit 221.
  • a band-pass circuit 220 may, for example, the expert known switching capacitors filter and / or voltage-controlled active filter serve.
  • the sensor signal x 21 in a, esp. digital, first measured signal x 221 transformed, wherein a current signal value X ⁇ of the measuring signal x 221 represents the frequency of the displacement movements s 13 .
  • the bandpass circuit 220 serves esp. The removal of DC components of the sensor signal x 21 and for the suppression of higher-frequency noise voltages.
  • the bandwidth of the bandpass circuit 220 is accordingly set so that any changes in the frequency of the displacement movement s 13 , for example due to load-induced fluctuations in the engine speed, do not lead to a blocking of the sensor signal x 21 .
  • this frequency changes operationally over a wide range, for example ⁇ 5 s -1
  • the bandwidth of the band-pass circuit 220 configured in particular as a switched-capacitor circuit can also be determined, for example by means of one of the evaluation Electronics 22 generated, current set value for the motor speed, tracked.
  • the setting value can be derived, for example, from a drive signal directly tapped on the drive motor in the above-mentioned manner.
  • the volumetric flow of a transported liquid is dependent on the concrete realization of the positive displacement pump 1, namely the design of the pump drive 12 and the flow vessel 13, as well as on the frequency of the displacement movements s 13 .
  • the instantaneous volume flow is also from a determined by a current spatial distance between the positive displacement pump and a liquid level set suction height.
  • this suction height during commissioning of the device is determined accordingly and save as a fixed value K h in the evaluation electronics 22.
  • K 1 is a constant which determines the dependence of the volume flow rate on the frequency of the displacement movement s 13 and on the instantaneous suction height, in particular by calibration.
  • the flow estimate X v can also be approximated using a higher order polynomial.
  • the flow estimate X v can advantageously be derived virtually directly from the measurement signal x 221 .
  • the volume flow is practically proportional to a four times the frequency of the displacement movement s 13th
  • the flow estimate X v is correspondingly only available over the delivery time integrate, for example by multiplication with the same or by multiplication with a number of measured zero crossings of the bandpass filtered sensor signal output of the bandpass circuit 220th
  • the current suction height for a more accurate determination of the flow rate X v, however, to update accordingly.
  • the evaluation electronics 22 furthermore comprise a microcomputer 227, to which the measuring signal X 221 and / or the measuring signal x 223 and optionally the measuring signal x 222 are supplied on the input side via corresponding analog-to-digitally converting signal ports; if necessary, of course, the frequency counter circuit 221 and / or the rectifier circuit 223 are shown as a digital circuit, which then, of course, an output of the band-pass circuit 220 is supplied according digitisertes sensor signal.
  • the sensor signal x 21 generated by means of the sensor 21 "according to the invention can also advantageously be used to generate, by means of the evaluation electronics 22, a digital, status signal Z, which signals a momentary operating state of the positive displacement pump 1.
  • the evaluation electronics 22 as shown schematically in Fig. 7, a first Schmitt trigger 224, which converts the measurement signal x 221 output of the frequency counter circuit 221 in a binary first monitoring signal x 221 ' ,
  • the measuring signal x 221 is compared with a reference frequency value of the Schmitt trigger 224, which is set so that the monitoring signal x 221 'assumes a high level when the frequency of the displacement movement s 13 is greater than or equal to one in stationary operation of the Positive displacement pump 1 is minimally adjusting frequency.
  • the frequency reference value during commissioning for the positive displacement pump 1 is determined and set, which is for example subjected to a maximum load to be expected during operation.
  • a corresponding filling reference value of the Schmitt trigger 226 is set here such that a binary third monitoring signal x 223 'supplied on the output side assumes a high level when the flow vessel 13 is filled with at least a predetermined minimum volume of the liquid to be conveyed; otherwise, esp. In an increased bubble formation in the fluid, the monitoring signal has a low level.
  • the filling reference value to be set can be determined, for example, by means of a corresponding calibration measurement and set during commissioning.
  • the status signal Z can be output via the output port sequentially or in parallel, eg to a display unit of the device serving to visualize the current operating state.
  • the status signal Z can also be applied to a control electronics for the positive displacement pump, which shuts off the positive displacement pump 1, for example, in the event of an error of the device detected by means of the measuring arrangement 2 '.
  • the monitoring signal x 221 ' can also be derived from the measuring signal X 221 by means of trigger functions implemented in the microcomputer 227.
  • a triggered start-up function is preferably also implemented which serves to evaluate the monitoring signal X 221 'only after the positive-displacement pump 1 has been switched on, namely after the expiry of a set time specification corresponding to a startup time.
  • Monitoring signal y 14 may be a binary switching signal, for example, with a high level signals that the positive displacement pump 1 is turned on and signals with a low level that the positive displacement pump 1 is turned off.
  • a monitoring signal y 14 but can also serve a measuring signal, for example, represents a momentarily fed into the positive displacement pump 1 stream.
  • the adjustment signal y 14 can also be derived from the aforementioned drive signal, for example by means of amplitude-measuring or effective value-measuring change-to-direct-conversion converters.
  • the timing for the start function is set so that the positive displacement pump 1 is safely in steady state operation after being turned on, in the event that there is no malfunction.
  • the start-up time until steady-state operation is reached is again determined by appropriate calibration measurements and converted into the time specification.
  • FIG. 8 an example of a course of the sensor signal x 21 and a corresponding course of the measuring signal x 221 during a transition to steady-state operation are shown.
  • a second logic function activated by means of the start function is implemented in the microcomputer 227, which sets a second signal value for the status signal Z if the monitoring signal X 221 'has a high level and the monitoring signal X 222 ' simultaneously has a low level.
  • the status signal Z can signal, for example, flow vessel 13 not immersed in the liquid and / or a leaking flow vessel 13 which is completely or partially filled with air.
  • a third logic function activated by means of the start function is implemented in the microcomputer 227, which generates a third signal value for the status signal Z is set when the monitoring signal x 221 'has a low level and the monitoring signal y 14 simultaneously has a high level.
  • the status signal Z can signal, for example, a faulty pump drive 12.
  • the support means 11 even at a standstill pump drive 12 due to a supported by the flow vessel 13 mechanical bias already has a low elastic deformation, which is measurable from a basic shape of the support means 11 in non-installed pump drive 12 and / or flow vessel 13, eg during a maintenance or servicing measure.
  • the measuring arrangement may also comprise other sensors, e.g. temperature measuring temperature compensation sensors, e.g. can be attached to the flow vessel 13 or on the support means 11.

Claims (6)

  1. dispositif pour la production d'un courant de flux, lequel dispositif comprend :
    - une pompe volumétrique (1)
    -- avec au moins un récipient de courant (13) avec des lumen déformables (13A) servant à conduire un fluide,
    -- avec un entraînement (12) à pompe pour générer des mouvements de refoulement du récipient de courant déformant le lumen (13A) et générant le courant de fluide et
    -- avec un moyen porteur (11) pour maintenir le récipient de courant (13),
    - le récipient de courant (13) est comprimé lors du fonctionnement de l'entraînement de pompe (12) de façon temporaire et par tronçon contre le moyen porteur (11), de manière à ce que celui-ci se trouve étiré de façon élastique, ainsi
    - qu'un dispositif réagissant aux mouvements de refoulement (s13) réalisés par le récipient de courant (13),
    -- avec un capteur (21 ") de dilatation qui détecte une dilatation du moyen porteur (11) et délivre un signal de capteur (x21) représentant les mouvements de refoulement réalisés par le récipient de courant (13) et
    -- avec une électronique d'évaluation (22) pour le signal de capteur.
  2. Dispositif selon la revendication 1, dans lequel l'électronique d'évaluation (22) on génère au moyen du signal (x21) capteur un premier signal (x221) qui représente une fréquence des mouvements de refoulement (s13).
  3. Dispositif selon une des revendications précédentes, dans lequel l'électronique d'évaluation (22) génère au moyen du signal (x21) capteur une valeur (Xv) d'estimation de débit, qui représente un débit volumétrique momentané du courant de fluide.
  4. Dispositif selon une des revendications précédentes, dans lequel l'électronique d'évaluation (22) génère au moyen du signal (x21) capteur un signal (Z) d'état qui représente un état de service momentané de la pompe volumétrique (1).
  5. Utilisation du dispositif selon une des revendications précédentes dans un dispositif (PN) de prélèvement d'échantillons.
  6. Procédé pour la surveillance d'un dispositif servant à la production d'un courant de flux, lequel dispositif comprend :
    - une pompe volumétrique (1)
    -- avec au moins un récipient de courant (13) de lumens (13A) déformables servant au guidage d'un fluide,
    -- avec un entraînement (12) de pompe pour la production de mouvements de refoulement du récipient de courant (13) déformés par le lumen (13A) et générant le courant de fluide,
    -- avec un moteur d'entraînement (14) pour l'entraînement de pompe et
    -- avec un moyen porteur (11) pour maintenir le récipient de courant (13) ainsi
    - qu'un dispositif de mesure (2) réagissant aux mouvements de refoulement (s13) réalisés par le récipient de courant (13) avec un capteur de dilatation (21") pour la détection d'une dilatation du moyen porteur (11), lequel procédé comprend les étapes suivantes :
    - génération de mouvements d'entraînement du moteur d'entraînement (14) pour la production des mouvements de refoulement du récipient de courant (13),
    - détection d'une dilatation du moyen porteur (11) pour générer un signal capteur (x21) représentant momentanément les mouvements de refoulement (s13) et
    - la production d'un signal de statut (Z) signalisant un état de fonctionnement momentané du dispositif au moyen du signal de capteur.
EP00113614A 2000-06-28 2000-06-28 Régulation du débit d'une pompe péristaltique Expired - Lifetime EP1167767B1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DE50015594T DE50015594D1 (de) 2000-06-28 2000-06-28 Regelung der Fluidströmung in einer peristaltischen Pumpe
DE50012987T DE50012987D1 (de) 2000-06-28 2000-06-28 Regelung der Fluidströmung in einer peristaltischen Pumpe
ES00113614T ES2261123T3 (es) 2000-06-28 2000-06-28 Regulacion del caudal en una bomba peristaltica.
AT05025638T ATE425364T1 (de) 2000-06-28 2000-06-28 Regelung der fluidströmung in einer peristaltischen pumpe
ES05025638T ES2323878T3 (es) 2000-06-28 2000-06-28 Regulacion del caudal en una bomba peristaltica.
EP05025638A EP1637738B1 (fr) 2000-06-28 2000-06-28 Régulation du débit d'une pompe péristaltique
EP00113614A EP1167767B1 (fr) 2000-06-28 2000-06-28 Régulation du débit d'une pompe péristaltique
AT00113614T ATE330122T1 (de) 2000-06-28 2000-06-28 Regelung der fluidströmung in einer peristaltischen pumpe
CA002350859A CA2350859C (fr) 2000-06-28 2001-06-15 Appareil de creation et de conduction d'un flux de liquide et methode de controle de l'appareil
US09/884,955 US6871551B2 (en) 2000-06-28 2001-06-21 Apparatus for generating and conducting a fluid flow, and method of monitoring said apparatus
US10/902,183 US7328626B2 (en) 2000-06-28 2004-07-30 Apparatus for generating and conducting a fluid flow, and method of monitoring said apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00113614A EP1167767B1 (fr) 2000-06-28 2000-06-28 Régulation du débit d'une pompe péristaltique

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP05025638A Division EP1637738B1 (fr) 2000-06-28 2000-06-28 Régulation du débit d'une pompe péristaltique

Publications (2)

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EP1167767A1 EP1167767A1 (fr) 2002-01-02
EP1167767B1 true EP1167767B1 (fr) 2006-06-14

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EP05025638A Expired - Lifetime EP1637738B1 (fr) 2000-06-28 2000-06-28 Régulation du débit d'une pompe péristaltique
EP00113614A Expired - Lifetime EP1167767B1 (fr) 2000-06-28 2000-06-28 Régulation du débit d'une pompe péristaltique

Family Applications Before (1)

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EP05025638A Expired - Lifetime EP1637738B1 (fr) 2000-06-28 2000-06-28 Régulation du débit d'une pompe péristaltique

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EP (2) EP1637738B1 (fr)
AT (2) ATE425364T1 (fr)
CA (1) CA2350859C (fr)
DE (2) DE50012987D1 (fr)
ES (2) ES2261123T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2417052B (en) * 2004-08-12 2009-12-23 Single Use Surgical Ltd Pressure monitor for peristaltic pumps
DE102009001861A1 (de) 2009-03-25 2010-09-30 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Verfahren zum Betreiben einer Analysevorrichtung
CN101963146B (zh) * 2010-10-25 2012-06-06 哈尔滨工程大学 恒流蠕动泵
JP2022504934A (ja) * 2018-10-19 2022-01-13 エフ・ホフマン－ラ・ロシュ・アクチェンゲゼルシャフト マイクロドージング
JP2021105392A (ja) * 2019-12-27 2021-07-26 学校法人 中央大学 ポンプユニット及びポンプ並びに搬送物の特性検出方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5701646A (en) * 1990-02-02 1997-12-30 Isco, Inc. Method of making a sensor
US5695473A (en) * 1994-07-27 1997-12-09 Sims Deltec, Inc. Occlusion detection system for an infusion pump
EP0986709A4 (fr) * 1997-01-17 2001-05-02 Niagara Pump Corp Pompe lineaire peristaltique

Also Published As

Publication number Publication date
CA2350859C (fr) 2006-10-03
DE50012987D1 (de) 2006-07-27
DE50015594D1 (de) 2009-04-23
EP1167767A1 (fr) 2002-01-02
ES2323878T3 (es) 2009-07-27
EP1637738A2 (fr) 2006-03-22
CA2350859A1 (fr) 2001-12-28
EP1637738A3 (fr) 2006-04-05
ATE425364T1 (de) 2009-03-15
ATE330122T1 (de) 2006-07-15
EP1637738B1 (fr) 2009-03-11
ES2261123T3 (es) 2006-11-16

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