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WO2020244927A1 - Procédé de fonctionnement d'au moins un dispositif de transport de fluide - Google Patents

Procédé de fonctionnement d'au moins un dispositif de transport de fluide Download PDF

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Publication number
WO2020244927A1
WO2020244927A1 PCT/EP2020/064094 EP2020064094W WO2020244927A1 WO 2020244927 A1 WO2020244927 A1 WO 2020244927A1 EP 2020064094 W EP2020064094 W EP 2020064094W WO 2020244927 A1 WO2020244927 A1 WO 2020244927A1
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WO
WIPO (PCT)
Prior art keywords
motor
operating
comparison
fluid
performance
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.)
Ceased
Application number
PCT/EP2020/064094
Other languages
German (de)
English (en)
Inventor
Martin Bergt
Thomas JAMBOR
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2020244927A1 publication Critical patent/WO2020244927A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088—Testing machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F04D15/0236—Lack of liquid level being detected by analysing the parameters of the electric drive, e.g. current or power consumption

Definitions

  • a method has already been proposed for operating at least one fluid delivery device, in particular a coolant pump, for detecting dry running of the at least one fluid delivery device, the fluid delivery device including at least one motor.
  • the invention is based on a method for operating at least one fluid delivery device, in particular for operating at least one coolant pump, for detecting dry running of the at least one fluid delivery device, the fluid delivery device comprising at least one motor.
  • the at least one motor is braked at least from a defined speed to detect dry running with a direction of rotation opposite to an operating direction of the at least one motor.
  • the at least one motor is accelerated at least once, in particular several times, such as twice, three times or the like, to a defined speed in a direction of rotation opposite to the operating direction, operated at the defined speed and at the defined speed braked. It is conceivable that in at least one method step with repeated acceleration and braking of the at least one motor, differently defined speeds are achieved.
  • the at least one motor prior to operation with a direction of rotation in the operating direction, is initially operated with the direction of rotation opposite to the operating direction of the at least one motor.
  • the at least one motor is operated to detect a dry run before operation with a direction of rotation in the operating direction initially for a defined period of time with the direction of rotation opposite to the operating direction of the at least one motor, the at least one motor between an operation with one direction of rotation in the operating direction and with the direction of rotation opposite to the operating direction stands still for a defined period.
  • a voltage and / or a current intensity at the at least one motor is measured at at least one, in particular predetermined, comparison speed in the direction of rotation opposite to the operating direction of the at least one motor.
  • the voltage and / or the current intensity at the at least one motor is measured at several, such as two, three or the like, in particular predetermined, comparison speeds in the direction of rotation opposite to the operating direction of the at least one motor.
  • the voltage and / or the current strength at the at least one motor at at least one, in particular predetermined, comparison speed in the direction of rotation opposite to the operating direction of the at least one motor is measured several times, such as twice, three times or the like, in particular measured a determination of a Mean of several measurements.
  • the voltage and / or the current strength at the at least one motor is measured at at least one, in particular predetermined, comparison speed in the direction of rotation opposite to the operating direction of the at least one motor over a defined period of time, in particular to determine a time Mean. It is conceivable that in at least one method step the voltage and / or the current intensity at the at least one motor at at least one, in particular predetermined, comparison speed in the direction of rotation opposite to the operating direction of the at least one motor is measured several times over a defined period of time, in particular to determine a time average from several measurements. Measured and / or calculated values are preferably stored in at least one method step. Voltages and / or currents can advantageously be measured precisely. It can advantageously be achieved accurate measurements of the voltage and / or current intensity as a function of a speed in a certain direction of rotation. In particular, it is advantageously possible to record reliable measured values for detecting a dry run.
  • a comparative power of the at least one motor at a, in particular predetermined, comparative speed is calculated in the direction of rotation opposite to the operating direction of the at least one motor.
  • the comparison power of the at least one motor at the, in particular predetermined, comparison speed in the direction of rotation opposite to the operating direction of the at least one motor is calculated from the measured voltage and / or current strength.
  • the comparative power of the at least one motor is preferably calculated from the measured voltage and / or current strength at several, in particular predetermined, comparative speeds in the direction of rotation opposite to the operating direction of the at least one motor.
  • the comparative power of the at least one motor is preferably calculated at several, in particular predetermined, comparative speeds in the direction of rotation opposite to the operating direction of the at least one motor from at least one measured and / or calculated mean value (s) of the voltage and / or the current intensity .
  • the comparative power of the at least one motor several times, such as for example twice, three times or the like. Calculated, in particular averaged.
  • An advantageously quick calculation of the power of the at least one motor can be achieved.
  • An advantageously accurate and / or reliable calculation of the power of the motor, in particular when the motor is operated in the direction of rotation opposite to and in the operating direction of the motor can be achieved.
  • An advantageous avoidance of errors in the calculation of the power in particular when the motor is operated in the direction of rotation opposite to the operating direction of the motor, can be achieved.
  • a comparative power at a, in particular a predetermined, comparative speed in the direction of rotation opposite to the operating direction of the at least one motor with an operating power at an operating speed in one direction of rotation that corresponds in particular to a value with a comparative speed is compared in the operating direction.
  • the at least one motor is operated after operation with the direction of rotation opposite to the operating direction with a direction of rotation in the operating direction of the at least one motor, in particular with an operating speed.
  • a difference between the operating performance and the comparative performance is preferably calculated and / or stored.
  • a comparison parameter is preferably determined, in particular calculated and / or stored, from the comparison of the operating performance and the comparison performance in at least one method step each time the at least one motor is started up.
  • a direction of rotation of the fluid delivery device on filling with fluid can advantageously be used.
  • An advantageous comparison and operating speed can be selected which advantageously reduces the load on the fluid delivery device in the event of a dry run.
  • a comparison of the motor can advantageously be achieved depending on its directions of rotation. In particular, the comparison and operating speed can advantageously be selected to be low, in particular for a comparison of the motor.
  • the measurement volume of the fluid delivery device preferably has a fluid level at which the fluid delivery device is intended, in particular, for operation.
  • the total volume of the fluid circuit preferably has a total fluid level optimum at which the fluid delivery device is intended in particular for operation. It is conceivable that the optimum fluid level corresponds to a percentage filling of less than 100% of the measurement volume.
  • the measuring volume of the fluid delivery device preferably has a fluid level tolerance.
  • a “fluid level tolerance” is to be understood in particular as a defined maximum percentage deviation of the fluid level from the optimum fluid level, in particular in the measurement volume of the fluid delivery device, at which the fluid delivery device can be operated, in particular safely.
  • a “fluid level difference, in particular a coolant level difference” is to be understood in particular as a percentage deviation of the fluid level, in particular the coolant level, from a defined fluid level, in particular a defined coolant level, for example the fluid level optimum or the fluid level limit value.
  • the total volume of the fluid circuit preferably has a total fluid level limit value. It is conceivable that the total fluid level optimum of the total volume corresponds to the fluid level optimum of the measurement volume. It is conceivable that the total fluid level limit value of the total volume corresponds to the fluid level limit value of the measurement volume. It is conceivable that the overall fluid level tolerance of the total volume corresponds to the fluid level tolerance of the measuring volume.
  • the comparison parameter in particular the difference between the operating performance and the comparison performance
  • stored data for the comparison parameters in particular for the difference between the operating performance and the comparison performance
  • the stored data for the comparison parameters preferably contain pairs of values which define the difference between the operating performance and the comparison performance and the corresponding defined, in particular known, fluid level differences, in particular coolant level differences, the fluid level, in particular the coolant level , from the fluid level limit value, in particular coolant level limit value, include.
  • the data preferably include at least one comparison table in which the value pairs are summarized. It is conceivable that the value pairs in the comparison table are interpolated in order to achieve continuous coverage of a value range for the comparison parameter and corresponding fluid level differences, in particular the fluid level from the fluid level optimum and / or the fluid level limit value.
  • Each comparison parameter in particular each difference between the operating performance and the comparison performance, preferably corresponds to a fluid level of the fluid in the measurement volume of the fluid delivery device.
  • Each comparison parameter, in particular each difference between the operating performance and the comparison performance preferably corresponds to fluid level differences of the fluid, in particular the fluid level from the fluid level optimum and / or from the fluid level limit value, in the measurement volume of the fluid delivery device and / or in the total volume.
  • comparison table is stored ex works.
  • comparison table is determined in at least one method step from data and / or information on refill quantities of fluid, in particular coolant, stored over a period of time when the fluid delivery device was used.
  • the comparison table preferably comprises at least one pair of values from a negligibly small difference, in particular zero difference, of the operating performance tion and the comparative power and from a negligibly low fluid was in the measurement volume of the fluid delivery device, in particular a fluid level below the fluid level limit value.
  • the zero difference values for the difference by 0% with a deviation of a maximum of 25%, preferably a maximum of 10%, particularly preferably a maximum of 5% and very particularly preferably a maximum of 2.5%, of the greater value of the operating power and the Includes comparative performance.
  • the difference limit value is a value which corresponds to less than 50%, preferably less than 25%, very particularly preferably less than 10%, of the larger value of the operating power and the comparative power.
  • the optimum fluid level is a value of at least 50% of the respective volume.
  • the fluid level limit value is a value between the optimum fluid level and a negligibly low fluid level, in particular a value less than 80%, preferably less than 50%, particularly preferably less than 25%, of the measurement volume.
  • the comparison table preferably comprises a plurality of pairs of values from values of the difference, in particular from a difference threshold range, the operating performance and the comparison performance between the difference limit value and the zero difference and from values of the fluid level between a vanishingly low fluid level in the measuring volume and a fluid level within the fluid level tolerance around the fluid level optimum.
  • the zero difference, the difference limit value and the difference threshold range are in particular dependent on the parameters of the fluid delivery device such as the geometry of the measurement volume of the fluid delivery device, in particular the geometry of the total volume of the fluid circuit, the motor, the fluid, and thus also other environmental conditions such as pressure or the Temperature. It is conceivable that the values for the zero difference, for the difference limit value and for the difference threshold range for fluid delivery devices, in particular fluid delivery devices with standard sizes, for example for serial installation in motor vehicles, in particular from wear tests, are known.
  • the difference between the operating performance and the comparison performance is compared with the comparison table, in particular with an interpolation of the value pairs in the comparison table, and a fluid level, in particular a fluid level difference from the fluid level optimum and / or the fluid level limit value, is determined.
  • the interpolation can be an approximate function such as a polynomial interpolation or, for example, an approximation of the course of the difference between the operating power and the comparative power and the fluid level or the fluid level difference depending on the difference in the operating power and the comparative power from the fluid level and the amount of value pairs Be a polynomial regression.
  • a fluid level and / or a fluid level difference from the fluid level limit value is preferably determined from the difference between the comparison performance and the operating performance.
  • the at least one motor can be controlled for an advantageous shutdown in the event of dry running detection.
  • the at least one motor can be controlled for continued operation in an advantageously energy-saving manner in the absence of a dry run being detected.
  • a reaction signal in the form of an, in particular permanent, stop signal or a further drive signal for the at least one motor is preferably output by the control unit to the at least one motor.
  • the at least one motor is stopped as a function of a comparison of the difference between the operating power and the comparison power with the difference limit value and or continued to operate.
  • an acoustic, visual and / or tactile reaction signal is output as a warning signal, such as a display on a dashboard or on a steering wheel.
  • an acoustic, visual and / or tactile reaction signal such as a display on a dashboard or on a steering wheel
  • the reaction signal could include a display of the current level of fluid in the measurement volume of the fluid delivery device or a prognosis about when, which and how much fluid should be refilled.
  • a fluid delivery device in particular a coolant pump, is proposed with at least one motor and with at least one control unit which is provided to control the at least one motor for operation according to a method according to one of the preceding claims.
  • a “control unit” should in particular be understood to mean a control and / or regulating unit which is designed as a unit with at least one control electronics.
  • Control electronics is to be understood as meaning, in particular, a unit with a processor unit and with an internal memory unit and with an operating program stored in the internal memory unit.
  • a fluid delivery device can be formed which can advantageously independently detect a dry run.
  • a fluid conveying device can be designed which is advantageously designed to be durable, in particular to avoid wear, in particular due to dry running.
  • the storage unit is preferably provided to share stored data with a server module, in particular a central factory server module and / or workshop server module, in particular to monitor a dry-running diagnostic function.
  • the content of the storage unit can preferably be edited, such as copied and / or deleted.
  • a fluid delivery device can be achieved which can advantageously store past states. In this way it can advantageously be achieved that a diagnostic function and / or prognosis function can be implemented for the fluid delivery device.
  • the method according to the invention and / or the fluid delivery device according to the invention should not be restricted to the application and embodiment described above.
  • the method according to the invention and / or the fluid delivery device according to the invention can have a number differing from a number of individual elements, components and units as well as process steps mentioned herein in order to fulfill a functionality described herein.
  • values lying within the stated limits should also be deemed disclosed and can be used as required.
  • FIG. 1 shows a fluid delivery device according to the invention and a fluid circuit which is connected to the fluid delivery device
  • Figure 1 shows a fluid delivery device 10, in particular a coolant pump in a fluid circuit 18, for example as part of a motor vehicle air conditioning system, with at least one motor 12, with at least one storage unit 16 and with at least one control unit 14.
  • the fluid circuit 18, in which the fluid delivery device 10 is arranged comprises at least one fluid reservoir 46, in which fluid 40 is stored.
  • the fluid circuit 18 has at least one fluid line 44.
  • the fluid circuit 18 has at least one condenser unit 36 with a serpentine course of a fluid line 44 and a fan 38.
  • the fluid circuit 18 has at least one heat exchanger 42.
  • the fluid circuit 18 comprises at least one expansion valve 52.
  • the fluid circuit 18 comprises a total volume which can accommodate the fluid 40 and which is distributed over the fluid circuit 18.
  • the total volume of the fluid circuit 18 has a fill level, in particular a total fluid level optimum, for optimal operation. It is conceivable, for example, that the total volume of the fluid circuit 18 is filled with fluid 40 for optimal operation with a fill level, in particular a total fluid level optimum of 80%.
  • the total volume of the fluid circuit 18 allows a total fluid level tolerance for safe operation of all construction parts of the fluid circuit 18. For example, it is conceivable that the total volume of the fluid circuit 18, for safe operation of all components of the fluid circuit 18, in particular of the at least one motor 12, has a total fluid level tolerance of 40% of the total volume. mens allows.
  • the total volume of the fluid circuit 18 has a total fluid level limit value.
  • the total fluid level limit value corresponds to a fluid level which, if undershot, leads to unsafe operation, in particular wear-intensive operation, of the components of the fluid circuit 18. It is conceivable, for example, that the total volume has a total fluid level limit value of 40%, in particular of the total volume.
  • the fluid delivery device 10, in particular the coolant pump, in the fluid circuit 18, comprises at least one motor 12, in particular with a housing 50 in which a pump wheel 48 is arranged.
  • the fluid delivery device 10 is designed as a centrifugal pump with at least one motor 12, with a storage unit 16 and with a control unit 14.
  • the pump wheel 48 has several vanes 54. It is conceivable that the vanes 54 form a preferred direction of rotation, in particular the operating direction of the motor 12, for conveying fluid. It is conceivable that the impeller 48 experiences a smaller and / or greater resistance from the fluid 40 when the fluid is conveyed in the operating direction than when the impeller is rotating counter to the operating direction, in particular due to less fluid conveying, in particular with regard to the volume flow.
  • vanes 54 are designed free of a preferred direction of rotation and a preferred direction of rotation of the fluid delivery device 10 is formed by an internal geometry of the measurement volume in which the pump wheel 48 is arranged, such as the arrangement of the drain or that a preferred direction of rotation is formed by an arrangement of the fluid circuit 18, such as the expansion valve 52 in the fluid circuit 18.
  • the fluid delivery device 10 has a measuring volume which is enclosed in particular by the housing 50.
  • the measurement volume of the fluid delivery device 10 has a fluid level, in particular an optimum fluid level, for optimal operation. It is conceivable, for example, that the measurement volume was filled with fluid 40 for optimum operation, in particular a fluid level optimum of 80%.
  • the measurement volume allows a fluid level tolerance for reliable operation of the fluid delivery device 10, in particular the coolant pump.
  • the measurement volume allows a fluid level tolerance of 40% of the measurement volume for safe operation of the fluid delivery device 10, in particular the at least one motor 12.
  • the measuring volume of the fluid conveying Device 10 has a fluid level limit.
  • the fluid level limit value corresponds to a fluid level which, when undershot, leads to unsafe operation, in particular wear-intensive operation, of the components of the fluid delivery device 10. It is conceivable, for example, that the measurement volume has a fluid level limit value of 40%, in particular of the measurement volume.
  • the control unit 14 is provided to control the at least one motor 12 for operation, in particular for detecting a dry run of the at least one fluid delivery device 10.
  • FIG. 2 shows a schematic representation of a method 20 for operating at least one fluid delivery device 10, in particular a coolant pump, for detecting dry running of the at least one fluid delivery device 10.
  • the at least one motor 12 is switched on A defined comparison speed, such as approximately 10,000 rpm, is accelerated in a direction of rotation opposite to an operating direction of the at least one motor 12. It is conceivable that in at least one method step the defined speed is selected from a large number of possible speeds, in particular a range between a speed minimum, in particular 0.001 rpm, and a speed maximum, in particular a maximum possible speed of the motor 12.
  • the at least one motor 12 is operated with a direction of rotation opposite to an operating direction of the at least one motor 12.
  • the at least one motor 12 is initially operated with the direction of rotation opposite to the operating direction of the at least one motor 12 before operation with a direction of rotation in the operating direction.
  • the at least one motor 12 is braked from a defined comparison speed, such as 10,000 rpm, in particular to a standstill.
  • a voltage and / or a current intensity is measured at the at least one motor 12 at at least one, in particular predetermined, comparison speed in the direction of rotation opposite to the operating direction of the at least one motor 12. For example, in the measuring step 24 at a speed of
  • the at least one motor 12 is accelerated to a defined comparison speed, such as for example about 10,000 rpm, in one direction of rotation in the operating direction of the at least one motor 12.
  • a defined comparison speed such as for example about 10,000 rpm
  • the at least one motor 12 is operated with a direction of rotation in the operating direction of the at least one motor 12.
  • the at least one motor 12 is operated after operation with a direction of rotation opposite to the operating direction with the direction of rotation in the operating direction of the at least one motor 12.
  • the at least one motor 12 is braked from a defined comparison speed, such as 10,000 rpm, in particular to a standstill.
  • a voltage and / or a current intensity at the at least one motor 12 is measured at at least one, in particular predetermined, comparison speed in the direction of rotation in the operating direction of the at least one motor 12. For example, in the operational measuring step 28, at a speed of 10000 rpm in the direction of rotation in the operational direction of the at least one motor 12, a voltage and / or current intensity is measured at the at least one motor 12.
  • a comparative performance of the at least one motor 12 in a, in particular their predetermined, comparison speed in the direction of rotation opposite to the operating direction of the at least one motor 12 is calculated.
  • a comparative power of the at least one motor 12 at a, in particular predetermined, comparative speed in the direction of rotation opposite to the operating direction of the at least one motor 12 is calculated from the measured voltage and / or current intensity, in particular from the control unit 14.
  • a comparison performance of the at least one motor 12 at a comparison speed of 10,000 rpm in the direction of rotation opposite to the operating direction of the at least one motor 12 is calculated from the measured voltage and / or current intensity, in particular from the control unit 14.
  • an operating power of the at least one motor 12 is calculated at a, in particular predetermined, comparison speed in the direction of rotation in the operating direction of the at least one motor 12, in particular by the control unit 14.
  • a comparison power of the at least one motor 12 is calculated at a, in particular special predetermined, comparison speed in the direction of rotation in the operating direction of the at least one motor 12 from the measured voltage and / or current strength, in particular by the control unit 14
  • the operating performance and the comparison performance are calculated, in particular by the control unit 14.
  • a comparison power is obtained at a, in particular predetermined, comparison speed in the direction of rotation opposite to the operating direction of the at least one motor 12 with an operating power at, in particular, a value with a comparison speed corresponding, operating speed in one direction of rotation direction compared in the operating direction.
  • a comparison parameter in particular a difference between the operating performance and the comparison performance, is calculated. For example, in at least one method step, in particular the comparison step 30, a difference between the operating power and the comparison power of 0 W or 150 W, in particular by the control unit 14, is calculated.
  • the comparison parameter in particular the difference between the operating performance and the comparison performance, is compared with a difference limit value, in particular by the control unit 14. It is conceivable that the difference limit value corresponds to the fluid level limit value. It is conceivable that the difference limit value corresponds to a value of 100 W and corresponds to the fluid level limit value. In at least one method step, in particular the comparison step 30, either the comparison parameter falls below the difference limit value, in particular the difference between the operating performance and the comparison performance, or compliance with the difference limit value using the comparison parameter, in particular the difference between the operating performance and the comparison performance.
  • the differential limit value corresponds to a fluid level at which reliable operation of the fluid delivery device 10, in particular the coolant pump, is ensured. It is conceivable that falling below the differential limit value corresponds to a fluid level at which safe operation of the fluid delivery device 10, in particular the coolant pump, is excluded. For example, a difference of 0 W falls below the difference limit value of 100 W and reliable operation of the fluid delivery device 10, in particular a coolant pump, is excluded because the fluid level is too low. For example, a difference of 150 W keeps the difference limit value of 100 W and reliable operation of the fluid delivery device 10, in particular the coolant pump, is ensured due to a sufficient fluid level. It is conceivable that different fluid levels can be correlated and / or stored and / or compared with values for the difference between the operating performance and the comparison performance at least below the difference limit value and above a negligibly small difference, in particular in a difference threshold range.
  • At least the comparison parameter is saved for each measurement. It is conceivable that a comparison parameter that changes over a period of time, in particular decreasing, is determined, in particular a difference between the operating performance and the comparison performance. It is conceivable that the comparison parameter, in particular the difference between the operating performance and the comparison performance, is compared with earlier measurements in the at least one comparison step 30.
  • a prognosis function and / or diagnostic function in particular for a fluid level, in particular coolant level, and / or a fluid level difference, in particular coolant level difference, from the course of the stored values for the comparison parameters, in particular for the difference between the operating performance and the comparison performance , from the fluid level optimum and / or fluid level limit value, in particular in the total volume of the fluid circuit 18, can be achieved.
  • the course of the stored values for the comparison parameter, in particular the difference between the operating performance and the comparison performance is fitted in at least one method step, in particular the comparison step 30, in order to achieve a prognosis function and / or diagnosis function.
  • data to be stored on the memory unit 16 the data for example having a comparison table with value pairs from a difference between the operating performance and the comparison performance and from a fluid level corresponding thereto.
  • the fluid level difference, in particular the coolant level difference, of the The fluid level, in particular the coolant level, is determined from a fluid level limit value, in particular the coolant level limit value, in the measurement volume of the fluid delivery device 10, in particular the total volume of the fluid circuit 18.
  • a control of the at least one motor 12 is dependent on a performance comparison of a comparative power in the direction of rotation opposite to the operating direction of the at least one motor 12 with an operating power in a direction of rotation in the operating direction of the at least one motor 12 performed.
  • the at least one motor 12 is stopped, in particular when the performance comparison results in a comparison parameter, in particular a difference, below the difference limit value, in particular a zero difference.
  • a reaction signal in particular a warning signal
  • the reaction signal is designed as a stop signal from the control unit 14 to the motor 12.
  • the reaction signal, in particular the warning signal can be a visual, acoustic or tactile signal in addition to the stop signal from the control unit 14 to the motor 12, which is displayed by a display unit in the stop step 32. It is conceivable that in stop step 32 a current fluid level or a fluid level difference or a prognosis of the fluid level or the fluid level difference is output.
  • a reaction signal in particular a warning signal, is output depending on a performance comparison of a comparative power in the direction of rotation opposite to the operating direction of the at least one motor 12 with an operating power in a direction of rotation in the operating direction of the at least one motor 12 ben.
  • the at least one motor 12 continues to operate, in particular when the Performance comparison results in a comparison parameter, in particular a difference, from at least the difference limit value.
  • a reaction signal in particular a warning signal, is generated depending on a performance comparison of a comparative power in the direction of rotation opposite to the operating direction of the at least one motor 12 with an operating power in a direction of rotation in the operating direction of the at least one Motor 12 issued.
  • the reaction signal is formed as an operating signal from the control unit 14 to the motor 12.
  • the reaction signal in particular a warning signal, can be a visual, acoustic or tactile signal in addition to the operating signal from the control unit 14 to the motor 12, which is displayed by a display unit in the normal operating step 34. It is conceivable that a current fluid level or a fluid level difference or a forecast of the fluid level or the fluid level difference is output in the normal operating step 34.
  • values for the comparative power and / or operating power at different speeds are stored on the memory unit 16. It is conceivable that in at least one method step a dry run of the fluid delivery device 10 is carried out by comparing the operating power and / or comparative power with stored values of the operating power and / or comparative power at defined speeds, in particular in addition to comparing the difference between the Operating power and the comparative power with a difference limit

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

L'invention concerne un procédé de fonctionnement d'au moins un dispositif de transport de fluide (10), en particulier d'une pompe de refroidissement, pour détecter un fonctionnement à sec dudit dispositif de transport de fluide (10), le dispositif de transport de fluide (10) comprenant au moins un moteur (12). Selon l'invention, dans au moins une étape de procédé, ledit moteur (12) est opéré avec une direction de rotation opposée à une direction de fonctionnement dudit moteur (12).
PCT/EP2020/064094 2019-06-05 2020-05-20 Procédé de fonctionnement d'au moins un dispositif de transport de fluide Ceased WO2020244927A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019208148.7 2019-06-05
DE102019208148.7A DE102019208148A1 (de) 2019-06-05 2019-06-05 Verfahren zu einem Betrieb zumindest einer Fluidfördervorrichtung

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WO2020244927A1 true WO2020244927A1 (fr) 2020-12-10

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WO2023020928A1 (fr) * 2021-08-17 2023-02-23 Grundfos Holding A/S Procédé de détermination d'un débit à travers une pompe

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WO2009006927A1 (fr) * 2007-07-11 2009-01-15 Siemens Aktiengesellschaft Procédé en vue d'éviter le fonctionnement à sec d'une pompe centrifuge, module de surveillance de pompe et système
WO2015192955A1 (fr) * 2014-06-18 2015-12-23 Wilo Se Procédé permettant d'identifier une marche à sec d'une pompe centrifuge
EP3067564A1 (fr) * 2015-03-09 2016-09-14 Grundfos Holding A/S Groupe motopompe de circulation
DE102017210885A1 (de) * 2017-06-28 2019-01-03 Robert Bosch Gmbh Verfahren zu einer Erkennung eines Trockenlaufs einer Pumpenvorrichtung und/oder zu einer Entgasung eines Pumpenraums einer Pumpenvorrichtung

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
WO2009006927A1 (fr) * 2007-07-11 2009-01-15 Siemens Aktiengesellschaft Procédé en vue d'éviter le fonctionnement à sec d'une pompe centrifuge, module de surveillance de pompe et système
WO2015192955A1 (fr) * 2014-06-18 2015-12-23 Wilo Se Procédé permettant d'identifier une marche à sec d'une pompe centrifuge
EP3067564A1 (fr) * 2015-03-09 2016-09-14 Grundfos Holding A/S Groupe motopompe de circulation
DE102017210885A1 (de) * 2017-06-28 2019-01-03 Robert Bosch Gmbh Verfahren zu einer Erkennung eines Trockenlaufs einer Pumpenvorrichtung und/oder zu einer Entgasung eines Pumpenraums einer Pumpenvorrichtung

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