EP3791073A1 - VERFAHREN ZUR ERMITTLUNG EINER FLUIDFÖRDERKENNGRÖßE - Google Patents
VERFAHREN ZUR ERMITTLUNG EINER FLUIDFÖRDERKENNGRÖßEInfo
- Publication number
- EP3791073A1 EP3791073A1 EP19739874.6A EP19739874A EP3791073A1 EP 3791073 A1 EP3791073 A1 EP 3791073A1 EP 19739874 A EP19739874 A EP 19739874A EP 3791073 A1 EP3791073 A1 EP 3791073A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid delivery
- information
- determining
- delivery device
- volume flow
- 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
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005284 excitation Effects 0.000 claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000005265 energy consumption Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000036962 time dependent Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000001845 vibrational spectrum Methods 0.000 description 1
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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/304—Spool rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/306—Mass flow
- F05D2270/3061—Mass flow of the working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/331—Mechanical loads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/334—Vibration measurements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/335—Output power or torque
Definitions
- the invention relates to a method for determining a fluid delivery parameter, a fluid delivery device, in particular for determining a volume flow.
- the invention further relates to a device for determining a fluid delivery characteristic, a fluid delivery device, in particular for determining a volume flow.
- the invention further relates to a fluid delivery system.
- the present invention is generally applicable to any fluid delivery device, the present invention is described with respect to a fan.
- Fans or fans are used in a variety of ways, for example in the field of ventilation and air conditioning technology.
- Knowledge of the current operating status of the fan is required for efficient operation and for adaptation to the operating conditions of the fan.
- a characteristic curve which reflects the performance of the centrifugal fan over the conveyed volume flow, falls on both sides from the maximum load operating point. H. to lower and higher volume flows. This results in two operating points that are indistinguishable from one another with regard to the volume flow with known fan power. These can be determined, for example, on the basis of the installation situation of the fan together with control data for the fan in a very complex manner, in order then to be able to draw conclusions about the volume flow.
- the present invention achieves the objects with a method for determining a fluid delivery parameter of a fluid delivery device, in particular for determining a volume flow, comprising the steps
- the present invention achieves the objects with a device for determining a fluid delivery characteristic of a fluid delivery device, in particular for determining a volume flow, comprising a sensor device for determining excitation information for mechanical excitation of at least one fluid delivery element of the fluid device in at least one spatial direction,
- a provision device for providing operating information comprising at least one value of an operating variable of the fluid delivery device, and
- a computing unit for analyzing the information provided and determined and for determining the fluid delivery parameter, in particular the volume flow of the fluid delivery device, based on the analyzed information.
- the present invention achieves the objects with a fluid delivery system, comprising a fluid delivery device, in particular in the form of a fan, with at least one fluid delivery element, in particular in the form of an impeller, and
- a device for determining a fluid delivery characteristic of the fluid delivery device according to one of claims 9-12.
- One of the advantages achieved with this is that a clear determination of an operating or working point in relation to the volume flow within the fluid delivery device is made possible without additional complex measurements by separate measuring devices. Another advantage is that such information can also be made available to a user or operator of the fluid delivery device and can then be used by the latter.
- the determined fluid delivery parameter can be used in a flexible manner for controlling and regulating the fluid delivery device and / or also for calculating, for example the service life of the fluid delivery device or the like.
- one or more vibrations of the fluid delivery element are provided as the size of the mechanical excitation.
- an amplitude and / or a change in an amplitude of the size of the mechanical excitation is measured.
- the advantage of this is that values for the magnitude of the mechanical vibration can be determined or measured in a simple manner.
- the operational information is evaluated on the basis of a stored and / or previously determined characteristic field for operational information. It can be linked in a simple and reliable manner on the basis of the characteristic diagram, for example the speed of an impeller of a fan, with the power and the volume flow of a fan.
- the fluid delivery device is provided in the form of a fan, in particular a radial fan, and the fluid delivery element is provided in the form of an impeller of the fan.
- a fluid delivery device can thus be provided in a simple and inexpensive manner.
- performance information of the fluid delivery device in particular current, voltage and / or energy consumption and / or a rotational speed of the fluid delivery device, is provided as operating information.
- performance data can be used as operating information, which is generally already available as a signal. This eliminates the need for time-consuming separate recording of these variables. At the same time, the accuracy in determining the fluid delivery parameter is improved.
- the information is determined in a time-dependent manner, in particular in which a time course of the respective information is determined.
- the advantage of this is that small fluctuations in the temporal course of operating variables, for example the speed of an impeller, etc., can be detected and, if necessary, averaged out, which improves the accuracy of the assignment to an operating point and thus the determination of the fluid delivery parameter.
- the values are processed before the analysis, in particular by means of a Fast Fourier transformation.
- the advantage of this is that the analysis of the values can be improved, which improves the accuracy in determining the fluid delivery parameter and reduces the computation and storage effort.
- a control unit is arranged, which is designed to regulate the fluid delivery device on the basis of the determined fluid delivery parameter. In this way, a particularly stable and continuous operation of the fluid delivery device is made possible.
- the sensor device has a vibration sensor and / or the provision device is designed to provide information from a control device of the fluid delivery device.
- the advantage of this is the simple provision of information about a mechanical excitation and other operating variables.
- the computing unit comprises a memory in which at least one map for one or more operating variables of the fluid delivery device is stored and which is designed to provide the at least one map of the fluid delivery device of the computing unit for determining the fluid delivery parameter.
- Figure 1 shows in schematic form a method according to an embodiment of the present invention
- Figure 2 is a map of a radial fan according to an embodiment of the present invention.
- Figure 1 shows in schematic form a method according to an embodiment of the present invention.
- vibration information 4a and performance information 4b are provided and, based on speed information 4c, for example from an impeller of a fan, this is compared with a characteristic diagram 3b.
- the information 4a, 4b, 4c are then used to determine a characteristic curve 3a, from which the volume flow 2 then results.
- a characteristic 3a is selected from the known characteristic 3b of a radial fan.
- Information about the power 4b of the radial fan or, associated therewith, the torque requirement of the impeller of the radial fan is known from a control unit of the radial fan.
- vibration excitation vibration information 4a
- volume flow known in relation to the impeller
- Figure 2 shows a map of a radial fan according to an embodiment of the present invention.
- the characteristic diagram of a radial fan with backward-curved blades is shown in detail in FIG.
- the power 11 of the radial fan is plotted against the volume flow 10 for different speeds m, r ⁇ 2, ...
- the characteristic curve for each speed (m, r ⁇ 2, %) starting from the respective maximum load point drops on both sides, ie to lower and higher volume flows.
- This results in two operating points AP1 and AP2 which are indistinguishable with respect to the volume flow, for each known motor or fan output.
- the difference results, among other things, from the system resistance and thus the installation situation of the radial fan.
- FIG. 3 shows oscillation characteristics for various operating points of the radial fan according to FIG. 2.
- FIG. 3 This results from the interaction of impeller and volume flow, which is a stimulating mass.
- a characteristic of the vibration is obtained which correlates with the volume throughput of the impeller of the radial fan.
- the time-dependent signal 13 of the vibration sensor for the two operating points AP1, AP2 can be evaluated with regard to its amplitude or the signal fluctuation 15.
- a signal analysis can be carried out in order to identify characteristic frequency ranges 14 with signal peaks 16 for the two operating points AP1, AP2.
- the vibration characteristic can then be correlated with the volume flow.
- At least one of the embodiments of the present invention enables or provides at least one of the following features and / or at least one of the following advantages:
- a fan with a device for determining its operating status with regard to its output and speed and a sensor for Analysis of its mechanical vibration behavior.
- Vibration spectrum for creating a defined operating point with regard to volume flow or pressure difference taking into account known characteristic maps of the fan with regard to the speed-dependent output and volume flow.
- measured path changes x, y, z or after their evaluation, e.g. by Fast Fourier transform or other signal evaluation, using other known quantities, e.g. Use flows, power etc. from a control unit as information and assign a mass or volume flow.
- volume flow within the fan motor or its control unit without additional measuring devices, in particular volume flow, pressure or the like.
- volume flow as a user-side output parameter.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI201930429T SI3791073T1 (sl) | 2018-07-17 | 2019-06-12 | Postopek za določanje parametra za dovajanje tekočine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018211869.8A DE102018211869A1 (de) | 2018-07-17 | 2018-07-17 | Verfahren zur Ermittlung einer Fluidförderkenngröße |
PCT/DE2019/200063 WO2020015799A1 (de) | 2018-07-17 | 2019-06-12 | VERFAHREN ZUR ERMITTLUNG EINER FLUIDFÖRDERKENNGRÖßE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3791073A1 true EP3791073A1 (de) | 2021-03-17 |
EP3791073B1 EP3791073B1 (de) | 2022-11-09 |
Family
ID=67296916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19739874.6A Active EP3791073B1 (de) | 2018-07-17 | 2019-06-12 | Verfahren zur ermittlung einer fluidförderkenngrösse |
Country Status (7)
Country | Link |
---|---|
US (1) | US11486405B2 (de) |
EP (1) | EP3791073B1 (de) |
CN (1) | CN112384702B (de) |
DE (1) | DE102018211869A1 (de) |
ES (1) | ES2937984T3 (de) |
SI (1) | SI3791073T1 (de) |
WO (1) | WO2020015799A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020118251A1 (de) * | 2020-07-10 | 2022-01-13 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Verfahren und Ventilatorsystem zur Ermittlung des Zustands eines Filters in einer Ventilatoreinheit |
US20220316744A1 (en) * | 2021-04-06 | 2022-10-06 | Regal Beloit America, Inc. | Systems and methods for controlling an electric blower motor in a fluid moving system |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60201097A (ja) * | 1984-03-26 | 1985-10-11 | Hitachi Ltd | 流量測定装置 |
DE19851523C1 (de) * | 1998-11-09 | 2000-05-18 | Gauting Gmbh Apparatebau | Gebläse |
DE102009022107A1 (de) * | 2009-05-20 | 2010-11-25 | Ksb Ag | Verfahren und Vorrichtung zur Betriebspunktbestimmung einer Arbeitsmaschine |
DE102011100092B4 (de) * | 2011-04-29 | 2013-04-18 | Krohne Messtechnik Gmbh | Verfahren zum Betreiben eines Resonanzmesssystems |
JP5871157B2 (ja) | 2011-10-03 | 2016-03-01 | 株式会社Ihi | 遠心圧縮設備のサージング防止方法 |
US9624936B2 (en) * | 2012-05-16 | 2017-04-18 | Compressor Controls Corporation | Turbocompressor antisurge control by vibration monitoring |
EP3359820B1 (de) * | 2015-10-07 | 2019-12-04 | ABB Schweiz AG | Hochverfügbarer verdichter für ein gaskompressionssystem |
DE102016115617A1 (de) * | 2016-08-23 | 2018-03-01 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Verfahren zur Volumenstromregelung eines Ventilators |
CN107035712B (zh) * | 2017-04-20 | 2018-07-10 | 章丘丰源机械有限公司 | 一种罗茨鼓风机智能试机*** |
EP3748162A1 (de) * | 2017-12-28 | 2020-12-09 | Ebara Corporation | Pumpvorrichtung, testbetriebsverfahren der pumpvorrichtung, motoranordnung und verfahren zur identifizierung einer anormalen vibration einer motoranordnung |
-
2018
- 2018-07-17 DE DE102018211869.8A patent/DE102018211869A1/de active Pending
-
2019
- 2019-06-12 US US17/261,108 patent/US11486405B2/en active Active
- 2019-06-12 SI SI201930429T patent/SI3791073T1/sl unknown
- 2019-06-12 CN CN201980040852.4A patent/CN112384702B/zh active Active
- 2019-06-12 ES ES19739874T patent/ES2937984T3/es active Active
- 2019-06-12 WO PCT/DE2019/200063 patent/WO2020015799A1/de unknown
- 2019-06-12 EP EP19739874.6A patent/EP3791073B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
US20210317838A1 (en) | 2021-10-14 |
WO2020015799A1 (de) | 2020-01-23 |
DE102018211869A1 (de) | 2020-01-23 |
ES2937984T3 (es) | 2023-04-03 |
CN112384702A (zh) | 2021-02-19 |
CN112384702B (zh) | 2023-05-23 |
EP3791073B1 (de) | 2022-11-09 |
US11486405B2 (en) | 2022-11-01 |
SI3791073T1 (sl) | 2023-02-28 |
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