WO2002075156A1 - Pressure generator for flowing media - Google Patents

Pressure generator for flowing media Download PDF

Info

Publication number
WO2002075156A1
WO2002075156A1 PCT/DE2002/000870 DE0200870W WO02075156A1 WO 2002075156 A1 WO2002075156 A1 WO 2002075156A1 DE 0200870 W DE0200870 W DE 0200870W WO 02075156 A1 WO02075156 A1 WO 02075156A1
Authority
WO
WIPO (PCT)
Prior art keywords
converter
pressure generator
generator according
pressure
compressor
Prior art date
Application number
PCT/DE2002/000870
Other languages
German (de)
French (fr)
Inventor
Rudi Dittmar
Heiko Richter
Matthias Warmuth
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to DE20220578U priority Critical patent/DE20220578U1/en
Publication of WO2002075156A1 publication Critical patent/WO2002075156A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
    • 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
    • F04B49/20—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 by changing the driving speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—Regenerative pumps
    • 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
    • F04D27/02—Surge control
    • F04D27/0261—Surge control by varying driving speed
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to a pressure generator for flowing media, in which a compressor can be driven by means of a speed-controllable motor, in particular via a frequency converter.
  • Such pressure generators are used to transport flowing media, be they gases or liquids, which can also be used to transport solid mass particles.
  • process parameters such as speed, volume flows, pressures or mass flows constant.
  • this must also be independent of factors influencing the process, e.g. Filling level, bypass lines or throttling losses connected in the pneumatic conveying system.
  • the pressure generators are oversized and then throttled by throttling elements to cover all operating states. However, this results in flow velocities that lead to high wear on the pipes and hoses and also to high energy loss.
  • the object of the invention is to design a pressure generator of the type mentioned at the outset in such a way that an optimal adaptation is possible in particular with regard to the volume flow.
  • this object is achieved for a pressure generator of the type mentioned at the outset in that the flow speed and thus, in the case of a known cross section, the volume flow can be detected by means of a sensor with transmitter and converter and that the speed of the motor can be regulated by the output signal of the converter.
  • the throttling measures customary up to now can thus be completely dispensed with.
  • a first advantageous embodiment of the invention is characterized in that the transmitter is mounted in the nozzle area of the compressor, in particular on the suction nozzle.
  • the volume flows can be recorded relatively easily and precisely.
  • the relatively temperature-sensitive converter can be protected against excessively high temperature influences. Nevertheless, it is of course possible to take additional temperature compensation measures for the highest accuracy requirements.
  • differential pressure sensor is advantageously provided as the sensor results in a technically proven and relatively simple embodiment of the invention.
  • measurements can also be carried out with the help of flow sensors that directly measure the pipe speed or the volume flow. Examples of this would be impeller measuring probes, hot wire probes, vortex counters, laminar flow elements and the like. In any case, however, attention should be paid to compliance with the degree of protection.
  • a differential pressure sensor In the event that a differential pressure sensor is provided as the sensor, it proves to be advantageous that an input of the differential pressure sensor can be acted upon by the pressure of the surroundings, so that the converter can also generate a pressure-regulating or limiting output signal. Such a switchover to the ambient conditions can take place by means of separate switching elements. In principle, another complete sensor could also be used.
  • a reliable design of the pressure generator is characterized in that a vacuum pump, a side channel blower, a radial compressor, a roots blower, a screw compressor or a similar or similarly acting fluid machine is provided as or instead of a compressor.
  • the acquired process signals may be forwarded to further control and display devices, in particular to diagnostic devices.
  • the illustration shows in perspective a compressor V, which is attached as a side channel blower to an electric motor M with a frequency converter FU for influencing the speed.
  • the inflow and outflow for the medium flowing through the compressor V takes place via silencers S1 and S2, which are further connected for the sake of clarity, lines not shown.
  • a flange F is used to fasten the entire assembly.
  • Essential for the present invention is the use of a pressure sensor, in the example a differential pressure sensor. This consists of a throttle orifice attached near the silencer S1, in front of or behind which two pressure lines D1 and D2 receive the resulting pressure and pass it on to a pressure converter DW. This forms an electrical output signal that acts directly or indirectly via an converter as an analog signal on an input of the frequency converter FU. If a converter is to be protected against environmental influences, it proves to be advantageous to accommodate it in the interior of the frequency converter FU.
  • the speed of the medium can be inferred directly, and since the product of the pipe speed and pipe area is proportional to the volume flow, the volume pressure can also be determined using the differential pressure measurement.
  • a manipulated variable for regulating the mass flow could also be derived from measured hydraulic and thermodynamic parameters, which would also affect the speed of the engine.
  • an influence on the volume flow or flow velocity or mass flow which is largely insensitive to contamination and temperature, is integrated in the pressure generator.
  • This can also include the constant pressure function. This enables the pressure generator to be optimally adapted to the respective work process.

Abstract

The invention relates to a pressure generator for flowing media, in which a compressor (V) is driven by means of a motor whose speed can be controlled. The flow speed in the compressor (V) is measured using sensors and control signals for the motor speed are formed therefrom. The operation of the compressor can thus be optimised (V) and conventional throttle devices are not required.

Description

Beschreibungdescription
Druckerzeuger für strömende MedienPressure generator for flowing media
Die Erfindung bezieht sich auf einen Druckerzeuger für strömende Medien, bei dem mittels eines - insbesondere über einen Frequenzumrichter - drehzahlsteuerbaren Motors ein Verdichter antreibbar ist.The invention relates to a pressure generator for flowing media, in which a compressor can be driven by means of a speed-controllable motor, in particular via a frequency converter.
Solche Druckerzeuger dienen zum Transport von strömenden Medien, seien es Gase oder Flüssigkeiten, die dabei auch zum Transport von festen Massenteilchen einsetzbar sind. Bei vielen dieser technologischen Anwendungen ist es erforderlich, Prozessparameter, wie beispielsweise Geschwindigkeit, Volu- enströme, Drucke oder Massenströme einzustellen oder konstant zu halten. Dies muss aber auch unabhängig von prozess- beeinflussenden Faktoren, z.B. Füllgrad, in der pneumatischen Förderung zugeschalteten Bypassleitungen oder Drosselverlusten, sichergestellt sein. Dazu werden heutzutage die Drucker- zeuger überdimensioniert und dann durch Drosselelemente gedrosselt, um alle Betriebszustände abzudecken. Damit ergeben sich jedoch Strömungsgeschwindigkeiten, die zu hohem Verschleiß der Rohre und Schläuche und auch zu hohem Energieverlust führen.Such pressure generators are used to transport flowing media, be they gases or liquids, which can also be used to transport solid mass particles. For many of these technological applications it is necessary to set or keep process parameters such as speed, volume flows, pressures or mass flows constant. However, this must also be independent of factors influencing the process, e.g. Filling level, bypass lines or throttling losses connected in the pneumatic conveying system. Nowadays, the pressure generators are oversized and then throttled by throttling elements to cover all operating states. However, this results in flow velocities that lead to high wear on the pipes and hoses and also to high energy loss.
Aufgabe der Erfindung ist es, einen Druckerzeuger der eingangs genannten Art so auszubilden, dass insbesondere hinsichtlich des Volumenstroms eine optimale Anpassung möglich ist .The object of the invention is to design a pressure generator of the type mentioned at the outset in such a way that an optimal adaptation is possible in particular with regard to the volume flow.
Gemäß der Erfindung wird diese Aufgabe für einen Druckerzeuger der eingangs genannten Art dadurch gelöst, dass die Strömungsgeschwindigkeit und damit bei bekanntem Querschnitt auch der Volumenstrom mittels eines Sensors mit Geber und Wandler erfassbar ist und dass durch das Ausgangssignal des Wandlers die Drehzahl des Motors regelbar ist. Auf die bislang üblichen Drosselmaßnahmen kann damit völlig verzichtet werden. Eine erste vorteilhafte Ausbildung der Erfindung ist dadurch gekennzeichnet, dass der Geber im Stutzenbereich des Verdichters, insbesondere am Saugstutzen angebracht ist. Hier lassen sich die Volumenströme relativ einfach und genau erfassen.According to the invention, this object is achieved for a pressure generator of the type mentioned at the outset in that the flow speed and thus, in the case of a known cross section, the volume flow can be detected by means of a sensor with transmitter and converter and that the speed of the motor can be regulated by the output signal of the converter. The throttling measures customary up to now can thus be completely dispensed with. A first advantageous embodiment of the invention is characterized in that the transmitter is mounted in the nozzle area of the compressor, in particular on the suction nozzle. Here, the volume flows can be recorded relatively easily and precisely.
Dadurch, dass der Wandler im Kühlluftstrom des Motors positioniert ist und dass Geber und Wandler über Druckleitungen miteinander verbunden sind, kann der relativ temperaturempfindliche Wandler vor allzu hohen Temperaturbeeinflussungen geschützt werden. Dessen ungeachtet ist es natürlich möglich, zusätzlich Temperaturkompensationsmaßnahmen für höchste Genauigkeitserfordernisse vorzunehmen.Due to the fact that the converter is positioned in the cooling air flow of the engine and that the transmitter and converter are connected to one another via pressure lines, the relatively temperature-sensitive converter can be protected against excessively high temperature influences. Nevertheless, it is of course possible to take additional temperature compensation measures for the highest accuracy requirements.
Dadurch, dass als Sensor vorteilhaft ein Differenzdrucksensor vorgesehen ist, ergibt sich eine technisch bewährte und relativ einfache Ausbildung der Erfindung. Selbstverständlich können auch Messungen mit Hilfe von Strömungssensoren, die direkt die Rohrgeschwindigkeit oder den Volumenstrom messen, vorgenommen werden. Beispiele hierzu wären Flügelradmessson- den, Hitzdrahtsonden, Wirbelzähler, Laminarflow-Elemente und ähnliches. In jedem Fall sollte jedoch auf die Einhaltung der Schutzart geachtet werden.The fact that a differential pressure sensor is advantageously provided as the sensor results in a technically proven and relatively simple embodiment of the invention. Of course, measurements can also be carried out with the help of flow sensors that directly measure the pipe speed or the volume flow. Examples of this would be impeller measuring probes, hot wire probes, vortex counters, laminar flow elements and the like. In any case, however, attention should be paid to compliance with the degree of protection.
Für den Fall, dass als Sensor ein Differenzdrucksensor vorge- sehen ist, erweist es sich als vorteilhaft, dass ein Eingang des Differenzdrucksensors mit dem Druck der Umgebung beaufschlagbar ist, so dass durch den Wandler auch ein druckregelndes bzw. begrenzendes Ausgangssignal generierbar ist. Ein derartiges Umschalten auf die Umgebungsverhältnisse kann durch gesonderte Schaltelemente erfolgen. Prinzipiell könnte aber auch ein weiterer kompletter Sensor zum Einsatz kommen.In the event that a differential pressure sensor is provided as the sensor, it proves to be advantageous that an input of the differential pressure sensor can be acted upon by the pressure of the surroundings, so that the converter can also generate a pressure-regulating or limiting output signal. Such a switchover to the ambient conditions can take place by means of separate switching elements. In principle, another complete sensor could also be used.
Ebenso wäre es auch denkbar, dass aus hydraulischen oder thermodynamischen Zusatzparametern auf den Massestrom schließbar ist, der über die Drehzahlregelung an den jeweiligen technischen Prozess optimal anpassbar ist. Eine zuverlässige Ausbildung des Druckerzeugers ist dadurch gekennzeichnet, dass als oder statt eines Verdichters eine Vakuumpumpe, ein Seitenkanalgebläse, ein Radialkompressor, ein Rootsgebläse, ein Schraubenverdichter oder eine ähnliche bzw. ähnlich wirkende Strömungsmaschine vorgesehen ist.It would also be conceivable that hydraulic or thermodynamic additional parameters can be used to infer the mass flow, which can be optimally adapted to the respective technical process via the speed control. A reliable design of the pressure generator is characterized in that a vacuum pump, a side channel blower, a radial compressor, a roots blower, a screw compressor or a similar or similarly acting fluid machine is provided as or instead of a compressor.
Dadurch, dass die Wandlersignale über einen Umsetzer auf einen Analog-Eingang für Drehzahlsollwerte des Motors geschaltet sind, ergibt sich eine relativ einfache Schaltungskette, die noch dadurch konstruktiv günstig gestaltet wird, wenn der Umsetzer baulich mit dem Frequenzumrichter vereinigt oder kombiniert ist.The fact that the converter signals are connected via a converter to an analog input for speed setpoints of the motor results in a relatively simple circuit chain, which is also structurally favorable if the converter is structurally combined or combined with the frequency converter.
Ferner ist es auch möglich, dass die erfassten Prozesssignale an weitere Einrichtungen zur Steuerung und Anzeige, insbesondere an Diagnoseeinrichtungen, weiterleitbar sind.Furthermore, it is also possible for the acquired process signals to be forwarded to further control and display devices, in particular to diagnostic devices.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher erläutert.An embodiment of the invention is shown in the drawing and is explained in more detail below.
Die Darstellung zeigt perspektivisch einen Verdichter V, der als Seitenkanalgebläse an einen elektrischen Motor M mit einem Frequenzumrichter FU zur Drehzahlbeeinflussung angesetzt ist. Die Zu- und Abströmung für das durch den Verdichter V strömende Medium erfolgt über Schalldämpfer Sl und S2, die im weiteren an der Übersichtlichkeit halber nicht gezeigte Leitungen angeschlossen sind. Zum Befestigen des gesamten Aggregates dient ein Flansch F. Wesentlich für die vorliegende Erfindung ist der Einsatz eines Drucksensors, im Beispiel eines Differenzdrucksensors. Dieser besteht aus einer nahe dem Schalldämpfer Sl angebrachten Drosselblende, vor der bzw. hinter welcher zwei Druckleitungen Dl bzw. D2 den resultierenden Druck aufnehmen und an einen Druckwandler DW weiterleiten. Dieser bildet daraus ein elektrisches Ausgangssignal, das direkt oder indirekt über einen Umsetzer als Analogsignal auf einen Eingang des Frequenzumrichters FU einwirkt. Sofern ein Umsetzer vor Umgebungseinflüssen zu schützen ist, erweist es sich als vorteilhaft, diesen im Innenraum des Frequenzumrichters FU unterzubringen.The illustration shows in perspective a compressor V, which is attached as a side channel blower to an electric motor M with a frequency converter FU for influencing the speed. The inflow and outflow for the medium flowing through the compressor V takes place via silencers S1 and S2, which are further connected for the sake of clarity, lines not shown. A flange F is used to fasten the entire assembly. Essential for the present invention is the use of a pressure sensor, in the example a differential pressure sensor. This consists of a throttle orifice attached near the silencer S1, in front of or behind which two pressure lines D1 and D2 receive the resulting pressure and pass it on to a pressure converter DW. This forms an electrical output signal that acts directly or indirectly via an converter as an analog signal on an input of the frequency converter FU. If a converter is to be protected against environmental influences, it proves to be advantageous to accommodate it in the interior of the frequency converter FU.
Da die Wurzel des Differenzdrucks proportional der Geschwindigkeit im untersuchten Rohrabschnitt ist, kann direkt auf die Geschwindigkeit des Mediums geschlossen werden, und da das Produkt von Rohrgeschwindigkeit und Rohrfläche proportional dem Volumenstrom ist, kann mit Hilfe der Differenzdruck- messung auch auf den Volumenstrom geschlossen werden. Erweitert könnte aus gemessenen hydraulischen und ther odynamischen Parametern auch eine Stellgröße zur Regelung des Massenstroms abgeleitet werden, wodurch ebenfalls die Drehzahl des Motors zu beeinflussen wäre.Since the root of the differential pressure is proportional to the speed in the pipe section being examined, the speed of the medium can be inferred directly, and since the product of the pipe speed and pipe area is proportional to the volume flow, the volume pressure can also be determined using the differential pressure measurement. A manipulated variable for regulating the mass flow could also be derived from measured hydraulic and thermodynamic parameters, which would also affect the speed of the engine.
Durch die geschilderten Maßnahmen wird im Druckerzeuger eine gegen Verschmutzung und Temperatur weitgehend unempfindliche Beeinflussung von Volumenstrom bzw. Strömungsgeschwindigkeit bzw. Massenstrom integriert. Dies kann auch die Funktion kon- stanter Druck beinhalten. Dadurch wird eine optimale Anpassung des Druckerzeugers an den jeweiligen Arbeitsprozess er- reicht . As a result of the measures described, an influence on the volume flow or flow velocity or mass flow, which is largely insensitive to contamination and temperature, is integrated in the pressure generator. This can also include the constant pressure function. This enables the pressure generator to be optimally adapted to the respective work process.

Claims

Patentansprüche claims
1. Druckerzeuger für strömende Medien, bei dem mittels eines - insbesondere über einen Frequenzumrichter - drehzahlsteuer- baren Motors ein Verdichter antreibbar ist, d a d u r c h g e k e n n z e i c h n e t , dass die Strömungsgeschwindigkeit und damit bei bekanntem Querschnitt auch der Volumenstrom mittels eines Sensors mit Geber (DB) und Wandler (DW) erfassbar ist und dass durch das Ausgangssignal des Wandlers (DW) die Drehzahl des Motors (M) regelbar ist.1. Pressure generator for flowing media, in which a compressor can be driven by means of a motor which can be speed-controlled, in particular by means of a frequency converter, characterized in that the flow velocity and thus, with a known cross section, also the volume flow by means of a sensor with transmitter (DB) and converter ( DW) can be detected and that the speed of the motor (M) can be regulated by the output signal of the converter (DW).
2. Druckerzeuger nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass der Geber (DB) im Stutzenbereich des Verdichters (V), angebracht ist.2. Pressure generator according to claim 1, so that the sensor (DB) is attached in the nozzle area of the compressor (V).
3. Druckerzeuger nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , dass der Wandler (DW) im Kühlluftstrom des Motors (M) positioniert ist und das Geber (DB) und Wandler (DW) über Druckleitungen (Dl,D2) miteinander verbunden sind.3. Pressure generator according to claim 1 or 2, so that the converter (DW) is positioned in the cooling air flow of the motor (M) and the transmitter (DB) and converter (DW) are connected to one another via pressure lines (Dl, D2).
4. Druckerzeuger nach einem der vorstehenden Ansprüche, d a- d u r c h g e k e n n z e i c h n e t , dass als Sensor vorteilhaft ein Differenzdrucksensor vorgesehen ist.4. Pressure generator according to one of the preceding claims, that a differential pressure sensor is advantageously provided as the sensor.
5. Druckerzeuger nach Anspruch 4, d a d u r c h g e k e n n z e i c h n e t , dass ein Eingang des Differenzdrucksensors mit dem Druck der Umgebung beaufschlagbar ist, so dass durch den Wandler ein druckregelndes bzw. begrenzen- des Ausgangssignal generierbar ist.5. Pressure generator according to claim 4, so that an input of the differential pressure sensor can be acted upon by the pressure of the environment, so that a pressure-regulating or limiting output signal can be generated by the converter.
6. Druckerzeuger nach einem der vorstehenden Ansprüche, d a- d u r c h g e k e n n z e i c h n e t , dass aus hydraulischen oder thermodynamischen Zusatzparametern auf einen je- weiligen Massenstrom schließbar ist, der über die Drehzahlregelung an den jeweiligen technischen Prozess optimal anpassbar ist. 6. Pressure generator according to one of the preceding claims, d a- characterized in that hydraulic or thermodynamic additional parameters can be used to infer a mass flow which can be optimally adapted to the respective technical process via the speed control.
7. Druckerzeuger nach einem der vorstehenden Ansprüche, d a- d u r c h g e k e n n z e i c h n e t , dass als oder statt eines Verdichters (V) eine Vakuumpumpe, ein Seitenkanalgebläse, ein Radialkompressor, ein Rootsgebläse, ein Schraubverdichter oder eine ähnliche bzw. ähnlich wirkende Strömungsmaschine vorgesehen ist.7. Pressure generator according to one of the preceding claims, that a vacuum pump, a side channel blower, a radial compressor, a roots blower, a screw compressor or a similar or similarly acting flow machine is provided as or instead of a compressor (V).
8. Druckerzeuger nach einem der vorstehenden Ansprüche, d a- d u r c h g e k e n n z e i c h n e t , dass die Wand- lersignale über einen Umsetzer auf einen Analog-Eingang für Drehzahlsollwerte des Motors (M) geschaltet sind.8. Pressure generator according to one of the preceding claims, that the converter signals are connected via a converter to an analog input for speed setpoints of the motor (M).
9. Druckerzeuger nach Anspruch 8, d a d u r c h g e k e n n z e i c h n e t , dass der Umsetzer baulich mit dem Frequenzumsetzer (FU) vereinigt oder kombiniert ist. 9. Pressure generator according to claim 8, so that the converter is structurally combined or combined with the frequency converter (FU).
PCT/DE2002/000870 2001-03-19 2002-03-12 Pressure generator for flowing media WO2002075156A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20220578U DE20220578U1 (en) 2001-03-19 2002-03-12 Pressure generators for flowing media

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10113249.2 2001-03-19
DE10113249A DE10113249A1 (en) 2001-03-19 2001-03-19 Pressure generator for flowing media

Publications (1)

Publication Number Publication Date
WO2002075156A1 true WO2002075156A1 (en) 2002-09-26

Family

ID=7678054

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/000870 WO2002075156A1 (en) 2001-03-19 2002-03-12 Pressure generator for flowing media

Country Status (2)

Country Link
DE (2) DE10113249A1 (en)
WO (1) WO2002075156A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7880421B2 (en) 2006-04-24 2011-02-01 Ebm-Papst St. Georgen Gmbh & Co. Kg Energy-conserving ventilating fan
US8360691B2 (en) 2007-06-12 2013-01-29 Moretto Spa Plant for the controlled-speed pneumatic transport of granular material and conveyance speed control process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020205531A1 (en) 2020-04-30 2021-11-04 Mahle International Gmbh Side channel compressor for compressing gas
DE102020205533A1 (en) 2020-04-30 2021-11-04 Mahle International Gmbh Side channel compressor for compressing a gas

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269660A (en) * 1990-07-02 1993-12-14 Compagnie Generale Des Matieres Nucleaires Method and an installation for adjusting the flow rate of air in a network of ducts
US5269659A (en) * 1992-08-28 1993-12-14 University Corporation For Atmospheric Research Air sampling pump system
US5295790A (en) * 1992-12-21 1994-03-22 Mine Safety Appliances Company Flow-controlled sampling pump apparatus
DE29914892U1 (en) * 1999-08-25 1999-12-30 Siemens Ag Control device for volume flow control, in particular of a blower
US6186744B1 (en) * 1996-10-12 2001-02-13 Synetics Solutions Inc. Volumetric airflow indicator and control device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3402120A1 (en) * 1984-01-23 1985-07-25 Rheinhütte vorm. Ludwig Beck GmbH & Co, 6200 Wiesbaden METHOD AND DEVICE FOR CONTROLLING DIFFERENT OPERATING PARAMETERS FOR PUMPS AND COMPRESSORS
DD285152A5 (en) * 1989-06-16 1990-12-05 Veb Kombinat Pumpen Und Verdichter,Dd ADJUSTING THE GUIDELINES AND WORKING POINTS OF TURBO WORKING MACHINES
DE19506790C2 (en) * 1994-02-28 2000-11-16 Kuehnle Kopp Kausch Ag Process for the efficiency-optimized operation of a radial compressor
CA2184882A1 (en) * 1995-09-08 1997-03-09 Hideomi Harada Turbomachinery with variable-angle flow guiding vanes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269660A (en) * 1990-07-02 1993-12-14 Compagnie Generale Des Matieres Nucleaires Method and an installation for adjusting the flow rate of air in a network of ducts
US5269659A (en) * 1992-08-28 1993-12-14 University Corporation For Atmospheric Research Air sampling pump system
US5295790A (en) * 1992-12-21 1994-03-22 Mine Safety Appliances Company Flow-controlled sampling pump apparatus
US6186744B1 (en) * 1996-10-12 2001-02-13 Synetics Solutions Inc. Volumetric airflow indicator and control device
DE29914892U1 (en) * 1999-08-25 1999-12-30 Siemens Ag Control device for volume flow control, in particular of a blower

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7880421B2 (en) 2006-04-24 2011-02-01 Ebm-Papst St. Georgen Gmbh & Co. Kg Energy-conserving ventilating fan
US8360691B2 (en) 2007-06-12 2013-01-29 Moretto Spa Plant for the controlled-speed pneumatic transport of granular material and conveyance speed control process
US9440802B2 (en) 2007-06-12 2016-09-13 Moretto S.P.A. Plant for the controlled-speed pneumatic transport of granular material and conveyance speed control process

Also Published As

Publication number Publication date
DE10113249A1 (en) 2002-10-02
DE20220578U1 (en) 2004-01-15

Similar Documents

Publication Publication Date Title
DE60221375T2 (en) MASS FLOWMETER SYSTEMS AND METHODS
DE19882239B3 (en) Vortex flowmeter with signal processing
EP0954508B1 (en) A vapour recovery system for a fuel dispenser
EP2932205B1 (en) Thermal flow meter and method for determining and/or monitoring a flow rate of a medium
DE3703401A1 (en) FAN PART AND METHOD FOR FUNCTIONAL CHECKING THEREOF
DE102007009302A1 (en) Pump flow determining method for e.g. centrifugal pump, involves providing calibrated curve with closed valve with revolutions, and calculating coefficients from curve for output against flow rate on basis of performance ratio of pump
EP1276541B1 (en) Volumetric control for blower filter devices
WO2002075156A1 (en) Pressure generator for flowing media
EP3036408B1 (en) Method for operating a turbo-machine having overload protection and turbo-machine comprising a device for carrying out said method
EP3385690A1 (en) Aircraft fluid control system having a pressure sensor
EP0326257B1 (en) Fluidic apparatus
WO2015043915A1 (en) Method for operating a turbomachine in which a mechanical disturbance occurs, and turbomachine having a device for performing the method
DE19851523C1 (en) Fan for compressible delivery medium has arrangement for deriving volume flow from pressure, temperature and rotor speed measurement values
EP2386762B1 (en) Method of anti-surge protection for a dynamic compressor using a surge parameter
DE1160652B (en) Device for measuring the mutual axial displacement of two turbine parts
WO1989002581A1 (en) A device for measuring the volume flow of a fan
DE102005060887A1 (en) Speed controller in fluid-cooled version
AU2017376849B2 (en) Liquid flow sensor with adjustable operational range
CN109238382B (en) Fuel flow calculating method of adjustable turbine pump oil supply system
WO1999058984A1 (en) Device for measuring the rotational speed of fluid-driven drive mechanisms
CN105807793A (en) Dust removal pipeline dust gas flow adjustment system
WO2011131214A1 (en) Method and device for determining volumetric flow rate
EP0183987A1 (en) Device for measuring the flow in an air conditioning equipment
EP3199927B1 (en) A method and a system for metering flow through a fluid conduit
DE2155311A1 (en) DEVICE FOR CONTROLLING A TURBO COMPRESSOR

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP