EP2142802B1 - Pump stand - Google Patents

Pump stand Download PDF

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Publication number
EP2142802B1
EP2142802B1 EP08716540.3A EP08716540A EP2142802B1 EP 2142802 B1 EP2142802 B1 EP 2142802B1 EP 08716540 A EP08716540 A EP 08716540A EP 2142802 B1 EP2142802 B1 EP 2142802B1
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EP
European Patent Office
Prior art keywords
operator
control unit
control
pump stand
pump
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EP08716540.3A
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German (de)
French (fr)
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EP2142802A1 (en
Inventor
Erich Becker
Erwin Hauser
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KNF Neuberger GmbH
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KNF Neuberger GmbH
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    • 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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity

Definitions

  • the invention relates to a pumping station, which is provided for generating and regulating the vacuum intended for a rotary evaporator, with a control device which is in control connection with an operating unit having at least one operating element.
  • Such vacuum pumping stations are required in order to generate and regulate the vacuum required in rotary evaporators. It is already known to change and regulate the desired process parameters, for example, by changing the speed of the drive motor provided in the pumping station.
  • rotary evaporators are often processed liquid mixtures with volatile liquid fractions whose vapors may have a harmful effect.
  • the rotary evaporator in question and the associated pumping station must be operated in the fume cupboard, so as not to endanger the laboratory personnel.
  • the laboratory personnel must always remain nearby in order to be able to observe the function displays and monitor the process parameters through the cutting disc of the trigger and to open the trigger if necessary and, if necessary, actuate the control elements provided on the vacuum pumping unit at the expense of a health hazard ,
  • the solution to this problem in the pumping station of the type mentioned in particular is that the operating unit is designed as a, with the control device of the pumping station wirelessly in control connection remote control unit.
  • WO 2005/002076 A1 One knows already a remote-controlled device, which is to be remotely controllable wirelessly via a remote control unit and is intended for rough use in the industrial sector or in agriculture. To allow for safety reasons, a safe and unambiguous assignment of a remote control to a device, and in order to avoid contamination of filigree plug-in contacts with security under harsh operating conditions is in the off WO 2005/002076 A1 previously known device provided that before its commissioning always has an assignment mode to run, which ensures a clear assignment of the device on the one hand to a corresponding remote control on the other hand.
  • this safety mode involves switching the pump to a specified pumping mode, there is a risk that the process controlled by, among other things, the pump may require a pumping capacity different from the specified pumping mode, for example to avoid overreactions in the process; If, in contrast, the previously known pump is put into a rest state in the safety mode, the process results, which may also depend on the pump, may be lost.
  • a console for receiving or storing the operating unit is provided at the pumping station, which also has a contact system for the power supply to the charging system for the batteries located in the operating unit 4 that the pumping station either directly with the control unit located on the console or via the remote control unit can be actuated wirelessly at a distance, and that the operating unit has at least one touchscreen provided both for displaying the process parameters and also designed as an operating element, which is intended for selecting the control functions and / or changing the process parameters.
  • the pumping station has an operating unit which is designed as a remote control unit which is wirelessly in control connection with the control device of the pumping station.
  • the laboratory staff can observe through the cutting disc of the trigger the rotary evaporator and the associated pumping station to change if necessary, the process parameters on the remote control unit and re-adjust. Since the remote control unit with the control device of the pumping station is wirelessly in control connection, while a temporary opening of the trigger is not required. Rather, the pumping station can be operated with sufficient distance from outside the trigger without the laboratory personnel having to expose themselves to special risks.
  • the pumping station according to the invention has a console for receiving or storing the operating unit. If the operating unit is located on the console, the pumping station can be operated as usual with the control unit located on the console. In contrast, the pumping process requires a safety distance of the operating personnel, the pumping station can be operated by means of remote control with the pumping station also wirelessly in control connection remote control unit with distance. Thus, it is only the pumping station according to the invention that it can be operated either directly with the operating unit located on the console or can also be operated wirelessly with distance by means of the remote control unit. It is a particular advantage of the pumping station according to the invention that the console also has a contact system for the power supply to the charging system for the batteries located in the operating unit.
  • the batteries in the operating unit can always be charged if the pumping station is operated directly via the control unit located in the console. In this way, it is ensured that sufficient power is always available in the operating unit if the pumping operation requires a distance between the pumping station on the one hand and the remote control unit on the other hand and the pumping station is to be wirelessly controlled by remote control unit even at a distance.
  • the pumping station has at least one display for displaying the process parameters, which display is connected to the pumping station via wireless data transmission. Since in the pumping station according to the invention on the remote control unit, the current process values can be both read and changed, the pumping station according to the invention can also be conveniently monitor and control distance from outside the trigger. It is particularly advantageous if an automatic boiling point detection can be displayed on the remote control unit.
  • the wireless data transmission and / or control connection can be for example an ultrasound or an infrared connection.
  • a radio link is preferred. Since even such a wireless connection has only a more or less limited radius of action, and since an accidental exceeding of this radius of action there is a risk that the rotary evaporator out of control, it is useful if the remote control unit has a visual and / or audible warning, which triggers an alarm as soon as the remote control unit is out of the functional area of the wireless data transmission and / or control connection.
  • the remote control unit In order to be able to operate the remote control unit in a simple manner manually, it is expedient for the remote control unit to have at least one operating knob as operating element which is intended for selecting the control functions and / or for changing the process parameters. Additionally or alternatively, the remote control unit may have a touch screen as a control element, which is also intended for selecting the control functions and / or for changing the process parameters. On this touch screen, the operation can be done by directly tapping the buttons shown on the display. In this case, a preferred embodiment provides that the touch screen is simultaneously configured as a display for displaying the process parameters. It when the remote control unit has at least one control knob and at least one touch screen, which are in operative connection with each other is particularly advantageous.
  • the pressure in the rotary evaporator preferably adjusted via the adjustable at the remote engine speed of the pump provided in the pumping vacuum pump to adjust the boiling point exactly and avoid foaming of the medium to achieve a reduction in noise and to optimize the life of the pumping can.
  • control device In order to rule out incorrect operation, it is advantageous if special main functions of the control device can only be selected when the pumping station is at a standstill, while process-important parameters can also be changed during operation.
  • a preferred embodiment according to the invention provides that individual functions of the control device are arranged in a menu structure and that by means of the at least one operating element, the scrolling through the individual menus.
  • this embodiment can be browsed by pressing the control knob and / or touch the touch screen in the menu.
  • an emergency stop switch is provided on the pumping station itself and / or on the remote control unit.
  • a preferred embodiment according to the invention provides that the pumping station has at least one diaphragm pump.
  • a pumping station 1 is shown, the is provided for generating and regulating the particular vacuum for a rotary evaporator not shown here.
  • the pumping station 1 has at least one vacuum pump 2 designed here as a diaphragm pump, to which a drive motor is assigned.
  • the speed of the drive motor provided in the pumping station 1 can be changed.
  • the variable process parameters can be adjusted to a control device which is in control connection with an operating unit 4 having at least one operating element 3.
  • the operating unit 4 is designed as a remote control unit which is wirelessly in control connection with the control device of the pumping station 1.
  • the laboratory staff can observe through the cutting disc of a fume hood the rotary evaporator and the associated pumping station in order to change the process parameters on the remote control unit and adjust it again if necessary.
  • the operating unit 4 is in wireless control with the control device of the pumping station 1, a temporary opening of the trigger is not required. Rather, the pumping station 1 can be operated with a sufficient distance from outside the trigger without the laboratory personnel having to expose themselves to special risks.
  • a console 5 is provided for receiving or storing the operating unit 4.
  • the pumping station 1 can either operate directly with either located on the console 5 control unit 4 or can be actuated by remote control unit 4 at a distance either. So that a network-independent operating unit 4 is available over a longer period of time, a contact system for the power supply to the charging system for the batteries located in the remote control unit is provided on the console.
  • the operating element provided on the operating unit 4 is designed here as a control knob 3, which is intended for selecting the control functions and / or for changing the process parameters.
  • the operating unit 4 additionally has a touch screen 6 as operating element, which is likewise intended for selecting the control functions and / or for changing the process parameters.
  • the operation can be done by directly tapping buttons 7 shown on the display.
  • the touch screen 6 is also designed as a display for displaying the process parameters. Control knob 3 and touch screen 6 are in operative connection with each other.
  • the pressure in the rotary evaporator is preferably adjusted via the controllable on the operating unit 4 engine speed of the pumping station provided in the vacuum pump 2 to adjust the boiling point exactly and avoid foaming of the medium to achieve a noise reduction and optimize the life of the pumping can.
  • control device In order to rule out incorrect operation, special main functions of the control device can only be selected when the pumping station 1 is at a standstill, while process-important parameters can also be changed during operation. Individual functions of the control device are in a menu structure arranged, by means of the controls 3, 6, the scrolling through the individual menus.
  • a separator 8 is arranged upstream of the vacuum pump and a separator 9 downstream of the vacuum pump.

Description

Die Erfindung betrifft einen Pumpstand, der zur Erzeugung und Regulierung des für einen Rotationsverdampfer bestimmten Vakuums vorgesehen ist, mit einer Steuerungseinrichtung, die mit einer, wenigstens ein Bedienelement aufweisenden Bedienungseinheit in Steuerverbindung steht.The invention relates to a pumping station, which is provided for generating and regulating the vacuum intended for a rotary evaporator, with a control device which is in control connection with an operating unit having at least one operating element.

Solche Vakuum-Pumpstände werden benötigt, um den in Rotationsverdampfern erforderlichen Unterdruck erzeugen und einregeln zu können. Dabei ist es bereits bekannt, die gewünschten Prozessparameter beispielsweise durch eine Veränderung der Drehzahl des im Pumpstand vorgesehenen Antriebsmotors zu verändern und einzuregeln. In solchen Rotationsverdampfern werden häufig auch Flüssigkeitsmischungen mit leicht flüchtigen Flüssigkeitsanteilen verarbeitet, deren Dämpfe eine gesundheitsschädliche Wirkung haben können. Bei der Verarbeitung solcher Flüssigkeitsmischungen muss der betreffende Rotationsverdampfer sowie der dazugehörige Pumpstand im Abzug betrieben werden, um das Laborpersonal nicht zu gefährden. Dabei muss das Laborpersonal stets in der Nähe verbleiben, um durch die Trennscheibe des Abzugs die Funktionsanzeigen beobachten und die Prozessparameter überwachen zu können, und um bei Bedarf den Abzug öffnen und gegebenenfalls auch unter Inkaufnahme einer Gesundheitsgefährdung die am Vakuum-Pumpstand vorgesehenen Bedienelemente betätigen zu können.Such vacuum pumping stations are required in order to generate and regulate the vacuum required in rotary evaporators. It is already known to change and regulate the desired process parameters, for example, by changing the speed of the drive motor provided in the pumping station. In such rotary evaporators are often processed liquid mixtures with volatile liquid fractions whose vapors may have a harmful effect. When processing such liquid mixtures, the rotary evaporator in question and the associated pumping station must be operated in the fume cupboard, so as not to endanger the laboratory personnel. The laboratory personnel must always remain nearby in order to be able to observe the function displays and monitor the process parameters through the cutting disc of the trigger and to open the trigger if necessary and, if necessary, actuate the control elements provided on the vacuum pumping unit at the expense of a health hazard ,

Die erfindungsgemäße Lösung dieser Aufgabe besteht bei dem Pumpstand der eingangs erwähnten Art insbesondere darin, dass die Bedienungseinheit als eine, mit der Steuerungseinrichtung des Pumpstands drahtlos in Steuerverbindung stehende Fernbedienungseinheit ausgebildet ist.The solution to this problem in the pumping station of the type mentioned in particular is that the operating unit is designed as a, with the control device of the pumping station wirelessly in control connection remote control unit.

Aus der WO 2005/002076 A1 kennt man bereits ein fernbedienbares Gerät, das auf drahtlosem Weg über eine Fernbedienungseinheit auf Abstand fernbedienbar sein soll und für den rauen Einsatz im industriellen Bereich oder in der Landwirtschaft bestimmt ist. Um aus sicherheitstechnischen Gründen eine sichere und eindeutige Zuordnung einer Fernbedienung zu einem Gerät zu ermöglichen, und um auch unter rauen Betriebsbedingungen eine Verschmutzung filigraner Steckkontakte mit Sicherheit zu vermeiden, ist bei dem aus WO 2005/002076 A1 vorbekannten Gerät vorgesehen, dass vor dessen Inbetriebnahme stets ein Zuordnungsmodus abzulaufen hat, der eine eindeutige Zuordnung des Gerätes einerseits zu einer dazugehörigen Fernbedienung andererseits sicherstellt. Zwar soll auch das aus WO 2005/002076 A1 vorbekannte Gerät eine Andockstelle für die Fernbedienung aufweisen, an welcher die Fernbedienung vorübergehend fixierbar ist, - dies soll jedoch nichts daran ändern, dass das vorbekannte Gerät selbst dann nur über die dem Zuordnungsmodus voraussetzende Funkverbindung und keinesfalls über eine leitungsgebundene Steuerverbindung ansteuerbar ist, wenn sich die Fernbedienung in der Andockstelle befindet. Die allein über Funk bewerkstelligte Steuerverbindung birgt jedoch die Gefahr, dass das Gerät bei "entleertem" Akku steuerungslos fortbetrieben werden muss und dass in dieser Situation nicht schnell genug eine Steuerverbindung wieder hergestellt werden kann, wenn die Fernbedienung in die Andockstelle zurückgelegt wird.From the WO 2005/002076 A1 One knows already a remote-controlled device, which is to be remotely controllable wirelessly via a remote control unit and is intended for rough use in the industrial sector or in agriculture. To allow for safety reasons, a safe and unambiguous assignment of a remote control to a device, and in order to avoid contamination of filigree plug-in contacts with security under harsh operating conditions is in the off WO 2005/002076 A1 previously known device provided that before its commissioning always has an assignment mode to run, which ensures a clear assignment of the device on the one hand to a corresponding remote control on the other hand. Although that too should WO 2005/002076 A1 previously known device have a docking point for the remote control, to which the remote control is temporarily fixed, - this should not change the fact that the prior art device is controlled only via the assignment mode presupposing radio connection and in no case via a wired control connection, if the Remote control located in the docking station. However, the control connection made solely by radio carries the risk that the device must be operated without control with "deflated" battery and that in this situation, a control connection can not be restored quickly enough when the remote control is returned to the docking.

Aus der US 2005/0129535 A1 ist bereits ein Pumpstand mit einer Pumpeinheit vorbekannt, die mit einer Bedienungseinheit drahtlos in Steuerverbindung steht. Der Gegenstand des Patentanspruchs 1 ist in zweiteiliger Form gegenüber dieser Druckschrift abgefasst. Die Pumpeinheit und die Bedienungseinheit des vorbekannten Pumpstands weisen daher Sende- und Empfangseinrichtungen auf, die einen wechselseitigen Austausch der Befehls- und Datensignale erlauben. Dabei werden die drahtlosen Befehls- und Datenwege mit Hilfe einer Überwachungseinrichtung überwacht, die die Pumpe bei einer störungsbedingten Unterbrechung der Befehls- und Datenwege in einen Sicherheitsmodus umschaltet. Sofern dieser Sicherheitsmodus eine Umschaltung der Pumpe in einen festgelegten Pumpbetrieb beinhaltet, besteht jedoch die Gefahr, dass der u.a. auch mit der Pumpe gesteuerte Prozess eine vom festgelegten Pumpbetrieb abweichende Pumpleistung erfordert, um beispielsweise Überreaktionen im Prozess zu vermeiden; wird die vorbekannte Pumpe im Sicherheitsmodus demgegenüber in einen Ruhezustand versetzt, können die eventuell auch von der Pumpe abhängigen, bisher erzielten Prozessergebnisse verloren gehen.From the US 2005/0129535 A1 already a pumping station with a pump unit is already known, which is wirelessly in control connection with an operating unit. The subject of claim 1 is in two parts form compared to this document. The pump unit and the operating unit of the known pumping station therefore have transmitting and receiving devices which have a mutual Allow exchange of command and data signals. In this case, the wireless command and data paths are monitored by means of a monitoring device, which switches the pump in a fault-related interruption of the command and data paths in a security mode. However, if this safety mode involves switching the pump to a specified pumping mode, there is a risk that the process controlled by, among other things, the pump may require a pumping capacity different from the specified pumping mode, for example to avoid overreactions in the process; If, in contrast, the previously known pump is put into a rest state in the safety mode, the process results, which may also depend on the pump, may be lost.

Aus der EP 1 577 559 A1 ist bereits ein Vakuumpumpstand vorbekannt, bei dem eine Vakuumpumpe mit einer Bedienungseinheit drahtlos in Steuerverbindung steht. Auch bei diesem vorbekannten Vakuumpumpstand weisen die Bedienungseinheit und die Pumpeinheit Sende- und Empfangseinrichtungen auf, die einen wechselseitigen Austausch der Befehls- und Datensignale erlauben. Dabei besteht jedoch auch bei diesem vorbekannten Vakuumpumpstand die Gefahr, dass der Pumpstand bei "entleertem" Akku in der Bedienungseinheit steuerungslos fortbetrieben werden muss und dass in dieser Situation nicht schnell genug eine Steuerverbindung wieder hergestellt werden kann.From the EP 1 577 559 A1 already a vacuum pumping station is previously known, in which a vacuum pump with a control unit is wirelessly in control connection. In this known vacuum pumping station, too, the operating unit and the pump unit have transmitting and receiving devices which allow a mutual exchange of the command and data signals. However, there is also the danger in this known vacuum pumping station that the pumping station must be operated without control in the operating unit when the battery is "drained" and that a control connection can not be restored quickly enough in this situation.

Es besteht daher insbesondere die Aufgabe, einen Pumpstand der eingangs erwähnten Art zu schaffen, der sich durch seine einfache Handhabung auszeichnet und der eine Gesundheitsgefährdung des Laborpersonals weitestgehend ausschließt.There is therefore in particular the task of creating a pumping station of the type mentioned, which is characterized by its ease of use and excludes a health hazard to the laboratory staff as far as possible.

Die erfindungsgemäße Lösung dieser Aufgabe besteht bei dem Pumpstand der eingangs erwähnten Art insbesondere darin, dass am Pumpstand eine Konsole zur Aufnahme oder Ablage der Bedienungseinheit vorgesehen ist, die auch ein Kontaktsystem für die Stromführung zum Ladesystem für die in der Bedienungseinheit 4 befindlichen Akkus aufweist, dass der Pumpstand entweder unmittelbar mit der auf der Konsole befindlichen Bedienungseinheit bedienbar oder über die Fernbedienungseinheit auch mit Abstand drahtlos betätigbar ist, und dass die Bedienungseinheit wenigstens einen, sowohl zur Anzeige der Prozessparameter vorgesehenen als auch als Bedienelement ausgebildeten Touchscreen aufweist, der zur Auswahl der Kontrollfunktionen und/oder zur Änderung der Prozessparameter bestimmt ist.The achievement of this object is in the pumping station of the type mentioned in particular that a console for receiving or storing the operating unit is provided at the pumping station, which also has a contact system for the power supply to the charging system for the batteries located in the operating unit 4 that the pumping station either directly with the control unit located on the console or via the remote control unit can be actuated wirelessly at a distance, and that the operating unit has at least one touchscreen provided both for displaying the process parameters and also designed as an operating element, which is intended for selecting the control functions and / or changing the process parameters.

Der erfindungsgemäße Pumpstand hat eine Bedienungseinheit, die als eine, mit der Steuerungseinrichtung des Pumpstands drahtlos in Steuerverbindung stehende Fernbedienungseinheit ausgebildet ist. Somit kann das Laborpersonal durch die Trennscheibe des Abzugs den Rotationsverdampfer sowie den dazugehörigen Pumpstand beobachten, um bei Bedarf die Prozessparameter an der Fernbedienungseinheit verändern und neu einregeln zu können. Da die Fernbedienungseinheit mit der Steuerungseinrichtung des Pumpstands drahtlos in Steuerverbindung steht, ist dabei ein auch nur vorübergehendes Öffnen des Abzugs nicht erforderlich. Vielmehr lässt sich der Pumpstand mit ausreichendem Abstand von außerhalb des Abzugs bedienen, ohne dass sich das Laborpersonal dabei besonderen Gefahren aussetzen muss.The pumping station according to the invention has an operating unit which is designed as a remote control unit which is wirelessly in control connection with the control device of the pumping station. Thus, the laboratory staff can observe through the cutting disc of the trigger the rotary evaporator and the associated pumping station to change if necessary, the process parameters on the remote control unit and re-adjust. Since the remote control unit with the control device of the pumping station is wirelessly in control connection, while a temporary opening of the trigger is not required. Rather, the pumping station can be operated with sufficient distance from outside the trigger without the laboratory personnel having to expose themselves to special risks.

Dabei weist der erfindungsgemäße Pumpstand eine Konsole zur Aufnahme oder Ablage der Bedienungseinheit auf. Liegt die Bedienungseinheit auf der Konsole auf, kann der Pumpstand wie üblich mit der auf der Konsole befindlichen Bedienungseinheit unmittelbar bedient werden. Erfordert der Pumpvorgang demgegenüber einen Sicherheitsabstand des Bedienpersonals, kann der Pumpstand über die mit dem Pumpstand auch drahtlos in Steuerverbindung stehende Fernbedienungseinheit mit Abstand betätigt werden. Es zeichnet somit allein den erfindungsgemäßen Pumpstand aus, dass dieser wahlweise entweder mit der auf der Konsole befindlichen Bedienungseinheit unmittelbar bedienbar oder über die Fernbedienungseinheit auch mit Abstand drahtlos betätigbar ist. Dabei ist es ein besonderer Vorteil des erfindungsgemäßen Pumpstands, dass die Konsole auch über ein Kontaktsystem für die Stromzuführung zum Ladesystem für die in der Bedienungseinheit befindlichen Akkus verfügt. Über dieses Kontaktsystem können die in der Bedienungseinheit befindlichen Akkus stets aufgeladen werden, wenn der Pumpstand über die in der Konsole befindliche Bedienungseinheit unmittelbar betätigt wird. Auf diese Weise ist sichergestellt, dass in der Bedienungseinheit stets ausreichend Strom zur Verfügung steht, wenn der Pumpvorgang einen Abstand zwischen dem Pumpstand einerseits und der Fernbedienungseinheit andererseits erfordert und der Pumpstand mittels Fernbedienungseinheit auch auf Abstand drahtlos gesteuert werden soll.In this case, the pumping station according to the invention has a console for receiving or storing the operating unit. If the operating unit is located on the console, the pumping station can be operated as usual with the control unit located on the console. In contrast, the pumping process requires a safety distance of the operating personnel, the pumping station can be operated by means of remote control with the pumping station also wirelessly in control connection remote control unit with distance. Thus, it is only the pumping station according to the invention that it can be operated either directly with the operating unit located on the console or can also be operated wirelessly with distance by means of the remote control unit. It is a particular advantage of the pumping station according to the invention that the console also has a contact system for the power supply to the charging system for the batteries located in the operating unit. Using this contact system, the batteries in the operating unit can always be charged if the pumping station is operated directly via the control unit located in the console. In this way, it is ensured that sufficient power is always available in the operating unit if the pumping operation requires a distance between the pumping station on the one hand and the remote control unit on the other hand and the pumping station is to be wirelessly controlled by remote control unit even at a distance.

Möglich ist es, dass am Pumpstand ausreichend große Anzeigen vorgesehen sind, an denen auch von außerhalb des Abzugs die aktuellen Prozessparameter abgelesen und kontrolliert werden können. Die einfache Handhabung des erfindungsgemäßen Pumpstands wird noch dadurch begünstigt, dass die Fernbedienungseinheit wenigstens ein Display zur Anzeige der Prozessparameter aufweist, welches Display mit dem Pumpstand über eine drahtlose Datenübertragung verbunden ist. Da bei dem erfindungsgemäßen Pumpstand an der Fernbedienungseinheit die aktuellen Prozesswerte sowohl abgelesen als auch verändert werden können, lässt sich der erfindungsgemäße Pumpstand auch mit Abstand von außerhalb des Abzugs bequem überwachen und steuern. Dabei ist es besonders vorteilhaft, wenn auf der Fernbedienungseinheit auch eine automatische Siedepunkterkennung anzeigbar ist.It is possible that at the pumping station sufficiently large displays are provided, at which also the current process parameters can be read and controlled from outside the trigger. The ease of use of the pumping station according to the invention is further facilitated by the fact that the remote control unit has at least one display for displaying the process parameters, which display is connected to the pumping station via wireless data transmission. Since in the pumping station according to the invention on the remote control unit, the current process values can be both read and changed, the pumping station according to the invention can also be conveniently monitor and control distance from outside the trigger. It is particularly advantageous if an automatic boiling point detection can be displayed on the remote control unit.

Die drahtlose Datenübertragung und/oder Steuerverbindung kann beispielsweise eine Ultraschall- oder eine Infrarot-Verbindung sein. Bevorzugt wird jedoch eine Funkverbindung. Da auch eine solche drahtlose Verbindung nur einen mehr oder weniger begrenzten Aktionsradius hat, und da bei einem unbeabsichtigten Überschreiten dieses Aktionsradius die Gefahr besteht, dass der Rotationsverdampfer außer Kontrolle gerät, ist es zweckmäßig, wenn die Fernbedienungseinheit eine optische und/oder akustische Warnanzeige hat, die einen Alarm auslöst, sobald die Fernbedienungseinheit aus dem Funktionsbereich der drahtlosen Datenübertragung und/oder Steuerverbindung ist.The wireless data transmission and / or control connection can be for example an ultrasound or an infrared connection. However, a radio link is preferred. Since even such a wireless connection has only a more or less limited radius of action, and since an accidental exceeding of this radius of action there is a risk that the rotary evaporator out of control, it is useful if the remote control unit has a visual and / or audible warning, which triggers an alarm as soon as the remote control unit is out of the functional area of the wireless data transmission and / or control connection.

Um die Fernbedienungseinheit auf einfache Weise manuell betätigen zu können, ist es zweckmäßig, wenn die Fernbedienungseinheit wenigstens einen Bedienknopf als Bedienelement hat, der zur Auswahl der Kontrollfunktionen und/oder zur Änderung der Prozessparameter bestimmt ist. Zusätzlich oder stattdessen kann die Fernbedienungseinheit einen Touch-Screen als Bedienelement aufweisen, der ebenfalls zur Auswahl der Kontrollfunktionen und/oder zur Änderung der Prozessparameter bestimmt ist. An diesem Touch-Screen kann die Bedienung durch direktes Antippen auf dem Display abgebildeter Tasten erfolgen. Dabei sieht eine bevorzugte Ausführungsform vor, dass der Touch-Screen gleichzeitig auch als Display zur Anzeige der Prozessparameter ausgestaltet ist. Besonders vorteilhaft ist es, wenn die Fernbedienungseinheit zumindest einen Bedienknopf und wenigstens einen Touch-Screen hat, die miteinander in Wirkverbindung stehen. Dabei wird der Druck im Rotationsverdampfer vorzugsweise über die an der Fernbedienungseinheit einstellbare Motordrehzahl der im Pumpstand vorgesehenen Vakuumpumpe eingeregelt, um den Siedepunkt exakt einstellen und ein Aufschäumen des Mediums vermeiden, eine Geräuschminderung erreichen und die Lebensdauer des Pumpstands optimieren zu können.In order to be able to operate the remote control unit in a simple manner manually, it is expedient for the remote control unit to have at least one operating knob as operating element which is intended for selecting the control functions and / or for changing the process parameters. Additionally or alternatively, the remote control unit may have a touch screen as a control element, which is also intended for selecting the control functions and / or for changing the process parameters. On this touch screen, the operation can be done by directly tapping the buttons shown on the display. In this case, a preferred embodiment provides that the touch screen is simultaneously configured as a display for displaying the process parameters. It when the remote control unit has at least one control knob and at least one touch screen, which are in operative connection with each other is particularly advantageous. The pressure in the rotary evaporator preferably adjusted via the adjustable at the remote engine speed of the pump provided in the pumping vacuum pump to adjust the boiling point exactly and avoid foaming of the medium to achieve a reduction in noise and to optimize the life of the pumping can.

Um Fehlbedienungen auszuschließen, ist es vorteilhaft, wenn spezielle Hauptfunktionen der Steuerungseinrichtung nur im Stillstand des Pumpstandes auswählbar sind, während prozesswichtige Parameter auch während des Betriebs noch verändert werden können.In order to rule out incorrect operation, it is advantageous if special main functions of the control device can only be selected when the pumping station is at a standstill, while process-important parameters can also be changed during operation.

Eine bevorzugte Ausführungsform gemäß der Erfindung sieht vor, dass einzelne Funktionen der Steuerungseinrichtung in einer Menüstruktur angeordnet sind und dass mittels dem zumindest einen Bedienelement das Blättern durch die einzelnen Menüs erfolgt. Bei dieser Ausführungsform kann durch Betätigen des Bedienknopfes und/oder Antippen des Touch-Screens im Menü geblättert werden.A preferred embodiment according to the invention provides that individual functions of the control device are arranged in a menu structure and that by means of the at least one operating element, the scrolling through the individual menus. In this embodiment can be browsed by pressing the control knob and / or touch the touch screen in the menu.

Vorteilhaft ist es, wenn am Pumpstand selbst und/oder an der Fernbedienungseinheit ein Notausschalter vorgesehen ist.It is advantageous if an emergency stop switch is provided on the pumping station itself and / or on the remote control unit.

Eine bevorzugte Ausführungsform gemäß der Erfindung sieht vor, dass der Pumpstand zumindest eine Membranpumpe hat.A preferred embodiment according to the invention provides that the pumping station has at least one diaphragm pump.

Weiterbildungen gemäß der Erfindung ergeben sich aus den Patentansprüchen sowie der Zeichnung. Nachstehend wir die Erfindung anhand eines bevorzugten Ausführungsbeispieles noch näher beschrieben.Further developments according to the invention will become apparent from the claims and the drawings. Below, we will describe the invention with reference to a preferred embodiment in more detail.

In der einzigen Figur ist ein Pumpstand 1 dargestellt, der zur Erzeugung und Regulierung des für einen hier nicht weiter gezeigten Rotationsverdampfer bestimmten Vakuums vorgesehen ist. Zur Erzeugung dieses Vakuums weist der Pumpstand 1 zumindest eine hier als Membranpumpe ausgebildete Vakuumpumpe 2 auf, der ein Antriebsmotor zugeordnet ist. Um die gewünschten Prozessparameter verändern und einregeln zu können, ist beispielsweise die Drehzahl des im Pumpstand 1 vorgesehenen Antriebsmotors veränderbar. Dabei lassen sich die veränderbaren Prozessparameter an einer Steuerungseinrichtung einregeln, die mit einer, wenigstens ein Bedienelement 3 aufweisenden Bedienungseinheit 4 in Steuerverbindung steht.In the single figure, a pumping station 1 is shown, the is provided for generating and regulating the particular vacuum for a rotary evaporator not shown here. To generate this vacuum, the pumping station 1 has at least one vacuum pump 2 designed here as a diaphragm pump, to which a drive motor is assigned. In order to change and adjust the desired process parameters, for example, the speed of the drive motor provided in the pumping station 1 can be changed. In this case, the variable process parameters can be adjusted to a control device which is in control connection with an operating unit 4 having at least one operating element 3.

In der Figur ist angedeutet, dass die Bedienungseinheit 4 als eine, mit der Steuerungseinrichtung des Pumpstandes 1 drahtlos in Steuerverbindung stehende Fernbedienungseinheit ausgebildet ist. Somit kann das Laborpersonal durch die Trennscheibe eines Laborabzugs den Rotationsverdampfer sowie den dazugehörigen Pumpstand beobachten, um bei Bedarf die Prozessparameter an der Fernbedienungseinheit verändern und neu einregeln zu können. Da die Bedienungseinheit 4 mit der Steuerungseinrichtung des Pumpstands 1 drahtlos in Steuerverbindung steht, ist dabei ein auch nur vorübergehendes Öffnen des Abzugs nicht erforderlich. Vielmehr lässt sich der Pumpstand 1 mit ausreichendem Abstand von außerhalb des Abzugs bedienen, ohne dass sich das Laborpersonal dabei besonderen Gefahren aussetzen muss.In the figure, it is indicated that the operating unit 4 is designed as a remote control unit which is wirelessly in control connection with the control device of the pumping station 1. Thus, the laboratory staff can observe through the cutting disc of a fume hood the rotary evaporator and the associated pumping station in order to change the process parameters on the remote control unit and adjust it again if necessary. Since the operating unit 4 is in wireless control with the control device of the pumping station 1, a temporary opening of the trigger is not required. Rather, the pumping station 1 can be operated with a sufficient distance from outside the trigger without the laboratory personnel having to expose themselves to special risks.

Am Pumpstand 1 ist eine Konsole 5 zur Aufnahme oder Ablage der Bedienungseinheit 4 vorgesehen. Durch den in gestrichelten Linien dargestellten Umriss der Bedienungseinheit 4 im Bereich der Konsole 5 ist angedeutet, dass sich der Pumpstand 1 wahlweise entweder mit der auf der Konsole 5 befindlichen Bedienungseinheit 4 unmittelbar bedienen oder über die Fernbedienungseinheit 4 auch mit Abstand betätigen lässt. Damit auch eine netzunabhängige Bedienungseinheit 4 über einen längeren Zeitraum zur Verfügung steht, ist an der Konsole ein Kontaktsystem für die Stromzuführung zum Ladesystem für die in der Fernbedienungseinheit befindlichen Akkus vorgesehen.At the pumping station 1, a console 5 is provided for receiving or storing the operating unit 4. By the dashed in Lines shown outline of the control unit 4 in the console 5 is indicated that the pumping station 1 can either operate directly with either located on the console 5 control unit 4 or can be actuated by remote control unit 4 at a distance either. So that a network-independent operating unit 4 is available over a longer period of time, a contact system for the power supply to the charging system for the batteries located in the remote control unit is provided on the console.

Das an der Bedienungseinheit 4 vorgesehene Bedienelement ist hier als Bedienknopf 3 ausgebildet, der zur Auswahl der Kontrollfunktionen und/oder zur Änderung der Prozessparameter bestimmt ist. Die Bedienungseinheit 4 weist zusätzlich auch einen Touch-Screen 6 als Bedienelement auf, der ebenfalls zur Auswahl der Kontrollfunktionen und/oder zur Änderung der Prozessparameter bestimmt ist. An diesem Touch-Screen 6 kann die Bedienung durch direktes Antippen auf dem Display abgebildeter Tasten 7 erfolgen. Dabei ist der Touch-Screen 6 gleichzeitig auch als Display zur Anzeige der Prozessparameter ausgestaltet. Bedienknopf 3 und Touch-Screen 6 stehen miteinander in Wirkverbindung. Dabei wird der Druck im Rotationsverdampfer vorzugsweise über die an der Bedienungseinheit 4 einstellbare Motordrehzahl der im Pumpstand vorgesehenen Vakuumpumpe 2 eingeregelt, um den Siedepunkt exakt einstellen und ein Aufschäumen des Mediums vermeiden, eine Geräuschminderung erreichen und die Lebensdauer des Pumpstands optimieren zu können.The operating element provided on the operating unit 4 is designed here as a control knob 3, which is intended for selecting the control functions and / or for changing the process parameters. The operating unit 4 additionally has a touch screen 6 as operating element, which is likewise intended for selecting the control functions and / or for changing the process parameters. At this touch screen 6, the operation can be done by directly tapping buttons 7 shown on the display. At the same time, the touch screen 6 is also designed as a display for displaying the process parameters. Control knob 3 and touch screen 6 are in operative connection with each other. In this case, the pressure in the rotary evaporator is preferably adjusted via the controllable on the operating unit 4 engine speed of the pumping station provided in the vacuum pump 2 to adjust the boiling point exactly and avoid foaming of the medium to achieve a noise reduction and optimize the life of the pumping can.

Um Fehlbedienungen auszuschließen, sind spezielle Hauptfunktionen der Steuerungseinrichtung nur im Stillstand des Pumpstandes 1 auswählbar, während prozesswichtige Parameter auch während des Betriebs noch verändert werden können. Einzelne Funktionen der Steuerungseinrichtung sind in einer Menüstruktur angeordnet, wobei mittels der Bedienelemente 3, 6 das Blättern durch die einzelnen Menüs erfolgt.In order to rule out incorrect operation, special main functions of the control device can only be selected when the pumping station 1 is at a standstill, while process-important parameters can also be changed during operation. Individual functions of the control device are in a menu structure arranged, by means of the controls 3, 6, the scrolling through the individual menus.

Am Pumpstand 1 selbst ist ein Not-Ausschalter vorgesehen. In dem Pumpstand 1 sind zwei Abscheider integriert, von denen ein Abscheider 8 zuströmseitig vor der Vakuumpumpe und ein Abscheider 9 abströmseitig nach der Vakuumpumpe angeordnet ist.At the pumping station 1 itself an emergency off switch is provided. In the pumping station 1, two separators are integrated, of which a separator 8 is arranged upstream of the vacuum pump and a separator 9 downstream of the vacuum pump.

Claims (7)

  1. Pump stand (1), provided for generating and regulating a vacuum intended for a rotary evaporator, comprising a control device in control connection with an operator-control unit (4) having at least one operator-control element (3, 6), characterized in that a console (5) for receiving or supporting the operator-control unit (4) is provided on the pump stand (1) and also has a contact system for the power supply to the charging system for the rechargeable batteries located in the operator-control unit (4), in that the pump stand (1) either can be operated directly with the operator-control unit (4) located on the console (5) or can be actuated wirelessly even at a distance by way of the remote operator-control unit (4), and in that the operator-control unit has at least one touchscreen provided for displaying process parameters and formed as an operator-control element, intended for selecting the control functions or changing the process parameters.
  2. Pump stand according to Claim 1, characterized in that the remote operator-control unit (4) has an optical and/or acoustic warning indicator, which triggers an alarm as soon as the remote operator-control unit (4) is out of the functional range of the wireless data transmission and/or the control connection.
  3. Pump stand according to Claim 1 or 2, characterized in that the remote operator-control unit (4) has at least one operator-control button (3) as the operator-control element, intended for selecting the control functions and/or changing the process parameters
  4. Pump stand according to one of Claims 1 to 3, characterized in that specific primary functions of the control device can only be selected when the pump stand (1) is turned off.
  5. Pump stand according to one of Claims 1 to 4, characterized in that individual functions of the control device are arranged in a menu structure, and in that browsing through the individual menus is performed by way of the at least one operator-control element (3, 6).
  6. Pump stand according to one of Claims 1 to 5, characterized in that an emergency off switch is provided on the pump stand (1) itself and/or on the remote operator-control unit.
  7. Pump stand according to one of Claims 1 to 6, characterized in that the pump stand (1) has at least one diaphragm pump (2).
EP08716540.3A 2007-04-03 2008-03-14 Pump stand Active EP2142802B1 (en)

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DE102007016385A DE102007016385A1 (en) 2007-04-03 2007-04-03 pumping
PCT/EP2008/002045 WO2008119452A1 (en) 2007-04-03 2008-03-14 Pump stand

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EP2142802A1 EP2142802A1 (en) 2010-01-13
EP2142802B1 true EP2142802B1 (en) 2014-08-20

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US8344875B2 (en) 2013-01-01
WO2008119452A1 (en) 2008-10-09
DE102007016385A1 (en) 2008-10-09
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US20100119379A1 (en) 2010-05-13
EP2142802A1 (en) 2010-01-13
JP2010523870A (en) 2010-07-15

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