DE102009006819A1 - Laboratory apparatus, particularly rotary evaporator, has controlling or regulating unit for controlling or regulating component assembly, particularly rotary drive, heating bath and lift - Google Patents

Abstract

The laboratory apparatus, particularly rotary evaporator (11), has a controlling or regulating unit for controlling or regulating a component assembly, particularly a rotary drive (13), a heating bath and a lift (23). A controlling or regulating parameter, particularly rotary speed of the rotary drive, and a heating bath temperature or elevator position of the lift are adjusted by a remote control (25).

Description

The The present invention relates to a laboratory apparatus, in particular a rotary evaporator, with at least one control and / or regulating unit for control and / or regulating at least one assembly of the laboratory device, in particular a rotary drive, a heating bath and / or a lift.

at a rotary evaporator is a laboratory device, the Heating bath and an immersible in the heating bath evaporator flask includes. In operation, a liquid medium in the heating bath, For example, water or - for higher temperatures - oil, heated, in order to heat the evaporator flask immersed in the heating bath. hereby a liquid mixture contained in the evaporator flask can be heated, so that the respective distillate, in particular solvent, is evaporated. The evaporated distillate flows then in a cooler of the rotary evaporator to condense there. Subsequently, will collected the condensate in a collecting flask. The in the evaporator flask remaining distillation residue can be further processed or analyzed. Frequently additionally a vacuum pump for generating a vacuum in the evaporator flask and the radiator provided to lower the boiling temperature, thereby accelerating the distillation and the distillation rate is increased can be.

Furthermore For example, a rotary evaporator includes a rotary drive for rotation of the evaporator flask in the heating bath. Due to the rotation of the Evaporator flask heated evenly and on the heated inner wall of the evaporator flask becomes a thinner one size surface having liquid film from which the distillate evaporates quickly, efficiently and gently can be. Furthermore The rotary evaporator usually includes a lift to lower the evaporator flask into the heating bath or to lift out of this.

From the above-mentioned modules or functional units, in particular Rotary drive, heating bath and lift, can one or more assemblies on each a control and / or regulating unit, in particular in each case a control and / or Control electronics, controlled or regulated. For example It is known to adjust the rotational speed of the Rotary drive one operating unit, for setting the heating temperature the heating bath another control unit and to operate the Lifts to provide another control unit. In addition, another can Control unit for adjusting the pressure in the evaporator flask and / or for operation be provided the vacuum pump. At the rotational speed of the rotary drive, the heating temperature of the heating bath, the in the evaporator piston prevailing pressure and the height position or position of the lift are each a control and / or control parameters.

to Reduction of the risk a person using the rotary evaporator by broken glass and splashes of liquid in case of an explosion (due to overpressure) or implosion (due to vacuum or vacuum) of the evaporator flask, it is known to provide the heating bath of the rotary evaporator with a protective hood. Indeed is the guard not suitable to the operator against escaping vapors to protect adequately.

For this it is known to operate the rotary evaporator under a hood. To access the at least one operating unit in this case to be able to for example, a rotation speed setting or to change the Heizbad temperature, must have a windscreen the deduction, however, at least partially open, resulting in the danger the operator again increased. About that In addition, this is at least partially opening the trigger and operating the at least one operating unit by the at least partially open Deduction awkward.

Basically an operating unit of a laboratory device due to the installation site of the respective laboratory device and / or the orientation of the respective laboratory device at the installation site only be cumbersome.

Of the Invention is based on the object, a laboratory device of the beginning called to create a comfortable and in particular hazard poor Operation of the control unit allows.

These Task is performed by a laboratory device solved with the features of claim 1, and in particular thereby, that at least one control and / or regulation parameter, in particular the rotational speed of the rotary drive, the heating bath temperature and / or the height position of the lift, is adjustable by means of a remote control.

Due to the design of the operating unit, in particular of the control panel, as a remote control, especially as a mobile handset, the control unit can be placed easily accessible and easy to use, regardless of the location and / or orientation of the laboratory device, whereby the ergonomics is increased. In particular, it is possible to remotely place and / or operate the remote control from the particular other laboratory device. In a rotary evaporator or other laboratory equipment operated under a fume hood operator safety increases since the respective laboratory device can also be operated with a closed trigger. In addition, a control unit that is designed as a remote control, in case of a defect or if it is to be replaced by a successor model (upgrade), easier exchangeable than a control unit, which is integrated into the respective assembly.

The Remote control can include the laboratory device according to the invention be, d. H. Be part of the laboratory device according to the invention. in principle but it is also possible that the laboratory device according to the invention, the remote control does not include, but that only a receiving device or a connection is provided through which or the remote control wireless or wired to the laboratory device is connectable. Especially is the remote control with the at least one control and / or regulating unit connected or connectable.

To an embodiment of the invention, the remote control is a central Remote control for setting the control and / or regulation parameters for at least formed two modules. On the central remote control are then controls for the at least two modules available. Such a central Arrangement of controls is clearer than a distributed arrangement, as is the case with several, separate control units. In a rotary evaporator, at least the rotation speed is preferred the rotary drive and the heating bath temperature, and possibly the height position of the lift, and possibly also at least one vacuum parameter, in particular the pressure applied to the evaporator flask, via the central remote control adjustable.

alternative and / or additionally the control unit may act as a central control and / or Control unit for controlling and / or regulating at least two Modules be formed. Such a central control and / or Control unit is less susceptible to interference than several separate control and / or regulating units. Furthermore is it sufficient to provide only a single power supply, which then the central control and / or regulating unit with power provided. By decoupling the for control and / or regulation the respective module necessary hardware of the respective Assembly can be the reliability and operating life of the respective module can be increased. In particular, the central remote control with the central control and / or Control unit connected or connectable. In a rotary evaporator are preferably at least the rotary drive and the heating bath and possibly the height position over the lift the central control and / or regulating unit can be controlled and / or regulated. For a To be applied vacuum can alternatively also provide a separate control and / or regulating unit be.

Prefers The remote control is designed as a removable remote control and / or are means for detachably attaching the remote control intended. In particular, the remote control is detachable on the laboratory apparatus attached and formed in the removed state as a remote control. When installed, the remote control is detachably attached to the laboratory device. For the Placement of the remote control can therefore be between an attached State and a detached state are selected. The removable Attachment of the remote control can for example via a Snap, snap, click and / or plug connection done.

To Another embodiment of the invention is the remote control as a wired remote control, especially with a cable, formed and / or a connection is provided, through which the Remote control wired to the laboratory device is connectable. The remote control can then be captively bound to the laboratory device.

The Remote control can be a cable holder and / or cover and / or a winding core for include the cable. The cable receptacle and / or cover may be cupped or trough-like design and / or held captive. The Cable receptacle and / or cover is particularly intended to the cable wound on the remote control or the cable wound there Cover part of the cable and / or wound or partially wound up To maintain state.

Especially is the cable receptacle and / or cover between a first, the winding and unwinding of the cable preventing position and a second, the winding and unwinding of the cable permitting position adjustable. Preferably, the cable receptacle and / or cover from the first, in particular closed, position into the second, especially open position extendable. Conversely, the cable receptacle and / or cover from the second position to the first position be inserted.

Preferably, the cable receiving and / or cover is wedge-shaped and / or can take two with respect to a longitudinal axis of the winding core rotated by 180 ° to each other rotational positions. The first rotational position can be provided for removably attaching the remote control to the laboratory device, placing it upright and / or fixing it to a wall or the like. The second rotational position may be to place the remote control on a table for improved ergonomics.

Furthermore Can the cable receptacle and / or cover on its outside a particular U-shaped Cable management, in particular recess, to a non-wound part take the cable, and / or it can recesses for wall mounting the remote control, in particular housing holes and / or mounting holes, be provided.

To another embodiment of the invention is the remote control as a wireless remote control is formed and / or is a receiving device provided by the remote control wirelessly connectable to the laboratory device is. A wireless remote control offers over a wired remote control even more flexibility, because in the selection of the installation site and / or the placement of the Remote control no consideration a cable, if necessary, in particular to a predetermined cable length taken must become. In particular, the laboratory device is then a corresponding receiver or Transceiver provided.

Preferably is the remote control as a radio remote control, especially as Bluetooth remote control, trained and / or is the receiver as radio receiver educated. A radio remote control works - different as for example an IR remote control - even without an optical view to the appropriate recipient. A Bluetooth device is special for low ranges designed.

The Remote control can be used as a mobile device, such as a handheld PC, Pocket PC, PDA (Personal Digital Assistant), MDA (Mobile Digital Assistant) or Smartphone, be formed, in particular as selbstständi ges and / or commercial mobile device, which is preferably equipped with a Bluetooth interface is.

Especially when using such a commercially available mobile device it is preferred if the remote control is an operating system, in particular Windows Mobile, and / or any application software that includes a graphical programming language, especially Labview Mobile, based. It can So commercial Software programs are used. The use of an operating system especially Windows Mobile, allows that the remote also works for additional applications such as normal office applications are used can. The application software can be particularly useful under Labview Mobile be easily programmed, ensuring a clear graphical user interface is.

To Another embodiment of the invention includes the remote control a hardware interface for a removable and / or mobile data storage. At the hardware interface For example, it may be a port or a slot for the data store act. The data store may in particular be a Flash card, such as a micro SD card, act. On the Data storage can the control and / or regulation parameters, d. H. the process parameters, for the respective operation of the laboratory device saved or documented. Conversely, you can turn off The process memory stored there stored process parameters or taken over become. In particular, a programming of the process parameters, in particular a temporal course of the process parameters a conventional one PC with subsequent transmission on the remote control possible. About that In addition, the thus programmed process parameters on several laboratory equipment dubbed become.

Provided it is the laboratory device is a rotary evaporator, it is preferred that the at least one control and / or regulation parameter from the Group selected is, at least from the rotational speed of the rotary drive, the heating bath temperature, the height position the lift, a pressure applied to an evaporator piston, if necessary a duration of operation of the rotary evaporator or an assembly thereof and any combinations of two or more of the above Parameters exists.

at it can be the laboratory device according to the invention next to the one already mentioned Rotary evaporator also a parallel synthesizer, a magnetic stirrer, a laboratory stirrer, an overhead stirrer, a Shaker and mixer, one Vacuum pump and / or a disperser act.

advantageous embodiments The invention are also in the subclaims, the description of the figures and the drawing indicated.

The The invention will be described below by way of example with reference to FIGS Drawing described. They show, in each case in a schematic representation,

1 a perspective view of a rotary evaporator with a remote control, wherein a heating bath is omitted,

2 a schematic representation of assemblies of the rotary evaporator 1 including heating bath, and

3 different views of Fernbe from 1 ,

The in 1 illustrated rotary evaporator 11 includes a rotary drive 13 for a non-illustrated, designed as a round bottom flask, V-flask or the like evaporator flask, which can be heated in a heating bath, not shown, to evaporate a distillate from a liquid mixture therein. The evaporated distillate then passes through a rotary drive 13 passed steam passage 15 from the in 1 only an obliquely downward from the rotary drive 13 protruding grinding core is recognizable, in a cooler 17 to condense there. The condensed distillate is then placed in a receiver flask 19 collected.

On the radiator 17 is a vacuum connection 21 provided to the radiator 17 and to apply a vacuum generated by a vacuum pump to the evaporator flask, whereby the boiling temperature for the distillate can be lowered. In addition, the rotary evaporator includes 11 a lift 23 that drives the rotation 13 carries and can move it in the vertical direction to lower the evaporator flask in the heating bath or raise from this.

In addition, the rotary evaporator includes 11 an operating unit 25 , The control unit is as a removable remote control 25 educated. In 1 is the remote control 25 in the on the (remaining) rotary evaporator 11 shown attached position, wherein the attachment is made via a plug-in mechanism.

The remote control 25 is over a cable 37 ( 2 ) with a central control and / or regulating unit 29 connected. The connection between the remote control 25 and the control unit 29 is designed in particular as an RS-485 interface. Basically, of course, other interfaces are possible. The central control and / or regulating unit 29 is in a lift 23 associated base module arranged. The central control and / or regulating unit 29 is for controlling and / or regulating the rotary drive 13 , the heating bath 27 and an actor 39 of the lift 23 and includes a power supply that comes with a power / voltage supply 31 is connectable to the rotary evaporator 11 to supply with power / voltage.

By means of the remote control 25 are both the rotational speed for the rotary drive 13 as well as the heating temperature for the heating bath 27 adjustable. The set parameters are then sent to the central control and / or regulating unit 29 transmitted, which drives the rotation 13 and the heating bath 27 then controls and / or regulates accordingly. In addition, via the remote control 25 the lift 23 operated, the height position of the lift 23 and / or height or immersion depth of the evaporator flask are adjusted.

The training of the operating unit as a remote control 25 allows the control panel to be independent of the location and / or orientation of the rotary evaporator 11 is easily accessible and can be operated comfortably. In particular, a rotary evaporator located in a flue can 11 be operated even when the deduction is closed. In addition, a remote control can be replaced as needed easier than a built-in a respective module control unit. Due to the design of the operating unit as a central control unit 25 , by which the control and / or regulation parameters of both the rotary drive 13 as well as the heating bath 27 are adjustable, and through which the lift 23 operable, the ease of use can be further increased.

In addition, another control and / or regulating unit 33 provided via another RS-485 interface with the lift 23 and over the elevator 23 with the remote control 25 connected is. The further control and / or regulating unit 33 is for controlling and / or regulating the on the radiator 17 and the evaporator piston adjacent vacuum or negative pressure provided, the desired pressure also on the remote control 25 is adjustable, and wherein the further control and / or regulating unit 33 with a vacuum pump 35 connected is.

In the 3a and 3b is the remote control 25 each shown in a side view. The remote control 25 includes a housing 49 , on the front panel controls 51 are provided for setting the process parameters. At the back of the case 49 is a tray or tub-like cable receptacle or cable cover 41 appropriate. The cable receptacle / cover 41 is extendable and captive on the housing 49 appropriate.

In 3a is the cable receptacle / cover 41 in a home position or retracted position, in 3b shown in an extended position. In the extended position, it is possible to use the cable 37 around a winding core 43 winding up or unwinding from it, using the remote 25 in the extended position has a cable drum-like shape to the winding and unwinding of the cable 37 to facilitate. In the retracted position is the wound cable 37 or the wound part of the cable 37 from the cable receptacle / cover 41 covered. A winding or unwinding of the cable 37 is not possible then.

In 3c is the remote control 25 shown in a frontal view, with two controls 51 are shown in the form of knobs. About the controls 51 has the remote control 25 an unillustrated display for displaying set and / or measured process parameters.

3d shows a back of the remote 25 or an outside of the cable receptacle / cover 41 at the one cable channel 47 is formed in the form of a depression to one not within the cable receiving / cover 41 wound part of the cable 37 to stow. In addition, housing holes or mounting holes 53 . 57 recognizable, which are intended to the remote control 25 to attach to a wall via fasteners, such as nails or screws.

The cable receptacle / cover 41 is in the extended position according to 3b around the longitudinal axis 45 of the winding core 43 rotatable, leaving a home position of the cable receptacle / cover 41 according to 3e in which the cable receptacle / cover 41 opposite to the 3a shown rotational position is rotated by 180 °. As in the 3a . 3b and 3e can be seen is the cable receptacle / cover 41 wedge-shaped, the outside of the cable cover 41 at an angle to the front of the remote control 25 runs. The rotational position according to 3a serves the removable attachment of the remote control 25 on a rotary evaporator 11 , the rotational position according to 3e serves the filing of the remote control 25 on a laboratory bench, so that each has an ergonomic operation of the remote control 25 is possible.

The remote control 25 also has a slot 55 for a flash card on which the process parameters, if appropriate, their time profiles, are stored.

In the 1 to 3 a wired remote control is shown. As a remote control, however, a commercially available mobile device may be used, such as a PDA having a Bluetooth interface, so that the connection to a control and / or regulating unit can be wireless and via a corresponding receiver of the rotary evaporator. The application software, which allows the setting of the aforementioned process parameters or control and / or regulation parameters, can then be programmed, for example, in Labview Mobile.

11

rotary evaporator

13

rotary drive

15

Vapor tube

17

cooler

19

catchpots

21

vacuum connection

23

lift

25

remote control

27

heating bath

29

central Control and / or regulating unit

31

Current / voltage supply

33

Further Control and / or regulating unit

35

vacuum pump

37

electric wire

39

actuator

41

Cable holder / cover

43

winding core

45

longitudinal axis

47

Cabel Canal

49

casing

51

operating element

53

housing hole

55

slot

57

mounting hole

Claims (16)

Laboratory apparatus, in particular rotary evaporator ( 11 ), with at least one control and / or regulating unit ( 29 ) for controlling and / or regulating at least one assembly ( 13 . 27 ) of the laboratory device, in particular a rotary drive ( 13 ), a heating bath ( 27 ) and / or a lift ( 23 ), wherein at least one control and / or regulation parameter, in particular the rotational speed of the rotary drive ( 13 ), the heating bath temperature and / or the height position of the lift ( 23 ), by means of a remote control ( 25 ) is adjustable. Laboratory apparatus according to claim 1, characterized in that the remote control ( 25 ) as a central remote control for setting the control and / or regulation parameters for at least two assemblies ( 13 . 27 ) is trained. Laboratory apparatus according to claim 1 or 2, characterized in that the control and / or regulating unit ( 29 ) as a central control and / or regulating unit for controlling and / or regulating at least two assemblies ( 13 . 27 ) is trained. Laboratory apparatus according to at least one of the preceding claims, characterized in that the remote control ( 25 ) is designed as a removable remote control and / or means for removable attachment of the remote control ( 25 ) are provided. Laboratory apparatus according to claim 4, characterized in that the detachable attachment of the remote control ( 25 ) via a snap, snap, click and / or plug connection takes place. Laboratory apparatus according to at least one of the preceding claims, characterized in that the remote control ( 25 ) as a wired remote control, in particular with a cable ( 37 ), is formed and / or a connection is provided, through which the remote control ( 25 ) wired to the laboratory device ( 11 ) is connectable. Laboratory apparatus according to claim 6, characterized in that the remote control ( 25 ) a particular dish or tub-like cable receptacle and / or cover ( 41 ) and / or a winding core ( 43 ) for the cable ( 37 ). Laboratory apparatus according to claim 7, characterized in that the cable receptacle and / or cover ( 41 ) between a first, the winding and unwinding of the cable ( 37 ) and a second, the winding and unwinding of the cable ( 37 ) permitting position is adjustable. Laboratory apparatus according to claim 7 or 8, characterized in that the cable receptacle and / or cover ( 41 ) is formed wedge-shaped and / or two with respect to a longitudinal axis ( 45 ) of the winding core ( 43 ) can take 180 ° rotated positions. Laboratory apparatus according to at least one of claims 7 to 9, characterized in that the cable receptacle and / or cover ( 41 ) on its outside a particular U-shaped cable guide ( 47 ), in particular depression, and / or recesses ( 49 ) for wall mounting the remote control ( 25 ), in particular housing holes ( 53 . 57 ) and / or mounting holes ( 53 . 57 ), having. laboratory apparatus according to at least one of the claims 1 to 5, characterized in that the remote control as a wireless remote control is formed and / or a receiving device is provided is through which the remote control wirelessly connected to the laboratory device is. laboratory apparatus according to claim 11, characterized in that the remote control as a radio remote control, especially as a Bluetooth remote control, is formed and / or the receiving device designed as a radio receiver is. laboratory apparatus according to at least one of the preceding claims, characterized that the remote control as a mobile device, such as a handheld PC, Pocket PC, PDA, MDA or smartphone, is formed. laboratory apparatus according to at least one of the preceding claims, characterized that the remote control is an operating system, especially Windows Mobile, and / or application software includes on one graphical programming language, especially Labview Mobile. Laboratory apparatus according to at least one of the preceding claims, characterized in that the remote control ( 25 ) a hardware interface ( 55 ) for a removable and / or mobile data storage. Rotary evaporator according to at least one of the preceding Claims, characterized in that the at least one control and / or regulation parameter selected from the group is, at least from the rotational speed of the rotary drive, the heating bath temperature, the height position of the lift and a pressure applied in an evaporator flask and any combinations of two or more of the above Parameters exists.