EP3914392A1 - Module de dispositif pour un dispositif de laboratoire et procédé de thermorégulation d'un dispositif de laboratoire - Google Patents

Module de dispositif pour un dispositif de laboratoire et procédé de thermorégulation d'un dispositif de laboratoire

Info

Publication number
EP3914392A1
EP3914392A1 EP21703250.7A EP21703250A EP3914392A1 EP 3914392 A1 EP3914392 A1 EP 3914392A1 EP 21703250 A EP21703250 A EP 21703250A EP 3914392 A1 EP3914392 A1 EP 3914392A1
Authority
EP
European Patent Office
Prior art keywords
module
laboratory
temperature control
device module
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21703250.7A
Other languages
German (de)
English (en)
Inventor
Zilan ORHAN
Uwe Orth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Retsch GmbH
Original Assignee
Retsch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Retsch GmbH filed Critical Retsch GmbH
Publication of EP3914392A1 publication Critical patent/EP3914392A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/1815—Cooling or heating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/002—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with rotary cutting or beating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G01N2001/2866—Grinding or homogeneising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N2035/00346—Heating or cooling arrangements
    • G01N2035/00356—Holding samples at elevated temperature (incubation)
    • G01N2035/00386—Holding samples at elevated temperature (incubation) using fluid heat transfer medium
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N2035/00346—Heating or cooling arrangements
    • G01N2035/00445—Other cooling arrangements

Definitions

  • Device module for a laboratory device and method for temperature control of a laboratory device
  • the invention relates to a device module for a laboratory device, in particular for a comminution device for material comminution, further in particular for a laboratory mill, such as a ball mill, and / or for a feeding device for feeding, dosing and / or conveying sample materials and / or for charging of shredding devices such as laboratory mills, of sample dividers or of particle measuring devices.
  • the present invention also relates to a method for temperature control, in particular cooling, of a laboratory device, in particular during operation of the laboratory device, further in particular for temperature control of a laboratory mill, such as a ball mill, and / or for temperature control of a feed device, the feed device being designed for supplying, dosing and / or conveying sample materials and / or for charging shredding devices such as laboratory mills, sample dividers or particle measuring devices, in particular using a device module of the type mentioned at the beginning.
  • liquid nitrogen is fed into the rotary leadthrough via a nitrogen line and a switching valve and via a connection and leaves the rotary leadthrough via a feed line connected to the connection.
  • the nitrogen flow is then led to the grinding jar holder and from there back to the movable part of the rotary leadthrough and finally reaches a collecting vessel via the stationary part of the rotary leadthrough and a return line connected to it.
  • the switching valve is closed. After so much nitrogen has evaporated that the sensor is no longer wetted with nitrogen, the switching valve is opened again. This ensures the supply of liquid nitrogen at all times during the grinding process.
  • the grinding jar holder is flooded with nitrogen and the grinding jar located therein is flushed with liquid nitrogen. As a result, there is direct contact between the temperature control medium and the grinding jar. In addition, the grinding jar is always maximally cooled by the flooding in liquid nitrogen.
  • the object of the present invention is to provide a device module for a laboratory device and a method for temperature control, in particular cooling, of a laboratory device, which in a structurally simple manner with high user-friendliness enable demand-dependent temperature control, in particular cooling, of laboratory devices.
  • the temperature control should take place in such a way that the heat energy dissipated when a component of the laboratory device and / or a material sample treated in the laboratory device is cooled and / or the heat energy supplied when the component and / or the material sample is heated to the greatest possible extent is adapted to actual needs.
  • a device module for a laboratory device which has at least one temperature control medium connection for connecting the device module to a temperature control medium supply of an in particular liquid temperature control medium, in particular for connection to a nitrogen tank or a nitrogen line, at least one line connection for connecting the device module to a supply line as required Laboratory device for the temperature control and at least one actuator of a control and / or regulating circuit for controlling and / or regulating at least one temperature in the laboratory device.
  • the device module makes it possible to supply a laboratory device with an in particular liquid temperature control medium, further in particular liquid nitrogen, from the temperature control medium supply via the temperature control medium connection, at least one flow line of the device module and the at least one line connection for temperature control of the laboratory device.
  • the actuator as part of a control and / or regulating circuit, the volume flow of the temperature control medium fed to the laboratory device via the device module can preferably be changed, with a higher volume flow of a coolant leading to greater cooling in the laboratory device and thus to a reduction of at least one in temperature measured by the laboratory device.
  • the measurement temperature of the laboratory device is taken into account as an actual value in the temperature control and / or regulation.
  • a solenoid valve can be provided as the actuator.
  • the actuator can be designed for the clocked feeding or supply of the temperature control medium to the laboratory device.
  • the actuator is designed to change the temperature of the temperature control medium, which can be done, for example, by mixing at least two temperature control medium flows with different temperatures.
  • the device module is an exchangeable, complex element and forms a separate functional unit that can be connected to the laboratory device as required, which if the temperature control medium transport functions from the temperature control medium supply via the device module to the laboratory device and the change in the temperature control medium volume flow and / or the temperature control medium temperature via the at least one actuator as part of a control and / or regulation process.
  • the device module is an integral unit.
  • the device module according to the invention can be connected to the laboratory device as required, ie depending on the requirement to cool or heat the laboratory device, the connection via the connections of the device module to the laboratory device on the one hand and the temperature control medium supply on the other hand takes place.
  • the device functions of the laboratory device can be called up or executed independently of the functions of the device module, wherein the device module can only be physically connected to the laboratory device when the laboratory device is to be temperature controlled.
  • the device module and the laboratory device are permanently physically connected, in which case the temperature control functions of the device module, ie the forwarding of the temperature control medium to the laboratory device and / or change in the temperature control medium volume flow and / or the temperature control medium temperature, are only then carried out if temperature control of the laboratory device is required.
  • the device module Due to the modular structure of the device module with preferably standardized connections, it is possible to use the same device module for temperature control of different laboratory devices and for this purpose, if necessary, with a laboratory device, fluidically for the temperature control medium transport, mechanically to form a physical connection and metrologically for the transmission of measured values from To connect the laboratory device to the device module.
  • the device module according to the invention thus differs from laboratory devices which already have a stationary temperature control medium connection and an actuator integrated into the device housing.
  • interfaces are provided in the line routing of the temperature control medium from the temperature control medium supply to the place of cooling or heating in the laboratory device, which allow the device module to be separated from the laboratory device as a non-destructive unit or as intended.
  • the device module according to the invention can, if necessary, be used equally for a plurality of identical or differently designed laboratory devices.
  • the device module preferably has a module housing that can be detachably connected to a device housing of the laboratory device. A form-fitting and / or force-fitting connection can be provided between the module housing and the device housing.
  • any power supply for the device module can be provided via an electrical supply line via the laboratory device.
  • the device module can also have a separate power supply.
  • the device module particularly preferably has a control and / or regulating device for generating a control variable for the actuator.
  • the control and / or regulating device can comprise an electronic circuit designed accordingly for this purpose.
  • a control device is preferably provided which determines a control deviation between at least one measurement temperature in the laboratory device and a predetermined setpoint value and then generates the control variable for the actuator on the basis of the control deviation. In this way, an exact and demand-dependent temperature control of the laboratory device is made possible in a simple manner as a function of the actual temperatures in the laboratory device.
  • the logic of the control process or the control loop is integrated into the device module, so that the device module can be used to control the temperature of different laboratory devices as required.
  • Different control and / or regulation programs can be stored in the control and / or regulating device in order to enable temperature control and / or regulation in different laboratory devices.
  • the device module can have at least one communication or data interface.
  • a control device of the device module preferably determines a control deviation between a measurement temperature of the laboratory device and a temperature setpoint stored in the control device.
  • a ball mill for example, especially a vibrating mill, provision can be made to measure the temperature of a grinding vessel and / or a grinding vessel holder and / or the temperature inside the grinding vessel or in the interior of a grinding chamber of the ball mill and transfer this temperature reading to the control device of the device module transferred to.
  • the control deviation of the device module and the device module are then determined on the basis of the measured value possibly generates a control variable in order to adjust the actuator to change the temperature control medium volume flow and / or the temperature control medium temperature accordingly and thus eliminate or at least reduce the control deviation. Due to the local proximity of the temperature measurement to the grinding vessel and / or grinding chamber, a lower control inertia with a higher precision and speed of the control is achieved.
  • the temperature control medium temperature in at least one temperature control medium line of the cooling device and / or the room or ambient temperature are measured and taken into account in the control or regulation within the scope of the temperature control and / or regulation.
  • the device module can have at least one further line connection for connection to a discharge line of the laboratory device for the temperature control medium, wherein temperature control medium can be diverted from the laboratory device and the further line connection and at least one return line of the device module into the environment and / or a collecting container and / or can be returned to the temperature control medium supply is. If liquid nitrogen is used as the temperature control medium, the return line of the device module can open into an expansion pipe in which the nitrogen evaporates and the nitrogen is released into the environment.
  • the device module can also have at least one measuring device for recording a measured value of the temperature control medium, in particular for temperature measurement.
  • Several temperature sensors can be provided in order to enable error detection, in particular to detect temperature control medium leaks occurring in the laboratory device. If the laboratory device is, for example, a laboratory mill with several grinding vessels, each grinding vessel can be connected to a return line in the device module via a discharge line and a further connection of the device module. By measuring the temperature in several return lines of the temperature control medium and comparing the measuring temperatures, it is possible to infer leaks in the laboratory device if the measuring temperatures differ from one another. In principle, it is also possible to measure the level and / or the volume flow of the temperature control medium in the device module using suitable sensors.
  • the device module has a module housing and a functional part that can be detachably connected to the module housing, the functional part serving as a carrier for the temperature control medium connection, the line connection and the actuator.
  • Several line connections can be provided, all of which are held on the functional part. This makes it possible to separate or remove the functional part as an independent functional unit from the module housing and to connect it to another module housing and to use it together with the other module housing.
  • Further components of the functional part that are held on the functional part can be at least one feed line and at least one return line for routing the temperature control medium between the connection points of the functional part.
  • Several line sections can be held on the functional part and brought together or open into a collecting line.
  • the control and / or regulating device or the electronics of the control and / or regulation can preferably be held on the module housing.
  • the module housing is preferably designed for a certain type of laboratory device, which can affect the geometry and dimensioning of the module housing, so that it is useful to assign the device intelligence of the device module or the electronics of the control process and / or the control circuit to the module housing.
  • the housing shape of the module housing can be adapted to the housing shape of a device housing of the laboratory device.
  • the housing is preferably adapted in such a way that, when the device module is connected to the laboratory device, the module housing is perceived as an integral part of the overall housing arrangement formed from the device housing and the module housing.
  • An adaptation can also be provided with regard to the dimensioning and / or external appearance of the module housing and of a laboratory device that can be connected to the device module.
  • a further aspect of the invention thus also relates to a system with at least one functional part and with a plurality of different module housings, the module housings being adapted to the shape and / or dimensioning and / or external appearance or the design. sign the device housing of different laboratory devices and the functional part can be connected to each module housing as required to form a device module according to the invention. For example, at least one outer wall of the module housing and one housing wall of the device housing of the laboratory device can be aligned and / or protrude only slightly, i.e.
  • the device housing of the laboratory device and the module housing can have essentially the same contour lines in a view from above and / or in a view from at least one side of the arrangement of laboratory device and device module.
  • a preferred embodiment in which the device module is perceived as an integral part of the laboratory device can provide that the laboratory device can be set up on the device module.
  • the laboratory device can preferably be set up on the device module via latching and / or holding projections on the top of the device module, so that it is ensured that the laboratory device can only be set up on the device module in a certain orientation relative to the device module and the laboratory device cannot be set up in a horizontal direction can be moved relative to the device module.
  • the laboratory device and the device module are not frictionally connected to one another when they are connected to one another, that is to say in a state when the fluidic connections of the laboratory device and the device module are fluidically connected to convey the temperature control medium.
  • an additional screw connection between the laboratory device and the device module can be dispensed with.
  • screwing the module housing to the device housing is also not excluded.
  • the functional part can preferably be replaced and / or inserted horizontally and preferably from behind on a rear side of the device module into the module housing of the device module.
  • the back of the device module corresponds to the back of the laboratory device when the device module and laboratory device are connected.
  • Condensate can be drained from the laboratory device via the device module.
  • a condensate collector can be provided on the underside of the device module.
  • a Condensate drainage from above can be possible through the functional part downwards.
  • the device module can have a perforated draining surface for condensate water of the laboratory device, which can in particular be a component of the functional part.
  • a condensate collector preferably designed as a pull-out drawer, can be provided for condensate of the laboratory device that drips through the draining surface and the functional part. This makes it possible in a simple manner to collect and discharge condensate.
  • the method according to the invention for temperature control, in particular cooling, of a laboratory device, further in particular a ball mill such as a vibrating mill provides for the first time in the prior art temperature control of the laboratory device in a closed control loop, in particular using a device module according to the invention, with at least one temperature in the laboratory device measured and the temperature measured value is transmitted as a control variable or as an actual value to a control device, in particular a control device of a device module according to the invention.
  • the control device determines a setpoint / actual value deviation or control deviation, which is the input variable of a process controller that calculates a control variable for an actuator.
  • a solenoid valve for example, can be provided as an actuator in order to change the volume flow of the temperature control medium, preferably in a clocked manner, as a function of the control deviation.
  • a solenoid valve for example, can be provided as an actuator in order to change the volume flow of the temperature control medium, preferably in a clocked manner, as a function of the control deviation.
  • the temperature control is possible, for example, by means of a PID controller.
  • the temperature of a laboratory mill is to be monitored and controlled, in particular a laboratory ball mill such as a laboratory vibrating mill
  • a temperature measurement on a grinding jar holder and / or on a grinding jar of the mill and / or a temperature measurement in the grinding chamber of the grinding jar can be provided.
  • At least one temperature sensor can be arranged in the immediate vicinity of the grinding vessel in order to enable the temperature of the grinding vessel to be monitored. If a temperature sensor is installed in the grinding chamber, the temperature of the grinding sample can be monitored. The regulation through the local proximity of the temperature sensors to the grinding vessel and / or to the grinding sample leads to a lower control inertia, so that the precision and speed of the control are high.
  • temperatures of several grinding jars and / or grinding samples are to be regulated independently of one another, this is possible by means of several temperature sensors on and / or in the grinding jars, with the measured temperature values being transmitted to the device module.
  • the regulation of the temperatures in and / or on the grinding jars can take place independently of one another.
  • exemplary embodiments of the invention are shown, which are described below. Show it
  • FIG. 1 shows a perspective view of a device module according to the invention in a view obliquely from the front
  • FIG. 2 shows a perspective view of the device module from FIG. 1 in a view obliquely from the rear
  • FIGS. 1 and 2 shows a perspective view of the device module shown in FIGS. 1 and 2 from below
  • FIG. 4 shows a perspective view of a functional part of the device module shown in FIGS. 1 to 3 in a view obliquely from above
  • FIG. 5 shows the functional part shown in FIG. 4 in a perspective view obliquely from below
  • FIG. 6 shows the functional part shown in FIG. 4 in a perspective view from below looking towards the inside of a panel of the functional part
  • FIGS. 1 to 3 shows a perspective view of an installation of a laboratory device on the device module shown in FIGS. 1 to 3, obliquely from behind and
  • FIGS. 1 to 3 show a schematic process flow diagram of a method according to the invention for controlling the temperature of grinding jars in a laboratory mill.
  • a device module 1 for a laboratory device 2 is shown in perspective in FIGS. 1 to 3, wherein the laboratory device 2 can be a laboratory mill, in particular a laboratory vibrating mill, by way of example.
  • the laboratory device 2 can be a laboratory mill, in particular a laboratory vibrating mill, by way of example.
  • a configuration of the device module 1 adapted to other laboratory devices is also easily possible.
  • the design of the device module 1 as a laboratory mill is therefore to be understood in the following purely as an example.
  • the device module 1 has a functional part 3 shown in FIGS. 4 to 6 that is installed in a module housing 5 of the device module 1 via the rear side 4 (FIG. 2) of the device module 1.
  • the functional part 3 has a cover 6, which is screwed to the module housing 5 on the rear side 4 of the device module 1 by means of knurled nuts 7.
  • the functional part 3 in the exemplary embodiment shown has a temperature control medium connection 8 for connecting the device module 1 to a temperature control medium supply 28 shown schematically in FIG. 8.
  • the temperature control medium supply 28 can be a pressure vessel with liquid nitrogen.
  • the connection can take place via hose connectors, check valves and hose pieces known per se from the prior art and preferably standardized.
  • two line connections 9 are provided on the functional part 3 for connection to two supply lines 10 (shown schematically in FIG. 7) of the laboratory device 2 as required.
  • the line connections 9 it is possible to transfer an in particular liquid temperature control medium from the temperature control medium supply 28 via the temperature control medium connection 8, a flow line 11 which, in the embodiment shown, merges into two further flow lines 12, 13 via a Y-piece 40, and the line connections 9 to the To feed laboratory device 1 via supply lines 10.
  • the connection can in turn take place via hose connectors, check valves and hose pieces known per se from the prior art and preferably standardized.
  • two further line connections 14 are provided on the functional part 3 for connection to lines 15 of the laboratory device 2 for temperature control medium, so that temperature control medium can be derived from the laboratory device 2 and via the further line connections 14 and two return lines 16 of the device module 1 of the Environment can be supplied.
  • the two return lines 16 open into a collecting space 17 with an enlarged cross-sectional area, which is provided for receiving a connection piece 18 for an exhaust pipe (not shown). Liquid nitrogen, which is discharged from the laboratory device 2 via the device module 1, can evaporate into the environment via the exhaust pipe.
  • the functional part also has an actuator 19 designed as a solenoid valve in the exemplary embodiment shown.
  • the actuator 19 it is possible to change the temperature control medium flow which is led from the temperature control medium supply 28 via the temperature control medium connection 8 and the first flow line 11.
  • the actuator 19 is part of a control circuit for regulating a temperature in the laboratory device 2, in particular a temperature on and / or in a grinding jar 22 (FIG. 8) of the laboratory device 2.
  • the actuator 19 allows the volume flow of the via the device module 1 into the Change the temperature control medium conveyed to the laboratory device 2, the actuator 19 being part of a closed control loop for regulating a temperature in the laboratory device 2.
  • At least one temperature sensor 21 is arranged in the immediate vicinity of a grinding jar 22 of the laboratory device 2, which enables the temperature of the grinding jar 22 to be monitored.
  • the temperature sensor 21 can be arranged in a component of a grinding jar holder and / or in a grinding chamber of the grinding jar 22 and thus allow the temperature of the grinding jar 22 and / or the temperature of a grinding sample to be monitored.
  • the determined temperature is then used as an input for a process controller, the measurement temperature representing an actual value and an electronics unit 20 with a correspondingly designed electronic circuit in the device module 1 forming the logic of the control loop.
  • the electronics unit 20 determines a control deviation between a temperature measured in the laboratory device and a predefined setpoint value and generates a control variable for the actuator 19 as a function of the control deviation , in the present case the solenoid valve, drives and, depending on the temperature measured by the temperature sensors 21, a preferably clocked feed or supply of temperature control medium to the laboratory device 2 via the further flow lines 12, 13 and the line connections 9.
  • Fig. 8 shows schematically the process sequence of a method for temperature control of a laboratory device 2 using the example of a laboratory vibrating mill with two grinding jars 22. Two temperature sensors 21 are provided to measure the temperature on two plate-shaped heat transfer elements 23, each heat transfer element 23 being part of a grinding jar holder for one Grinding jar 22 is.
  • the temperature control medium is fed to the heat transfer elements 23 of the two grinding jars 22 via feed lines 10, rotary feedthroughs 24 and first temperature control lines 25 and via further temperature control lines 26 from the heat transfer elements 23 via the rotary feedthroughs 24 to feed lines 15 which are connected to the device module 1 via further line connections 14 are connected.
  • the line connections 14 are connected to the return lines 16, via which the temperature control medium returned from the laboratory device 2 is optionally fed via a throttle 27 to an exhaust pipe 18a.
  • the temperature control medium can be liquid nitrogen from a temperature control medium supply 28, for example a nitrogen tank, so that the nitrogen evaporates and the nitrogen passes into the environment in the exhaust pipe 18a.
  • the return lines 16 do not necessarily have to be brought together, but can also be routed separately into the exhaust pipe 18a.
  • a further temperature sensor 29 can be provided in the laboratory device 2 in order to measure the ambient temperature and to take it into account as a disturbance variable in the temperature control.
  • the device module 1 can also have further temperature sensors 30 in order to determine the flow temperature of the temperature control medium in the flow line 11 and / or the return temperatures of the temperature control medium in the return lines 16. From a comparison of the measured temperature values, conclusions can be drawn as to whether there is a leakage loss of the temperature control medium.
  • the further temperature sensors 30 are used to detect errors.
  • the measured values of the temperature sensors 30 can also be taken into account in the temperature regulation. Due to the local proximity of the temperature sensors 21 in the laboratory device 2 to the grinding jars 22, the control has a low control inertia, so that a high level of precision and high speed of the control is achieved.
  • the temperatures on and / or in the grinding bowls 22 can be regulated independently of one another.
  • the device module 1 can be used for a plurality of laboratory devices 2 and enables a device temperature to be regulated inside the laboratory device 2 in the present case by means of the clocked inflow of liquid nitrogen as the temperature control medium.
  • the regulation of the device temperature can also be made possible by a proportionally controlled inflow of liquid nitrogen.
  • the temperature of external temperature sensors 21 (FIG. 8) is used as an input variable for a process controller, the device module 1 being able to be used, for example, to control the temperature of individual or multiple grinding jars 22 in a laboratory mill.
  • the device module 1 also has on its rear side 4 an on / off switch 31 and a data interface 32 for the transmission of measurement data between the laboratory device 2 and the device module 1, in particular for the transmission of temperature measurement data.
  • the interface 32 is connected to the electronics unit 20.
  • a power supply is possible via a power supply socket 33.
  • a status display 41 is provided in order to display the operating status of the device module 2 in color.
  • the status display 41 can be a light guide with an LED underneath.
  • the device module 1 is connected to the laboratory device 2 via coupling connections, shown schematically in FIG. 8, with check valves provided on the device side and on the module side. A corresponding connection is also provided between the device module 1 and the temperature control medium supply 28.
  • the functional part 3 is shown that, together with the module housing 5, forms the device module 1.
  • the functional part 3 comprises the temperature control medium connection 8, the line connections 9, 14, the internal line routing and the actuator 19.
  • the actuator 19 is held on a perforated plate 34 which is firmly connected to the panel 6.
  • the perforated plate 34 can be moved via the diaphragm 6 After loosening the knurled nuts 7, remove them together with the components attached to the cover 6 and the perforated plate 34 from the housing part 5.
  • the perforated plate 34 of the functional part 3 is located below a recess 35 of a base plate 36 of the module housing 5. Via the recess 35 and the perforated plate 34, condensation water, which occurs in the laboratory device 2 during cooling, can be drip down through the device module 1 and enter a condensate drawer 37 (FIG. 3) on the underside of the device module 1, via which condensation water can be discharged.
  • the drawer 37 is held displaceably on a lower cover plate 39 of the housing part 5, it being understood that the lower cover plate 39 also has recesses for condensation water to pass through.
  • the cover plate 36 of the module housing 5 has projections 38 in order to be able to place the laboratory device 2 on the device module 1 from above in a certain defined position.
  • FIG. 7 the state is shown when the laboratory device 2 stands on the device module 1 from above.
  • the housing shape of the module housing 5 is adapted to the housing shape of the device housing of the laboratory device 2, so that in the connected state of the arrangement formed from the device module 1 and the laboratory device 2, the device module 1 is perceived as an integral part of the overall housing arrangement will.
  • the device module 1 and the laboratory device 2 have, in a view from above, an essentially matching contour line with essentially aligned side surfaces.

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  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Control Of Temperature (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Un module de dispositif (1) pour un dispositif de laboratoire (2) est présenté et décrit. Selon l'invention, le module de dispositif (1) comprend au moins un élément de liaison de moyen de thermorégulation (8) pour la liaison en fonction des besoins du module de dispositif (1) à un dispositif de stockage de moyen de thermorégulation (28) d'un moyen de thermorégulation, en particulier un moyen de thermorégulation liquide ou gazeux, au moins un élément de liaison de conduite (9) pour la liaison en fonction des besoins à au moins une conduite d'alimentation (10) du dispositif de laboratoire (2) pour le moyen de thermorégulation et au moins un actionneur (19) d'un processus de commande et/ou d'une boucle de régulation pour la régulation en boucle ouverte et/ou en boucle fermée d'au moins une température dans le dispositif de laboratoire (2).
EP21703250.7A 2020-02-07 2021-02-03 Module de dispositif pour un dispositif de laboratoire et procédé de thermorégulation d'un dispositif de laboratoire Pending EP3914392A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102020103160 2020-02-07
DE102020119489.7A DE102020119489A1 (de) 2020-02-07 2020-07-23 Gerätemodul für ein Laborgerät und Verfahren zur Temperierung eines Laborgerätes
PCT/EP2021/052504 WO2021156285A1 (fr) 2020-02-07 2021-02-03 Module de dispositif pour un dispositif de laboratoire et procédé de thermorégulation d'un dispositif de laboratoire

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EP3914392A1 true EP3914392A1 (fr) 2021-12-01

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US (1) US20230065817A1 (fr)
EP (1) EP3914392A1 (fr)
CN (1) CN218167224U (fr)
CA (1) CA3164873A1 (fr)
DE (1) DE102020119489A1 (fr)
WO (1) WO2021156285A1 (fr)

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CN114377783A (zh) * 2022-01-19 2022-04-22 扬州市职业大学(扬州开放大学) 一种对糯玉米破皮提取淀粉的定量采集装置

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DE2918834A1 (de) * 1979-05-10 1980-11-20 Gerd Prof Dr Brunner Biologische zellfraktionierung
NZ520125A (en) * 2002-07-12 2006-03-31 Agres Ltd Compound preparation method
JP4445713B2 (ja) * 2003-04-10 2010-04-07 中央化工機商事株式会社 ナノレベルの超微粒子を製造するための水冷式遊星運動型ボールミル粉砕機およびその温度制御方法
CN102369061B (zh) 2009-01-28 2014-01-29 雷特希有限责任公司 带有用于待供给以介质的磨杯的旋转执行部的实验室研磨机

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DE102020119489A1 (de) 2021-08-12
CN218167224U (zh) 2022-12-30
WO2021156285A1 (fr) 2021-08-12
US20230065817A1 (en) 2023-03-02
CA3164873A1 (fr) 2021-08-12

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