EP3800402A1 - Method for temperature regulation of a dispensed fluid - Google Patents

Abstract

The invention is based on a method for regulating the temperature of an output fluid (12), with heat being transferred from a heat transfer medium (14) to the output fluid (12) in at least one method step before the output fluid (12) is output, with at least one method step a control parameter is adapted to a control of the heat transfer medium (14). It is proposed that in at least one method step, depending on an end value (16) of the control parameter of the current output, a start value (18) of the control parameter for a further output of the output fluid (12) is determined.

Description

State of the art

In the DE 10 2005 040 792 B3 a method for regulating the temperature of an output fluid has already been proposed in which, in at least one method step, before the output fluid is output, heat is transferred from a heat transfer medium to the output fluid, a control parameter being adapted to control the heat transfer medium in at least one method step.

Disclosure of the invention

The invention is based on a method for regulating the temperature of an output fluid, with heat being transferred from a heat carrier to the output fluid in at least one method step prior to the output of the output fluid, and with a control parameter being adapted to control the heat carrier in at least one method step.

It is proposed that, in at least one method step, a start value of the control parameter for a further output of the output fluid is determined as a function of an end value of the control parameter of the current output. An “output fluid” is to be understood as meaning, in particular, a fluid that is located in a storage or transport system and is intended to be withdrawn from this system for use. In particular, the output fluid is designed as utility water and / or as drinking water. The output of the output fluid from the storage or transport system can be from manually controlled by a user or automated, for example by a building installation, a household appliance such as a washing machine, a dishwasher or the like, a gardening device, a bathing facility, a production facility or other devices. A setpoint temperature of the output fluid is preferably specified by a user or a device during the output. The method is preferably provided to regulate the output fluid to the predefined setpoint temperature at least during the output. “Provided” is to be understood as meaning in particular specially set up, specially programmed, specially designed and / or specially equipped. The fact that an object is provided for a specific function should be understood in particular to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.

The heat transfer medium is preferably heated during the process by a heat source, in particular by a heating system, by a heat pump, by a solar thermal system, by a district heating and / or local heating transfer station or the like. The heat transfer medium is preferably circulated in a closed heat circuit during the process by a delivery unit, in particular a pump and / or a compressor. Preferably, at least one heat exchanger, in particular one connected to the heat circuit and to the storage or transport system, exchanges heat between the heat carrier and the output fluid. In principle, it is conceivable that further heat exchangers are connected to the heat circuit, in particular in terms of fluid technology, in parallel with the heat exchanger. A fluid control unit for controlling the heat carrier in the heat exchanger is preferably assigned to the heat exchanger. The fluid control unit preferably controls a heat transfer from the heat carrier to the output fluid. The fluid control unit preferably controls a flow rate of the heat carrier through the heat exchanger, in particular to control the heat transfer. For example, the fluid control unit comprises at least one control valve and / or at least one throttle valve. For example, the fluid control unit comprises a bypass line for the heat exchanger with a valve for setting a distribution ratio of the flow rates through the bypass line and the heat exchanger.

A control unit preferably specifies a setting for the fluid control unit by generating a control signal. The control signal is preferably dependent on the control parameter. In particular, the control parameter is an, in particular an adaptive, correction value for the control signal, in particular for the setting of the fluid control unit. The control unit preferably processes at least one measured value of a temperature of the output fluid. In at least one method step, the control unit preferably adapts the control parameter as a function of the measured value and / or as a function of the predefined setpoint temperature, in particular to change the setting of the fluid control unit. In particular, the control unit adapts the control parameter until the setpoint temperature and the measured value are the same apart from a predetermined and / or adjustable tolerance.

The control unit preferably reads out the start value for the control parameter from a memory element of the control unit in at least one method step, in particular at the beginning of the output. The control unit preferably sets the control parameter to the start value in at least one method step, in particular at the beginning of the output. The control unit preferably adapts the control parameter on the basis of the start value as a function of the measured value and the setpoint temperature. The adaptation of the control parameter is preferably implemented in software. Alternatively, the adjustment of the control parameter is implemented in terms of hardware, in particular electrotechnically. The control unit preferably stores in at least one method step, in particular when the output is ended, the final value of the control parameter which has been reached after an adjustment in the memory element. The control unit preferably determines a new starting value for the next dispensing of the output fluid based on the end value. For example, the end value is saved directly as the new start value. For example, the final value is stored with a multiplicative factor, in particular less than 1, applied. For example, an average value from the current start value and the end value is saved as the new start value. For example, an average value from several stored end values is stored as a new start value. For example, a new start value is extrapolated from a trend function of several stored end values. The determination of the new starting value the end value can be used when the current output is ended and / or when the next output begins.

Due to the design according to the invention, the temperature regulation can advantageously be adapted to local conditions at an installation site, for example pressure fluctuations in the heat circuit, and / or to a state of the components used to implement the temperature regulation, for example to a wear-related loss of effectiveness of the heat exchanger. In particular, the control unit can learn a control parameter that is advantageously specific to the installation site. In particular, the control unit can fall back on the installation site-specific control parameters in the event of a renewed output. In particular, an initial difference between the setpoint temperature and the measured value can advantageously be kept small. In particular, the temperature regulation can advantageously quickly reach the specified target temperature. In particular, an advantageously high level of user comfort can be achieved when the dispensing fluid is dispensed.

It is further proposed that, in at least one method step, the end value of the control parameter is stored as the start value of the control parameter for the further output of the output fluid. In particular, in at least one method step, the control unit stores the end value unmodified as the new start value. In particular, the control unit overwrites the current start value with the end value reached. The final value is stored in particular in the memory element of the control unit. The memory element can be designed as a volatile memory element or as a non-volatile memory element. In an embodiment that is advantageously kept simple, only the end value of the control parameter is stored in particular of all signal components of the control signal generated. The end value can in particular be stored as an individual value or as part of a course of the control parameter. In an alternative embodiment, in particular in addition to the final value, further signal components and / or the complete control signal can be logged. Optionally, an operating point, in particular the flow rate, the setpoint temperature and / or a temperature measurement value, a time parameter, in particular a time or an output duration, or the like is stored together with the end value or independently of a storage of the end value. As a result of the configuration according to the invention, the temperature regulation can advantageously be kept simple. In particular, a storage requirement, a space requirement, a computational effort and / or an energy requirement can advantageously be kept low.

It is also proposed that, in at least one method step, a control value of a control-related integral element, I-element for short, is stored as the end value of the control parameter. The I element is preferably part of a PI controller of the control unit. The control parameter is preferably designed as a manipulated variable of the I element. In particular, the end value of the control parameter is the control value of the I element when the output of the output fluid is ended. The control unit preferably determines the termination and / or start of the output by means of a flow rate measurement of the output fluid and / or by means of receiving a signal from the storage and / or transport system. In particular, the signal is transmitted mechanically, electrically, electronically, pneumatically, hydraulically or in some other way. With the configuration according to the invention, long-term fluctuations and / or trends can advantageously be recorded and in particular compensated for.

Furthermore, it is proposed that an adjustment of the control parameter is prevented in at least one method step at the start of the output. In particular, the control unit keeps the control parameter constant at the start value after the start of the output. In at least one method step after the start of the output, the adjustment of the control parameter is activated, in particular on the basis of the start value. The control unit preferably prevents the adjustment of the control parameter for a predetermined delay time. Additionally or alternatively, the adjustment of the control parameter is triggered by a measured value from a sensor unit. For example, the delay time and / or a trigger condition are / is dependent on an average reaction time of the fluid control unit. For example, the delay time and / or a trigger condition are / is dependent on a flow rate, in particular a stabilization of a flow rate, of the heat carrier and / or the output fluid. For example, the delay time and / or a trigger condition are / is dependent on a temperature change, in particular on a stabilization of the temperature, of the heat transfer medium and / or the output fluid, in particular to a respective outlet of the heat exchanger. The delay time is preferably constant. The delay time can optionally be set. The delay time, in particular also when the trigger condition is fulfilled, is preferably at least one second, preferably at least five seconds, preferably greater than ten seconds. The delay time, in particular even without the triggering condition being met, is preferably less than 20 seconds, preferably less than 17 seconds, particularly preferably 15 seconds. As a result of the configuration according to the invention, the control parameter can advantageously be kept independent of the start of the output. In particular, the control parameter can advantageously be kept independent of rapid changes, overshoots and / or turbulence during the start of the output. In particular, a control parameter that has already been adapted to an installation site can advantageously be preserved.

In addition, it is proposed that at least one further control parameter for checking the heat transfer medium is set and / or adapted in at least one method step before the start value is adapted. In particular, the further control parameter is adapted and / or set during the delay time. The further control parameter is preferably designed as a pre-control value. The control unit preferably determines the further control parameter as a function of at least one measured value from the sensor unit, in particular as a function of a flow rate measurement of the output fluid and / or the heat transfer medium, in particular as a function of a temperature measurement of the output fluid and / or the heat transfer medium. For example, the control unit selects a value for the further control parameter from a list stored in the memory element. The control signal from the control unit to the fluid control unit is preferably dependent on the further control parameter. In particular, the control unit uses the further control parameter as a basis for the control signal, which is corrected in particular by the control parameter, in particular by addition to the further control parameter. As a result of the configuration according to the invention, the temperature of the output fluid can advantageously be brought quickly into a close range of the setpoint temperature.

It is further proposed that, in at least one method step, an adjustment of the control parameter is independent of a flow rate of the output fluid. The control unit preferably selects a value for the further control parameter as a function of the flow rate of the output fluid. A value of the control parameter is preferably at least substantially constant for different flow rates. “Essentially constant” should be understood to mean, in particular, with a fluctuation range of less than 5%, preferably less than 3%, particularly preferably less than 1%, with respect to an average value. A difference between temperature changes of the output fluid due to the control parameter at different flow rates is preferably smaller than the tolerance for a deviation of the measured value of the temperature from the setpoint temperature. As a result of the configuration according to the invention, the control parameter is advantageously independent of arbitrary operating parameters, in particular those specified by a user or a device, when the output fluid is dispensed. In particular, short-term fluctuations in the control parameter can advantageously be kept low. In particular, the control parameter can advantageously be precisely adapted to long-term developments and / or conditions at the installation site.

It is further proposed that at least one additional control parameter for checking the heat transfer medium is set and / or adapted in at least one method step at the start of the output. The control unit preferably has at least one further control element, in particular in addition to the I element. The further control element is preferably designed as a proportional element, or P element for short. The additional control parameter is preferably designed as a manipulated variable of the further control element. The control signal from the control unit to the fluid delivery unit is preferably dependent on the additional control parameter. The additional control parameter preferably corrects the control signal. In particular, the control unit adapts the additional control parameter during and / or after the delay time for the control parameter. The control unit preferably reduces an amount of the additional control parameter during the dispensing of the output fluid, in particular after the delay time for the control parameter. In particular, the control unit masks the additional control parameter in the course of the output, in particular after the delay time for the control parameter. In particular, the control unit shifts a portion of the control signal from the additional control parameter, in particular completely, to the control parameter. As a result of the configuration according to the invention, the temperature of the output fluid can advantageously be brought close to the setpoint temperature at the beginning of the output, in particular without waiting for the control parameter to be adjusted.

It is also proposed that the final value be stored together with at least one operating parameter in at least one method step. At the beginning of the output, the control unit preferably selects an end value as the start value for the control parameter as a function of the operating parameter that is also stored. In particular, the control unit compares a current measured value with the stored operating value in order to find a suitable end value. For example, the control unit stores a pressure of the heat transfer medium as an operating parameter. For example, the control unit stores a value range of the further control parameter as an operating parameter. For example, the control unit stores a point in time, in particular a time and / or a season, in particular in the context of a building profile and / or a user profile, as an operating parameter. For example, the control unit stores an output point of the output fluid as an operating parameter, in particular when using output point-specific temperature measurements. As a result of the configuration according to the invention, the control unit can select an advantageously situation-specific start value for the control parameter. In particular, the temperature of the output fluid can advantageously be brought close to the setpoint temperature at the start of the output.

It is also proposed that a consistency check of the end value be carried out in at least one method step for determining the start value. The control unit preferably carries out the consistency check before accepting the end value as the new start value. Alternatively or additionally, the control unit carries out the consistency check before storing the end value. During the consistency check, the control unit preferably compares the end value with a reference value specified by the manufacturer, with the start value and / or with a value of the further control parameter. Preferably the control unit evaluates the end value as inconsistent if there is a deviation from a specified value range. For example, the control unit checks whether a difference between the end value and the start value exceeds a threshold value. For example, the control unit checks whether an amount of the end value has reached a predetermined maximum value. For example, the control unit checks whether a ratio of the final value to the value of the further control parameter has exceeded a threshold value. For example, the control unit checks whether consecutive end values show a trend and / or whether a spread of several end values exceeds a threshold value. The control unit preferably discards the current end value if the consistency check is negative. Optionally, the control unit uses a standard value as the new start value if the consistency check is negative. Optionally, the control unit counts the number of, in particular in sequence, negative consistency checks. The control unit preferably outputs an error signal for negative consistency checks when there is a predetermined number. As a result of the configuration according to the invention, temperature regulation can advantageously be carried out reliably. In particular, a fault and / or wear can advantageously be recognized at an early stage.

It is further proposed that the final value be stored as a link-free individual value in at least one method step. A “link-free individual value” of a variable is to be understood as meaning, in particular, an originally determined individual value of this variable, as is present in particular prior to further processing by a mathematical combination with another variable or another parameter. The originally determined value can be completely unmodified, rounded or averaged. In particular, the end value can be read out again or at least reconstructed from the memory element as an individual value, regardless of further processing to form the control signal. The end value of the control parameter is particularly preferably stored independently of the further control parameter and / or the additional control parameter. Preferably, the selection of the further control parameter and / or the additional control parameter and / or a link between the control parameters, in particular the control signal, are not actively stored after the end of the current output, ie in particular not maintained, enabled for overwriting or actively deleted, in particular reset to a default value. As a result of the configuration according to the invention, the final value can advantageously be stored in a reusable manner. In particular, the final value can be combined with other quantities as required. In particular, it is possible to dispense with storing every possible combination of the end value with another variable. In particular, a number of write accesses to the memory element can advantageously be kept small.

In addition, it is proposed that a determination rule for the further control parameter for determining the further control parameter is kept constant as a function of an operating point, in particular at least in the course of an adaptation of the control parameter. The determination rule assigns, in particular, to an operating point a value of the further control parameter, in particular always the same value, at least for the duration of the method. Different operating points can be assigned different or the same values of the further control parameter by the determination rule. The determination rule can be designed in tabular form, as a functional relationship, as a calibration curve or the like. Particularly preferably, the control unit, in particular at least during a regular course of the method, only carries out read operations on a memory area of the memory element containing the dependency of the further control parameter on an operating point. Optionally, the control unit only has read access to the memory area of the memory element that contains the dependency of the further control parameter on an operating point. In particular, when the output fluid is output again, in particular every time, a result of a combination of the control parameter with the further control parameter and / or an additional control parameter for generating the control signal is newly determined. Optionally, the dependency of the further control parameter on an operating point is stored on a further storage element of the control unit which is separate from the storage element. In particular, the dependency of the further control parameter on an operating point during the manufacture or assembly of a regulating device implementing the method is stored in the memory element. The determination rule can optionally be used outside the regular course of the method, for example during maintenance, a firmware update, or during a seasonal Changeover, in the event of a change in a technical energy supply situation or the like, can be updated or changed over to an alternative determination rule. As a result of the configuration according to the invention, a number of write accesses to the memory element can advantageously be kept small. In particular, it is possible to dispense with the expenditure of time for adapting the further control parameter to a specific device that uses the method and / or to a specific installation location of the device.

It is also proposed that the end value be stored independently of a rate of change of the control parameter. In particular, the control unit stores the end value regardless of whether the control parameter rises, falls, oscillates or changes in some other way, or whether it has reached a stable value. The control unit preferably stores the last value as the end value that the control parameter assumes before or when the current output is switched off. Alternatively, the control unit averages the control parameter over an output time of the output or a smaller time segment. The design according to the invention can advantageously keep the implementation and testing effort low. In particular, an advantageously robust method can be provided. In particular, when a device implementing the method is set, it is advantageous to check a few special cases. In particular, a special learning phase can advantageously be kept short or it can be dispensed with entirely.

It is further proposed that the start value be used independently of one, in particular the already mentioned, additional control parameter and / or one, in particular the already mentioned, additional control parameter of the current output. In particular, the control signal includes a signal component that is dependent on the control parameter. In particular, the control signal comprises a further signal component which is different from the signal component and which is dependent on the further control parameter. A value of the further control parameter determined by the control unit depends in particular on the operating point at which an output takes place. A value of the control parameter set by the control unit depends in particular on system parameters of a device which carries out the method. Of the Control parameters particularly depict an aging process such as corrosion, deposits, in particular lime, or damage to the device. In particular, the control unit determines the further control parameter as a function of the operating point, for example by reading out from a list, by evaluating a function or the like. In particular, the control unit reads the, in particular the only or the most recently stored, start value from the memory element, in particular independently of the operating point. In particular, in order to generate the control signal at the start of the output, the control unit combines the further control parameter dependent on the operating point and the control parameter specified by the start value. In particular, the same starting value of the control parameter is used for every possible value of the further control parameter. As a result of the configuration according to the invention, a required storage space can advantageously be kept small. In particular, setting the method for a specific installation site can advantageously be limited to the control parameter. In particular, setting the method for the first time or a new installation site-specific setting can advantageously be carried out quickly, in particular at any individual operating point. In particular, a volatile memory can also be used to store the end value, since after a power interruption in particular only a new installation location-specific setting of the end value has to be repeated and in particular an operating point-dependent redefinition of the further control parameter can be dispensed with.

In addition, a regulation device, in particular an apartment transfer station, with at least one fluid control unit and with at least one control unit is proposed for carrying out a method according to the invention. The regulating device is preferably designed as part, in particular as a subassembly, of an apartment transfer station. In principle, it is also conceivable that the regulating device encompasses the entire apartment transfer station. The regulating device preferably comprises at least the sensor unit. The sensor unit preferably comprises at least one temperature sensor, in particular for measuring the temperature of the output fluid. The sensor unit preferably comprises at least one further temperature sensor, in particular for measuring the temperature of the heat transfer medium. The sensor unit preferably comprises at least one flow rate sensor, in particular to measure the flow rate of the output fluid. The sensor unit optionally comprises at least one pressure sensor, in particular for measuring the pressure of the heat transfer medium. As an alternative or in addition, the regulating device comprises at least one communication unit for receiving measured values, in particular the named variables. The apartment transfer station, in particular the regulating device, preferably comprises at least the heat exchanger. A “control unit” is to be understood in particular as a unit with at least one control electronics, in particular for generating the control signal for the fluid control unit. “Control electronics” should be understood to mean, in particular, a unit with a processor unit and with the memory element as well as with an operating program stored in the memory element. The control unit preferably comprises the PI controller, in particular as part of the computing unit. The configuration according to the invention makes it possible to provide a regulating device which advantageously adapts to an installation location of the regulating device. In particular, an advantageously rapid regulating device for regulating the temperature of the dispensing fluid can be made available.

The method according to the invention and / or the regulating device according to the invention should / should not be restricted to the application and embodiment described above. In particular, the method according to the invention and / or the regulating device according to the invention can have a number of individual elements, components and units as well as method steps that differs from a number of individual elements, components and units as well as method steps mentioned herein. In addition, in the case of the value ranges specified in this disclosure, values lying within the stated limits should also be considered disclosed and can be used as required.

drawings

Further advantages emerge from the following description of the drawings. In the drawings, an embodiment of the invention is shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Fig. 1

eine schematische Darstellung einer erfindungsgemäße Regulierungsvorrichtung,

Fig. 2

eine schematische Darstellung eines erfindungsgemäßen Verfahrens und

Fig. 3

ein schematischer Verlauf eines Steuersignals im Zuge des erfindungsgemäßen Verfahrens.

Show it:

Fig. 1

a schematic representation of a regulating device according to the invention,

Fig. 2

a schematic representation of a method according to the invention and

Fig. 3

a schematic profile of a control signal in the course of the method according to the invention.

Description of the embodiment

Figure 1 shows a regulating device 26. For example, the regulating device 26 is arranged in an apartment transfer station. In particular, the apartment transfer station is connected to a closed heat circuit of a heat source 32, in particular a central buffer store and / or a central heating system. In particular, a heat transfer medium 14, in particular heated by the heat source 32, is circulated in the heat circuit. In particular, the apartment transfer station is connected to a storage or transport system of an apartment for an output fluid 12. For example, the storage or transport system is connected to an external supply line for the output fluid 12, in particular to a drinking water line. In particular, the apartment transfer station fluidly decouples the heat cycle and the storage or transport system from one another. In particular, the apartment transfer station is provided for heat transfer from the heat cycle to the storage or transport system. In particular, the apartment transfer station comprises at least one heat exchanger 34, in particular a plate heat exchanger, in particular for thermal coupling of the heat cycle and the storage or transport system. The storage or transport system preferably comprises at least one dispensing point 36, in particular a tap, for dispensing the dispensing fluid 12.

The regulating device 26 comprises at least one fluid control unit 28. The fluid control unit 28 is preferably fluidly arranged between the heat exchanger 34 and a connection of the apartment transfer station for the heat source 32. The fluid control unit 28 is preferably arranged on a flow, in particular on the heat carrier side, of the heat exchanger 34. For example, the fluid control unit 28 comprises a regulating valve. The regulating device 26 preferably comprises at least one sensor unit. The sensor unit preferably comprises at least one temperature sensor 38. The temperature sensor 38 is preferably provided for measuring the temperature of the output fluid 12. The temperature sensor 38 is preferably arranged on a further flow, in particular on the output fluid side, of the heat exchanger 34. The sensor unit preferably comprises at least one return temperature sensor 40. The return temperature sensor 40 is preferably arranged on a return of the heat exchanger 34, in particular on the heat carrier side. The sensor unit preferably comprises at least one flow temperature sensor 42. In particular, the flow temperature sensor 42 is arranged on the flow, in particular on the heat carrier side, of the heat exchanger 34. In particular, the fluid control unit 28 is fluidly arranged between the flow temperature sensor 42 and the heat exchanger 34. The sensor unit preferably comprises at least one flow rate sensor 44. The flow rate sensor 44 is preferably arranged in a return of the heat exchanger 34, in particular on the output fluid side. The regulating device 26 comprises at least one control unit 30. The control unit 30 is provided for carrying out a method 10, which is described in FIG Figure 2 is described. The control unit 30 preferably comprises a PI controller, in particular a P element 46 and in particular an I element 47, see Figure 2 .

Figure 2 shows the method 10. The method 10 is provided for regulating the temperature of the output fluid 12. The method 10 is preferably triggered by an actuation at the dispensing point 36, for example by actuating the tap, by a user or an external device. A setpoint temperature 66 is preferably specified by a user or an external device when the output point 36 is actuated. Preferably the output fluid 12 flows during the output through the storage and / or transport system, in particular through the heat exchanger 34. Before the output fluid 12 is output, in particular at the output point 36, heat is transferred from the heat carrier 14 to the output fluid 12. The method 10 preferably comprises a measuring step 48. The flow rate sensor 44 preferably detects a change in movement of the output fluid 12 in the measuring step 48. In particular, a flow rate measurement in the measuring step 48 triggers the temperature regulation by the control unit 30. In at least one method step, a control parameter is adapted to control the heat transfer medium 14. In particular, the control unit 30 regulates a temperature transfer from the heat carrier 14 to the output fluid 12 by means of the control of the heat carrier 14. The control preferably includes a pilot control 50. The control preferably includes a PI control, in particular via the P element 46 and / or via the I-element 47. The control unit 30 preferably creates a control signal 60 for setting 52 the fluid control unit 28. The control unit 30 preferably regulates a setting of the fluid control unit 28 through the interaction of the pilot control 50 and the PI control.

In particular, the method 10 has at least two, in particular three, different phases. In particular, the method 10 comprises an initial phase which begins at the beginning 20 of the dispensing of the output fluid 12. In particular, the method 10 includes an adaptation phase in which the adaptation 22 of the control parameter is carried out. The adaptation 22 preferably starts after a predefined delay time, in particular 15 seconds, after the start 20 of the output. In particular, the method 10 includes an end phase which is triggered by ending 54 of the dispensing of the output fluid 12. In particular, the control unit 30 determines the phase in which the method 10 is located in at least one phase determination 56.

Before the adjustment 22 of the control parameter, in particular at the beginning 20 of the output, at least one further control parameter is set and / or adapted for checking the heat transfer medium 14. The control unit 30 preferably reads a start value 18 for the control parameter at the beginning 20 of the output from the memory element of the control unit 30. At the beginning 20 of the output, the adjustment 22 of the control parameter is suppressed. In particular, the control parameter is kept constant at the starting value 18 during the delay time. In particular, the control unit 30 sets the further control parameter in the course of the pilot control 50. In particular, the control unit 30 adapts the further control parameter in the event of a change in a flow rate of the output fluid 12 to a current flow rate measured value. In the measuring step 48, in particular for the pilot control 50, the control unit 30 preferably queries the flow rate measured value of the output fluid 12 from the flow rate sensor 44. In the measuring step 48, the control unit 30 preferably queries the setpoint temperature 66 and / or a temperature measured value 64 of the output fluid 12 and / or the heat transfer medium 14 from the temperature sensor 38, the flow temperature sensor 42 and / or the return temperature sensor 40, in particular for the pilot control 50 and / or the PI control. The control unit 30 preferably selects a value for the further control parameter, in particular from a memory element of the control unit 30, on the basis of the measured values and / or the setpoint temperature 66. The control unit 30, in particular at the beginning 20 of the output, preferably uses a manipulated variable of the P element 46 as an additional control parameter. generated further control parameters and / or the, in particular generated by the P element 46, additional control parameters. The start value 18 is used independently of the further control parameter and / or the additional control parameter of the current output. In particular, the same start value 18 is used independently of a signal component 70, 72 of control signal 60 predetermined by precontrol 50 and / or P element 46.

During the adjustment 22, the control unit 30 adjusts the control parameters by means of the I element 47, in particular on the basis of the starting value 18. The adaptation 22 of the control parameter is independent of a flow rate of the output fluid 12. Preferably, the adaptation 22 is dependent on the setpoint temperature 66 and / or the temperature measured value 64 of the output fluid 12 and / or the heat transfer medium 14. In particular, the P element 46 reduces the additional control parameter after the delay time, in particular due to the gradual adaptation 22 of the control parameter by the I-element 47. In particular, the additional control parameter is adapted in the adaptation 22 in order to react to a change in the setpoint temperature 66. In particular, the additional control parameter is zeroed in the course of the adaptation 22, in particular if the setpoint temperature 66 is kept constant. In particular, the control signal 60 during the adaptation 22 is based on the control parameter, in particular generated by the I element 47, the further control parameter generated in particular by the precontrol 50, and / or the additional control parameter generated in particular by the P element 46 .

In particular, the adaptation 22 ends when the output is ended 54 by a user and / or by an external device. In particular, the control unit 30 ends the adaptation 22 when a flow rate measurement value falls below a threshold value. When the output is ended 54, the control unit 30 preferably reads out an end value 16 of the control parameter reached during the adaptation 22, in particular from the I element 47. The control unit 30 optionally carries out a consistency check on the end value 16. Depending on the end value 16 of the control parameter of the current output, the start value 18 of the control parameter for a further output of the output fluid 12 is determined. In a storage process 58, the end value 16 of the control parameter is stored as the start value 18 of the control parameter for the further output of the output fluid 12. A manipulated variable of the control-related I element 47 is stored as the end value 16 of the control parameter. The final value 16 is stored independently of a rate of change of the control parameter. In particular, a course of the control parameter up to the end value 16 can rise, fall, oscillate or be stable. The control parameter can in particular be adapted in a single issue or distributed over several issues. In particular, even after a first adjustment to the system parameters, the control parameter is continuously adapted to changes in the system parameters, for example due to corrosion or deposits, by means of further outputs. The final value 16 is saved as a single value without being linked. In particular, the end value 16 is not stored in an added-up form with the further control parameter and / or the additional control parameter. Optionally, the end value 16 is stored together with, in particular simultaneously with, but separately from, at least one operating parameter.

Figure 3 shows a schematic profile of the control signal 60 and a temperature profile 62 in a common diagram. In particular, the control signal 60 is provided to match the measured temperature value 64 to the setpoint temperature 66 up to a tolerance. The control signal 60 is shown by way of example for a first output and a further output taking place after the first output, reference characters of the further output being identified by an apostrophe. During an output, the control signal 60 preferably comprises at least one signal component 68, 68 ′ which is dependent on the control parameter. During an output, the control signal 60 comprises in particular at least one further signal component 70, 70 ′ which is dependent on the further control parameter. During an output, the control signal 60 optionally includes an additional signal component 72 which is dependent on the additional control parameter. The signal component 68, 68 ′ is adapted in particular by the I element 47 as a function of system parameters of the regulating device 26 or is specified by the starting value 18. The further signal component 70, 70 'is specified in particular by the pilot control 50 as a function of an operating point. The additional signal component 72 is adapted in particular by the P element 46 as a function of a difference between the setpoint temperature 66 and the measured temperature value 64. In particular, the additional signal component 72 is zeroed by adapting the further signal component 70. When the first output is ended 54, the end value 16 of the control parameter is stored, in particular so that at the beginning 20 'of the further output, the signal component 68' no longer needs to be adapted or only slightly compared to the first output. A determination rule for the further control parameter for determining the further control parameter as a function of an operating point, in particular the flow rate, the measured temperature value 64 and / or the setpoint temperature 66, is kept constant. In particular, the further signal component 70, 70 'specified by the pre-control 50 is identical for outputs with the same operating point. The additional signal component 72 is, in particular, the smaller the further the signal component 68, 68 'has already been adapted to the system parameters.

Claims (14)

A method for regulating the temperature of an output fluid (12), wherein in at least one method step before the output fluid (12) is discharged, heat is transferred from a heat transfer medium (14) to the output fluid (12), wherein in at least one method step a control parameter is used to control the Heat transfer medium (14) is adapted, characterized in that in at least one method step depending on an end value (16) of the control parameter of the current output, a start value (18) of the control parameter for a further output of the output fluid (12) is determined. Method according to Claim 1, characterized in that, in at least one method step, the end value (16) of the control parameter is stored as the start value (18) of the control parameter for the further output of the output fluid (12). Method according to Claim 1 or 2, characterized in that, in at least one method step, a control value of a control-related integral element is stored as the end value (16) of the control parameter. Method according to one of the preceding claims, characterized in that an adjustment (22) of the control parameter is prevented in at least one method step at the beginning (20) of the output. Method according to one of the preceding claims, characterized in that in at least one method step before an adjustment (22) of the control parameter, at least one further control parameter is set and / or adapted for checking the heat transfer medium (14). Method according to one of the preceding claims, characterized in that in at least one method step an adjustment (22) of the control parameter is independent of a flow rate of the output fluid (12). Method according to one of the preceding claims, characterized in that in at least one method step at the beginning (20) of the output at least one additional control parameter for checking the heat transfer medium (14) is set and / or adapted. Method according to one of the preceding claims, characterized in that the final value (16) is stored together with at least one operating parameter in at least one method step. Method according to one of the preceding claims, characterized in that a consistency check of the end value (16) is carried out in at least one method step for determining the start value (18). Method according to one of the preceding claims, characterized in that, in at least one method step, the end value (16) is stored as a link-free individual value. Method at least according to Claim 5, characterized in that a determination rule for the further control parameter for determining the further control parameter is kept constant as a function of an operating point. Method according to one of the preceding claims, characterized in that the final value (16) is stored independently of a rate of change of the control parameter. Method according to one of the preceding claims, characterized in that the start value (18) is used independently of a further control parameter and / or an additional control parameter of the current output. Regulation device, in particular apartment transfer station, with at least one fluid control unit (28) and with at least one control unit (30) for carrying out a method according to one of Claims 1 to 13.

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