Assembly comprising at least one centrifugal pump assembly and one HMI

Abstract

The utility model relates to an assembly comprising at least one first centrifugal pump assembly and an HMI, the first centrifugal pump assembly is composed of a motor, a centrifugal pump capable of being driven by the motor and a pump electronic system used for controlling and / or adjusting the motor according to normal operation. The HMI has a display screen and at least one operating element for operating settings for normal operation, and the pump electronics are arranged in the first housing, have an electrical interface, and do not have its own or only have limited capabilities for modifying the operating settings. The HMI is a module having a second housing, which is entirely closed, and having an electrical interface for temporary direct placement on the first housing for operating settings, such that the HMI module and the pump electronics are electrically connected to each other in the placed state, the HMI module being removable from the first housing, and the HMI module being removable from the second housing. And the first centrifugal pump assembly is configured to operate indefinitely normally without an HMI module.

Description

TECHNICAL FIELD

[0001] The utility model relates to an assembly comprising at least one first centrifugal pump assembly and one HMI (human machine interface), wherein the first centrifugal pump assembly is composed of an electric motor, a centrifugal pump drivable by the electric motor and a pump electronics system for controlling and / or regulating the electric motor depending on normal operation, and the HMI has a display and at least one operating element for operating settings for normal operation, wherein the pump electronics system is arranged in a first housing, has an electrical interface and has no or only limited ability to change operating settings itself. BACKGROUND

[0002] Centrifugal pump assemblies have different setting possibilities. A possibility to simply set a centrifugal pump assembly is disclosed, for example, in European patent EP 1 199 530 B1. Modern centrifugal pump assemblies have many different control methods and regulation methods which are executed in the operating software and special functions which can be activated in order to adapt the centrifugal pump assembly in the best possible way to a predefined application in which the centrifugal pump assembly is intended to be operated conventionally. It goes without saying that for this adaptation a corresponding operating setting, also called configuration, of the centrifugal pump assembly is required. In order to be able to adjust all possible operating settings, for example the selection of a specific control method or regulation method, the activation or deactivation of additional functions or special functions or the predefinition of operating parameter values such as head, rotational speed, volume flow or temperature setpoint values or PID values for a PID controller, conveniently, user-friendly, clearly and operationally safely, the centrifugal pump assembly usually has one HMI (Human Machine Interface) with at least one operating element, for example in the form of a rotatable and / or pressable operating button, in order to select and change specific operating settings. For this purpose, the different operating settings are displayed in the form of a menu in a graphical user interface (GUI) on the display. An example of a correspondingly adjustable centrifugal pump assembly is disclosed, for example, in European patent EP 3376315 B1. The software required for this is a component of the operating software of the centrifugal pump assembly. The HMI is usually an integral component of the pump electronics system, i.e. integrated into the pump electronics system housing, so that it can be accessed from the outside. It is often a component of the cover of the housing which encloses the electrical and electronic components of the pump electronics system within the housing.

[0003] An HMI is an operating interface that allows a user to interact with a machine, here a centrifugal pump assembly, for operating the machine and for implementing corresponding settings on the machine or for retrieving information on the operation of the machine. For this purpose, an HMI comprises at least one display element and at least one operating element. Both components have developed over the past decades in line with the requirements and technical progress of centrifugal pump assemblies. Thus, a display element can in the simplest case be a discrete light point, for example realized by means of a light emitting diode (LED) or a 7-segment display, or even a graphic color display. In addition, an operating element can in the simplest case be a push button, a toggle switch or a rotary switch, alternatively a potentiometer or a pulse signal generator, wherein a plurality of these individual operating elements can also be combined into a larger, functionally integrated operating element, as in the case of a navigation button. Today, both simple and complex HMIs are found in centrifugal pump assemblies.

[0004] While the HMI simplifies the operation of a centrifugal pump assembly and makes it possible at least to some extent, the existence of an HMI is not without drawbacks. Since the development and production of an HMI leads to an increased, complexified and prolonged manufacturing process of a centrifugal pump assembly. In addition, in the case of an HMI with a display screen having TFT-LCD (liquid crystal display) technology, the centrifugal pump assembly is also subject to certain temperature limitations, which limit its range of application, since the polarizing plate of the display screen no longer functions at temperatures above 60°C. Furthermore, for the display and operating elements, openings are required in the housing of the pump electronics system, which increase the risk of foreign bodies, in particular moisture and dust particles, penetrating into the interior of the pump electronics system and causing damage. In order to prevent this, the openings need to be sealed, which also complicates the manufacture of a centrifugal pump assembly. A further disadvantage of an HMI is the existing operating risk, since anyone, i.e. an unauthorized or unqualified person, can at any time change the operating settings of a centrifugal pump assembly. In view of these disadvantages, it makes more sense to dispense with a human-machine interface in a centrifugal pump assembly than to provide one. In addition, without an HMI, the electromagnetic compatibility of the pump electronics system can also be better shielded. However, dispensing with it means that there is no option to configure or set the operating settings of a centrifugal pump assembly directly, i.e. on the pump electronics system.

[0005] One possibility to solve this disadvantage is the use of a radio-based remote configuration, for example by means of a software application (App) in a smartphone which communicates via radio, for example Bluetooth or NFC (Near Field Communication), with the centrifugal pump assembly. In this case, when the software application is opened, the smartphone is in fact the HMI of the centrifugal pump assembly, on the one hand for which the operating settings can be made and on the other hand for which the operating information, operating values and measured values of the centrifugal pump assembly can be read. However, the radio-based configuration of the centrifugal pump by means of a smartphone also has disadvantages, since it is firstly not secure in terms of data technology, secondly, in some countries a radio license is required for each radio standard used by the centrifugal pump assembly, and thirdly, radio-based remote configuration is prohibited in some countries. Utility model content

[0006] It is therefore an object of the utility model to overcome the disadvantages of the prior art and to provide an alternative for making operating settings for a centrifugal pump assembly.

[0007] This object is achieved by an assembly according to the utility model, comprising at least one first centrifugal pump assembly and an HMI, the first centrifugal pump assembly consisting of an electric motor, a centrifugal pump which can be driven by the electric motor and a pump electronics system for controlling and / or regulating the electric motor in accordance with normal operation, and the HMI having a display and at least one operating element for making operating settings for normal operation, the pump electronics system being arranged in a first housing, having a first electrical interface and having no or only limited ability to change operating settings itself. The HMI is a module which has a second, self-contained, fully enclosed housing and has a second electrical interface for temporary direct mounting on the first housing for making operating settings, such that in the mounted state the HMI module is in electrical connection with the pump electronics system, wherein the HMI module can be removed from the first housing, and the first centrifugal pump assembly is set up for indefinite normal operation without the HMI module.

[0008] According to the utility model, the prior art of this type is further developed as follows, namely the HMI is a module, namely an HMI module, which has a second, self-contained, fully enclosed housing and has an electrical interface for temporary direct mounting on the first housing for making operating settings, such that in the mounted state the HMI module is in electrical connection with the pump electronics system, wherein the HMI module can be removed from the first housing, and the first centrifugal pump assembly is set up for indefinite normal operation without the HMI module. Normal operation means the operation set up for the centrifugal pump assembly after the operating settings have been made.

[0009] Thus, the core idea of the present utility model provides that the HMI and the pump electronics system are structurally separated by the following means, namely, they have mutually independent housings, which are only assembled together when needed. The HMI as a module is a separate, closed component except for the interface, which supplements the functionality of the centrifugal pump assembly when needed, namely, by the possibility of operating settings via the display screen and operating elements and in connection therewith. In addition, the operating settings, operating values and measured values can also be called up and displayed on the display screen. Thus, radio communication with the centrifugal pump assembly can be dispensed with, thereby eliminating the associated disadvantages.

[0010] Since the pump electronics system and the HMI module have their own housings, removing the HMI module from the first housing does not open the pump electronics system and thus does not touch the live parts that are hazardous to humans.

[0011] In addition, the present utility model provides a centrifugal pump assembly in connection with the use of the HMI module of the present utility model, which does not have its own or only has a limited ability to change operating settings. This means that the centrifugal pump assembly has at least one adjustment parameter in the operating software or at least one activatable function in the operating software due to the basic settings of the factory, which cannot be adjusted or activated on the pump electronics system itself, i.e. without the HMI module. In other words, the HMI module provides or supplements the ability to change operating settings that is not available or limited in the pump electronics system. Thus, the centrifugal pump assembly can be configured with operating settings that cannot be achieved by the setting possibilities on the centrifugal pump assembly itself by means of the attachable HMI module.

[0012] At least when the centrifugal pump assembly does not have its own HMI, there is no ability to change operating settings. In addition, if the centrifugal pump assembly has an HMI, but the HMI is technically simple in structure, so that only a small number of settings can be made using the HMI, the ability to change operating settings is also limited. Such an HMI - hereinafter referred to as a "basic" HMI - has no display screen. For example, it can consist of only one or a small number of discrete light points and a rotary knob or button.

[0013] The present utility model therefore preferably relates to a centrifugal pump assembly without an HMI or at most with a basic (non-functional) HMI, i.e. without a display screen. Thus, at least the first centrifugal pump assembly, preferably both centrifugal pump assemblies, can have no HMI of its own or at most a basic HMI without a display screen. In a variant embodiment, the operating settings that can be implemented in the pump electronics system with a basic HMI can only be the selection of one of two or three operating modes and / or the setting of the rotational speed or head of the centrifugal pump assembly, if necessary.

[0014] Thus, the centrifugal pump assembly benefits from the present invention in that it does not need its own HMI. Thus, the centrifugal pump assembly can be operated without an HMI or can be operated normally without an HMI module. This simplifies the design structure of the pump electronics system, reduces its production costs, improves the operating safety due to the saved components and expands the range of application of the centrifugal pump assembly to applications in which the temperature on the pump electronics system 4 is higher than 60°C.

[0015] From an environmental point of view, the present invention contributes to sustainability because fewer electronic components need to be handled due to the omission or at least simplification of the HMI in the centrifugal pump assembly. The present invention saves resources and reduces carbon dioxide emissions during the manufacture of the centrifugal pump assembly.

[0016] Finally, the centrifugal pump assembly is protected against deliberate misadjustment (tampering) and unintentional misadjustment by inexperienced users, because only the HMI module of the present invention has access to all setting possibilities of the centrifugal pump assembly. Since the HMI module is not an essential component of the centrifugal pump assembly, i.e. it can also be operated without an HMI module, the HMI module can be kept separately, in particular by an experienced professional authorized to configure and change the operating settings.

[0017] If one considers that the HMI module of the present invention can be used not only for the operating settings (configuration) of one single centrifugal pump assembly, but preferably for any number, in particular a large number, of centrifugal pump assemblies, and that these centrifugal pump assemblies do not need their own HMI, at least not an HMI with a display, this shows the particular advantage of the present invention. Thus, the centrifugal pumps can save many displays, in the best case many HMIs, which again underlines the sustainability of the technical solution of the present invention. This is therefore also particularly advantageous, because the HMI is usually only used at the initial commissioning for setting the centrifugal pump assembly to the specific installation situation. After the initial configuration, the centrifugal pump assembly is usually not set further, because the requirements for the hydraulic system usually no longer change.

[0018] It is therefore proposed that the assembly comprises at least one second centrifugal pump assembly in addition to the first centrifugal pump assembly. The second centrifugal pump assembly, like the first centrifugal pump assembly, can consist of an electric motor, a centrifugal pump which can be driven by the electric motor, and a pump electronics system for controlling and / or regulating the electric motor in accordance with normal operation, which is arranged in a first housing, has an electrical interface and has no or only limited ability to change the operating settings of the second centrifugal pump assembly itself. In order to make operating settings to the second centrifugal pump assembly, the HMI module can alternatively also be placed onto the first housing of the second centrifugal pump assembly, so that in the placed state the HMI module and the pump electronics system of the second centrifugal pump assembly are electrically connected to one another. The HMI module can also be removed again from the first housing of the second centrifugal pump assembly, and the second centrifugal pump assembly is set to normal operation without the HMI module indefinitely. The HMI module can therefore be plugged onto the first centrifugal pump assembly or the at least one second centrifugal pump assembly, as desired.

[0019] A further advantage of the utility model lies in that the HMI module can span a series of pumps, and in the best case can even be used for all centrifugal pump assemblies with a corresponding interface. It is therefore not specific to a pump series to which the centrifugal pump assembly belongs. The first centrifugal pump assembly can therefore belong to a first pump series, and the second centrifugal pump assembly can belong to a second pump series, wherein the first and second pump series are structurally different from one another.

[0020] For example, the first and second centrifugal pump assemblies can differ at least in one of the following characteristics:

[0021] - the structural form of the first housing,

[0022] - the structural dimensions of the first housing,

[0023] - the electrical power rating of the electric motor,

[0024] - the functional scope of the pump electronics system, and / or

[0025] - the design structure of the pump electronics system,

[0026] The HMI module is independent of these mentioned characteristics because it has a separate housing.

[0027] In one variant embodiment, the electrical interface of the pump electronics system can be a socket, and the electrical interface of the HMI module can be a plug which protrudes from the second housing, wherein the socket and the plug are plugged into one another in the connected state of the HMI module and the pump electronics system. The placement / installation of the HMI module is therefore also a plugging.

[0028] Unless the first and second centrifugal pump assembly are distinguished in the following text, the first centrifugal pump assembly is meant, since the two centrifugal pump assemblies are interchangeable.

[0029] The electrical interface, preferably consisting of a plug of the HMI module and a socket of the second centrifugal pump assembly, is proprietary. It is therefore not a standardized interface that is used equally by different manufacturers. It is therefore only possible to configure the centrifugal pump assembly by means of the HMI module or by means of a further device specified by the centrifugal pump assembly manufacturer. This increases the tamper resistance.

[0030] The socket of the pump electronics system is preferably accessible through an opening in the first housing. Conventionally, the plug of the HMI module is guided through this opening in order to be connected to the socket. However, the opening can be closed by a plug when the socket is not in use. Ideally, this plug can be resilient in order to simultaneously act as a seal.

[0031] In addition, a removable cover can be provided for the plug, which covers the plug completely when the HMI module is not in use.

[0032] The housing of the HMI module can have a smaller installation space than the pump electronics system, which simplifies the handling of the HMI module.

[0033] In addition, the housing of the HMI module can have a size of less than 8 cm, in particular less than 5 cm. In other words, there is no dimension (length, height, width) of more than 8 cm, in particular more than 5 cm. This even makes it possible to carry the HMI module in a trouser pocket.

[0034] It is advantageous if the HMI module can be removed from and / or plugged onto the first housing, i.e. the housing of the centrifugal pump assembly, during continuous operation. Thus, it is not necessary to switch off the centrifugal pump assembly in order to remove and plug the HMI module.

[0035] An electronic system, which controls a display screen, detects and analyzes the operation of the operating elements, is installed in the housing of the HMI module. In a variant embodiment, this can be the only function of the HMI module. In any case, it does not participate in the control or regulation of the electric motor, more precisely of the centrifugal pump. Instead, these tasks are carried out by the pump electronics system, which for this purpose has a frequency converter, in order to be able to set the motor speed variably according to a rating specification or according to a regulation method determined and selectable in the operating software. The operating software of the centrifugal pump assembly is also only a component of the pump electronics system.

[0036] The electronic system of the HMI module can thus be configured to be relatively simple and compact in structure, which facilitates the HMI module, more precisely its housing, having a small structural volume.

[0037] It is expedient if the data required for displaying the operating settings and the program code required for this are not stored on the HMI module, but are part of the operating software of the pump electronics system. This makes the HMI module universal. The HMI module can thus be used in different centrifugal pump assemblies, that is to say in two or more centrifugal pump assemblies which differ in terms of the operating parameters which can be viewed or set, or in terms of the functions which can be activated, in terms of the operating or measured values.

[0038] In a variant embodiment, a bus-based communication connection can be used between the pump electronics system and the HMI module, wherein the HMI module is a bus user which is connected to the communication bus used in the pump electronics system by means of a plug-in or plug-in connection. By means of this communication technology system architecture between the pump electronics system and the HMI module, the HMI module can be removed from the centrifugal pump assembly during ongoing operation. The communication bus can be a conventional, in particular standardized, bus, such as a CAN (Controller Area Network) bus. In a variant embodiment, the communication bus can only exist between the processor of the pump electronics system and the HMI module, or according to another variant embodiment, further components of the pump electronics system can also be connected to one another by means of communication technology.

[0039] In order to improve data security, the communication between the pump electronics system and the HMI module can be encrypted.

[0040] According to a development, the HMI module can have a non-volatile memory for storing a data set which defines the complete or partial operating settings, in particular the current operating settings, of a first centrifugal pump assembly. In addition, the HMI module can be set up in such a way that the memory can be accessed by the pump electronics system, so that the pump electronics system can transfer data sets into this memory, or in reverse read and set data sets from the memory. The respective pump electronics system can thus access the memory. On the one hand, this enables a plurality of centrifugal pump assemblies to be quickly configured with the same operating settings. On the other hand, the operating settings can thus be transferred from a first centrifugal pump assembly to a second centrifugal pump assembly, for example when the first centrifugal pump assembly has to be replaced. A defined operating setting can thus be made on a first centrifugal pump assembly, which operating setting is stored in the HMI module as a data set, and then "loaded" directly from the memory of the HMI module onto a second centrifugal pump assembly after the HMI module has been attached to the second centrifugal pump assembly. This can be said to be realized as a push-button configuration.

[0041] According to an alternative or complementary development, the HMI module can have a non-volatile memory in which at least one authorization identifier is stored. This non-volatile memory can be the same memory in which the aforementioned data sets are stored, or it can also be a second memory. The authorization identifier is loaded onto the HMI module before the HMI module is used, for example in the factory or by a technical after-sales service.

[0042] In addition, an identifier of the first centrifugal pump assembly can also be stored in the pump electronics system of the first centrifugal pump assembly. The HMI module and the pump electronics system are then configured to compare the identifier with the at least one authorization identifier after the HMI module is connected to the pump electronics system, and to permit the modification and / or access to the operating settings only if the identifier of the centrifugal pump assembly corresponds to the authorization identifier or can at least be derived from the authorization identifier. This provides additional protection for the centrifugal pump assembly, since the operating settings of the centrifugal pump assembly can only be changed or viewed via the HMI module if the HMI module is authorized or unlocked. This authorization / unlocking of the HMI module is achieved by storing the authorization identifier in the memory.

[0043] The authorization identifier can be, for example, a serial number of the centrifugal pump assembly. Alternatively, the authorization identifier can identify a group of identifiers of centrifugal pump assemblies. In this case, it is more general than a serial number and detects, for example, a complete stock of serial numbers. Thus, the HMI module is authorized not only to access one unique centrifugal pump assembly, but also to access a defined group, for example a defined pump series, so that the HMI module does not function in other pump series.

[0044] In a variant embodiment, it can be provided that the pump electronics system and the HMI module are configured to transfer the identifier of the first centrifugal pump assembly from the pump electronics system to the HMI module and store it there as an authorization identifier in the state of mutual connection. This enables the pairing of the HMI module with the centrifugal pump assembly. This ensures that only this unique HMI module is authorized to configure the centrifugal pump assembly.

[0045] As already mentioned, it is advantageous if the HMI module does not participate in the control or regulation of the electric motor, more precisely of the centrifugal pump, but only manipulates the display and detects and evaluates the operation of the operating elements, and in addition, the data required for the display of the operating settings and the program code required for this are not stored on the HMI module, but are part of the operating software of the pump electronics system, since the electronics system of the HMI module and its programming would then be simple, and in addition, the HMI module can be used universally, i.e. not pump-specifically.

[0046] Furthermore, it can be provided that the operating settings of the centrifugal pump assembly are not predetermined in the electronic system of the HMI module, but are predetermined by the HMI module changing at least one operating parameter directly in the operating software of the centrifugal pump assembly, which is part of the pump electronics system. The advantage is that the entire operating settings do not have to be transmitted to the HMI module first and then transferred back after the changes. Thus, no memory space is required in the HMI module for the operating settings, and the necessary data communication between the pump electronics system and the HMI module is kept to a minimum.

[0047] The feature of the HMI module changing at least one operating parameter directly in the operating software of the centrifugal pump assembly can also apply to the variant embodiment in which a data set defining an operating setting is stored in the HMI module, since this storage serves another purpose, namely copying the operating settings of a first centrifugal pump assembly to a second centrifugal pump assembly or configuring the first and second centrifugal pump assemblies identically. However, it is completely possible in a variant embodiment to first transfer the operating settings of the centrifugal pump assembly completely from the pump electronics system to the HMI module, make changes there, and then transfer them back to the pump electronics system.

[0048] It is clear from the above description that the application relates not only to the assembly described, but also to the use of an HMI having a display screen and at least one operating element for the operating settings of a centrifugal pump assembly, which is composed of an electric motor, a centrifugal pump that can be driven by the electric motor, and a pump electronics system for controlling and / or regulating the electric motor, which is arranged in a first housing, has an electrical interface in the form of a socket, and has no or only limited ability to change the operating settings itself, wherein the HMI is a module having a second, completely closed housing of its own and an electrical interface in the form of a plug that protrudes from the housing, in order to be placed on the first housing for the operating settings, temporarily and detachably, so that in the mounted state the plug and the socket are in an electrically conductive plug connection to carry out the operating settings.

[0049] The HMI module and the centrifugal pump assembly according to the application can have the features already described above, to which reference is made to avoid repetition.

[0050] Furthermore, as already mentioned, the added value of the HMI module is that it is not necessarily used for the configuration or the running setting of the centrifugal pump assembly, but can also be used to read the running values and / or the measured values of the running parameters of the current running setting from the pump electronics and to display them on the display screen, since for this purpose neither the HMI module nor the pump electronics has to be specially set up. Rather, the same steps are carried out in data technology and in process technology as when the running setting is carried out, since only the point in time at which the HMI module is plugged into the pump electronics is a different point in time, namely the point in time at which the user wants to know the running parameter values and / or the measured values of the current running setting.

[0051] The first and / or second centrifugal pump assembly is preferably a compact unit, that is to say a structural combination of centrifugal pump, electric motor and pump electronics.

[0052] For example, the first and / or second centrifugal pump assembly is a wet-running rotor pump.

[0053] It is pointed out that the centrifugal pump assembly does not only have limited setting possibilities. The setting possibilities themselves are also limited by the physical limits of the centrifugal pump assembly. Thus, the centrifugal pump assembly has different maximum lifts or rotational speeds, for example. In an advantageous embodiment, it can be provided that the HMI module obtains a data set from the memory of the pump electronics of the centrifugal pump assembly, which data set comprises limit values for the adjustable running values of the connected centrifugal pump assembly, and takes these limit values into account when the running setting is carried out by the HMI module. Thus, the safety against incorrect settings is increased.

[0054] Further features, advantages and characteristics of the present utility model are explained below with reference to embodiments and to the drawings. The reference signs in the drawings always denote identical or equivalent elements, regions, directions or position information. BRIEF DESCRIPTION OF DRAWINGS

[0055] It is pointed out that the terms "having", "including" or "comprising" in the scope of the specification do not exclude the presence of further features. In addition, the indefinite article "a" or "an" does not exclude a plurality, also in the claims. The drawings show:

[0056] Figure 1 is a centrifugal pump assembly with a full-featured prior art HMI with a display screen;

[0057] Figure 2 is a centrifugal pump assembly with a prior art HMI without a display screen;

[0058] Figure 3 is a front perspective view of an HMI module with a display screen;

[0059] Figure 4 is a front perspective view of an HMI module without a display screen,Figure 3 perspective rear view of the HMI module of

[0060] Figure 5 is an exploded view of the HMI module of Figure 3

[0061] Figure 6a is an assembly of the HMI module of Figures 3 to 5 and a first centrifugal pump assembly in an uninstalled state;

[0062] Figure 6b is an assembly of the HMI module of Figures 3 to 5 and a first centrifugal pump assembly in an installed state;

[0063] Figure 7a is an assembly of the HMI module of Figures 3 to 5 and a second centrifugal pump assembly in an uninstalled state;

[0064] Figure 7b is an assembly of the HMI module of Figures 3 to 5 and a second centrifugal pump assembly in an installed state.

[0065] Figure 8a is an assembly of the HMI module of Figures 3 to 5 and a third centrifugal pump assembly in an uninstalled state;

[0066] Figure 8b is an assembly of the HMI module of Figures 3 to 5 and a third centrifugal pump assembly in an installed state;

[0067] Figure 9a is an assembly of the HMI module of Figures 3 to 5 and two centrifugal pump assemblies in an uninstalled state;

[0068] Figure 9b is an assembly of the HMI module of Figures 3 to 5 and two centrifugal pump assemblies in a state where the HMI module is installed in one of the centrifugal pump assemblies;

[0069] Figure 10 is a schematic view of the versatility of the HMI module of Figures 3 to 5 for various centrifugal pump assemblies. DETAILED DESCRIPTION

[0070] In Figure 1 ​A prior art centrifugal pump assembly 1a is shown in Fig. 1. The centrifugal pump assembly consists of an electric motor 3, a centrifugal pump 2 which can be driven by the electric motor, and a pump electronics system 4 for controlling and / or regulating the electric motor in accordance with normal operation. The electric motor 3, the centrifugal pump 2 and the pump electronics system 4 form a structural unit. Thus, the electric motor 3 is fastened to a corresponding mounting flange of the pump housing by means of a mounting flange of the motor housing, and the pump electronics system 4 is mounted on the electric motor 3, more precisely on an axial end face of the electric motor. However, the pump electronics system 4 can also be arranged on the side of the electric motor 3.

[0071] The centrifugal pump assembly 1a is a wet-running rotor pump. It is provided, for example, for use in a heating installation or a cooling installation or in a drinking water circuit.

[0072] The pump electronics system 4 comprises a housing 5 and a control and regulation electronics system arranged in the housing 5. The housing 5 is fully closed towards the outside, the housing can be open towards the electric motor 3, since the electric motor 3 then closes the housing 5. The housing 5 here consists of a housing lower part 5a and a housing upper part 5b. The housing lower part 5a is mounted on the electric motor 3, while the housing upper part 5b forms a cover for the housing lower part 5b and covers the control and regulation electronics system. The control and regulation electronics system comprises a frequency converter for setting an arbitrary rotational speed for the electric motor 3 and comprises a running software which implements the control and / or regulation and performs other functions, such as process monitoring, communication with external devices or recording or evaluation of measured values. The centrifugal pump assembly 1a is supplied with a supply voltage by means of a power connection plug 11 which is plugged on the side of the housing 5, more precisely on the side of the housing lower part 5a.

[0073] In addition, the pump electronics system 4 also comprises a full-featured HMI (Human Machine Interface) 6a which is arranged in the housing upper part 5b. The HMI 6a is an operating interface for the user of the centrifugal pump assembly 1a and allows, inter alia, the configuration of the centrifugal pump assembly 1a, i.e. the implementation of running settings. To this end, the HMI 6a comprises a display 7, a rotatable and pressable operating knob 8 based on a pulse signal generator, an operating key 9 and display elements 10 in the form of light-emitting diodes. The HMI 6a makes it possible to implement all running settings for the centrifugal pump assembly 1a on the display 7. To this end, a graphical user interface (GUI) is programmed in the running software, which visualizes the various running settings, for example in a menu-like structure, so that the running settings can be read and / or written. In addition, running values and, if necessary, measured values of the running software can also be interrogated and viewed via the display 7. Such an HMI 6a can be regarded as a full-featured HMI. It goes without saying that such an HMI 6a is technically complex and expensive.

[0074] Figure 2 Another centrifugal pump assembly 1 b is shown, which differs from the first centrifugal pump assembly 1 a in Figure 1 the HMI 6b of this other centrifugal pump assembly 1 b has no display screen, but instead has a dual 7-segment LED display 13 to display numerical values between 99 and 0.1 for volumetric flow, head or electrical power consumption. In addition, the HMI 6b also comprises a potentiometer-based operating knob 8 that can be rotated over a defined angle range of 270°, an operating key 9 and a display element 10 in the form of a light-emitting diode. The HMI 6b can only make limited operating settings for normal operation, i.e. purely qualitative rating value settings (low / medium / high) in one of three operating modes (constant rotational speed, constant pressure control, proportional pressure control), which are assigned to one angle range of approximately 90° of the operating knob 8. Thus, by means of the operating knob 8, the operating mode and the power or rotational speed or head are simultaneously adjusted, which are immediately displayed on the LED display 13. By means of the operating key 9, two functions can be activated, namely the unlocking function and the venting function. The two functions are distinguished by the different number of times the operating key 9 is operated (1x, 2x). The display element 10 displays whether one of the two functions is activated. Such an HMI 6a can be referred to as the most basic HMI. It goes without saying that such an HMI 6a is technically simpler and more cost-effective. However, since not all possible operating settings can be accessed or changed, it cannot adapt the centrifugal pump assembly 1 b to a large number of possible applications. Thus, the range of applications of the centrifugal pump assembly 1 b is limited.

[0075] Figures 3 to 5 An HMI according to the application in the form of a module 20 is shown, the purpose of which is to expand the simple HMI 6b of the centrifugal pump assembly 1 b or to constitute an HMI for the centrifugal pump assembly 1 d, which has no own HMI, so that in this way all possible operating settings of the centrifugal pump assembly can be accessed and thus configured. For this purpose, the HMI module 20 must be temporarily connected to the centrifugal pump assembly. However, the basic idea of the application is not to remedy technical deficiencies of existing centrifugal pump assemblies with the HMI module 20. Rather, by using a separate HMI in the form of a module that is independent of the pump electronics system 4, a fully functional HMI is dispensed with or even completely abandoned in the centrifugal pump assembly, so that in this way components that have to be disposed of at the end of the service life of the centrifugal pump assembly are saved. This idea contributes to sustainability and, in addition, reduces CO2 emissions.

[0076] Figures 3 to 5 Different views of the HMI module 20 are shown, Figure 3 a front view from the front, Figure 4is a rear view of the back, Figure 5 is an exploded view. The HMI module 20 has a self-contained, fully closed housing 21 from which an electrical interface 26 in the form of a plug protrudes for plugging the HMI 20 onto the centrifugal pump assembly. The housing 21 is composed of an upper part 21a and a lower part 21b. It encloses the HMI electronics 24, which also comprise a display 22 and two operating elements 23a, 23b in the form of pushbuttons. The electronics control the display 22 and recognize the actuation of the operating elements 23a, 23b. The housing 21 has dimensions of less than 8 cm, in particular less than 5 cm, so that no dimension (length, height, width) is greater than 8 cm, in particular greater than 5 cm.

[0077] The electrical interface is arranged in the conventional case to face the back of the centrifugal pump assembly, more precisely, to protrude from the lower part 21b, while the display 22 is arranged on the front side facing away from the centrifugal pump assembly, more precisely, on the upper part 21a, which for this purpose has a window 22a that exposes the display 22. The two operating elements 23a, 23b are arranged on the side walls opposite each other to the left and right of the display 22 and the interface 26, so that a right pushbutton 23a and a left pushbutton 23b are formed. The side walls here form an integral part of the upper part 21a, alternatively they can also be part of the lower part 21b. Upon closer inspection, the operating elements 23a, 23b each comprise an electrical pushbutton arranged on the electronics 24 and an operating surface mechanically connected to the respective pushbutton, which forms a section of the respective side wall surface.

[0078] The housing 21 of the HMI module 20 comprises two through-holes 28 for bolts for fastening the HMI module 20 to the centrifugal pump assembly if necessary. For this purpose, the through-holes 28 are open in both the upper part 21a and the lower part 21b. The inlet of the through-hole 28 in the upper part 21a is larger in diameter than the outlet of the through-hole 28 in the lower part 21b, which is configured to accommodate the head of a bolt, which thus sinks into the upper part, i.e. does not protrude from the housing 21. The through-holes 28 are arranged symmetrically to the left and right of the electrical interface 26 and approximately aligned with the interface, below the display 22.

[0079] The electrical interface 26 projects tongue-like from a base 25, for example by 3 mm to 10 mm. It consists of an elongated printed circuit board, wherein the electrical contacts of the interface 26 are printed conductors on the exposed sides of the printed circuit board, so that the interface 26 has a total of 2 x 5 = 10 contacts. However, there can also be more or fewer contacts. The base 25 is of trapezoidal cross section in order to insert the HMI module 20 in the correct direction onto the centrifugal pump assembly, that is to say to prevent an incorrect insertion direction. The base 25 is integral with the housing 21, more precisely with the lower part 21b. A seal 27 is arranged in the form of a collar, in particular injection molded, on the transition area of the base 25 to the bottom side of the housing 21. It has two annular, parallel sealing lips which, in the normal case, seal against the housing 5 of the pump electronics system 4. A cover 31 is provided for covering and protecting the electrical interface 26 when the HMI module 20 is not in use. For this purpose, the cover 31 is simply slipped over the electrical interface. It can be held on the housing 21 of the HMI module 20 by force locking or form locking or by magnetic force.

[0080] Four block-shaped fastening feet 29 project from the bottom side of the housing 21 of the HMI module 20. They are integral with the housing 21, more precisely with the lower part 21a, and extend parallel to the electrical interface 26. The fastening feet 29 are positioned side by side in pairs on opposite sides of one another, wherein two fastening feet 29 are approximately aligned with the electrical interface 26. These two fastening feet 29 are higher than the other two fastening feet. The fastening feet 29 act as a guide for the HMI module 20 when the electrical interface 26 is connected to the centrifugal pump assembly. In addition, the fastening feet 29 can also cooperate with a locking mechanism on the centrifugal pump assembly in order to lock the HMI module 20 in its position. For this purpose, the fastening feet 29 have outwardly open transverse recesses into which one or respectively one locking element can be inserted.

[0081] As mentioned above, the HMI module 20 is provided for connection to a centrifugal pump assembly, such as the centrifugal pump assembly lb shown, Figure 2 in order to configure the centrifugal pump assembly or to view and / or change operating settings or simply to display operating and / or measurement data. The connection is therefore only temporary, that is to say in order to carry out the respective measures. For the rest of the time, the HMI module 20 is not connected to the centrifugal pump assembly lb or, if necessary, to a further centrifugal pump assembly lc... lg, for example in order to configure it.

[0082] Thus, Figure 6a Fig. shows a first assembly 30 of the utility model, comprising a centrifugal pump assembly lb and an HMI module 20. The HMI module 20 corresponds to the previously described HMI module 20, but is not connected to the centrifugal pump assembly lb. Instead, it is connected to a further centrifugal pump assembly lc. The HMI module 20 is connected to the centrifugal pump assembly lc in the same way as described above for the connection of the HMI module 20 to the centrifugal pump assembly lb. The HMI module 20 is connected to the centrifugal pump assembly lc in order to configure the centrifugal pump assembly lc or to view and / or change operating settings or simply to display operating and / or measurement data. The connection is therefore only temporary, that is to say in order to carry out the respective measures. For the rest of the time, the HMI module 20 is not connected to the centrifugal pump assembly lc or, if necessary, to a further centrifugal pump assembly ld... lg, for example in order to configure it. Figures 3 to 5The HMI module 20 is described. It is evident that the housing 21 of the HMI module 20 has a smaller structural space than the pump electronics system 4. The centrifugal pump assembly 1b essentially corresponds to... Figure 2 The centrifugal pump assembly described herein differs from the centrifugal pump assembly in that it has been modified in terms of both hardware and software technology for use with the HMI module 20 according to this invention. The centrifugal pump assembly 1b is characterized by the fact that, since it does not have its own display screen showing all operating settings, it can only change the operating settings to a limited extent, because the operation button 8 only sets one of the three operating modes and simultaneously sets one rated value, and the operation key 9 only activates one special function that is effective for a short period.

[0083] From a hardware perspective, the centrifugal pump assembly 1b adds a receiving area 18 for mounting the HMI. This receiving area 18, within the housing 5, and more specifically in the upper housing member 5a, has an opening 14 for the electrical interface 26 to pass through, two threaded holes 16 for bolting the HMI module, and four receiving holes 15 for receiving fastening feet 29. The opening 14 has an elongated shape, its shape and size corresponding to the base of the base 25, and more specifically, to the seal 27, which seals against the housing 5 when the HMI module 20 is mounted inside the opening 14. The threaded holes 16 are located on both sides of the opening 14, thus aligning with the bolt through holes 28 of the HMI module 20. The shape, size, and arrangement of the four receiving holes 15 correspond to the fastening feet 29. Additionally, the centrifugal pump assembly 1b includes two elongated locking elements (not shown) that can be inserted laterally into the lateral recesses of the fastening feet 29, that is, parallel to the bottom side of the housing 5.

[0084] It should be emphasized that the HMI module 20 can be removed from the housing 5 of the centrifugal pump assembly 1b. Regarding the short-term use of the HMI module 20 on the centrifugal pump assembly 1b, in one variant embodiment, if the HMI module 20 does not have a fastening foot 29 or only has a bolt through-hole 28 for bolt fixing, the receiving hole 15 can be omitted from the centrifugal pump assembly. Therefore, in another variant embodiment, if the HMI module 20 does not have a bolt through-hole 28 or only has a fastening foot 29, the threaded hole 16 can be omitted from the centrifugal pump assembly. In another variant embodiment, the centrifugal pump assembly may only have an opening 14 in the mounting area 18, that is, neither a threaded hole 16 nor a receiving hole 15. The HMI module 20 then lacks a fastening foot 29 in this variant embodiment.

[0085] Furthermore, from a hardware-technical point of view, the pump electronics system 4 of the centrifugal pump assembly 1 b is provided with an electrical interface 12 in the form of a socket, which is accessible through an opening 14. Thus, in order to connect the HMI module 20 with the centrifugal pump assembly, it is not necessary to open the housing 5 of the pump electronics system 4. In the installed state of the HMI module 20, the plug of the electrical interface 26 of the HMI module 20 is in electrically conductive plug-in connection with the socket of the electrical interface 12 of the pump electronics system 4. The housing 21 of the HMI module 20 then rests against the housing 5 of the pump electronics system 4.

[0086] The electrical interface 12 of the pump electronics system 4 provides a connection to a communication bus, which is used within the pump electronics system 4 for data exchange between different electronic components. Thus, the HMI module 20 is connected via the electrical interface 12 of the pump electronics system 4 with the communication bus and can thus communicate with other electronic components, in particular with a processor (microprocessor, microcontroller). In this system architecture, the HMI module 20 becomes a bus user, which is connected via plugging or plug-in connection with the communication bus used within the pump electronics system 4. This makes it possible to plug in or take out the HMI module 20 during the ongoing operation of the centrifugal pump assembly 1 b. In a variant embodiment, the communication between the pump electronics system 4 and the HMI module 20 can be encrypted.

[0087] From a software-technical point of view, the centrifugal pump assembly 1 b is provided with a program code and data for displaying operating settings in a graphical user interface (GUI) although there is no display screen, i.e. the operating software of the centrifugal pump assembly. The graphical user interface can be menu-based. When the HMI module 20 is connected with the centrifugal pump assembly 1 b, this program code is executed in order to display the operating settings on the display screen 22 and to change them, if necessary, by means of the operating elements 23a, 23b. Thus, the operating settings of the centrifugal pump assembly 1 b are not given in the electronic system 24 of the HMI module 20, but by the HMI module directly changing at least one operating parameter in the operating software of the centrifugal pump assembly 1 b, which is a component of the pump electronics system 4. The centrifugal pump assembly 1 b is provided to be operated without the HMI module 20 indefinitely.

[0088] Figure 6b It is shown that the HMI module 20 is connected with Figure 6aThe combination of the centrifugal pump assembly lb shown in Fig. 1 is inserted in the receiving area 18 on the pump electronics 4 in such a way that the plug of the electrical interface 26 of the HMI module 20 is electrically plugged together with the socket of the electrical interface 12 of the pump electronics 4. In addition, in this plugged state the fastening foot 29 is inserted into the receiving hole 15. The HMI module 20 in this state makes it possible to access all operating settings and operating values and / or measured values of the centrifugal pump assembly lb by means of its display 22 and its operating elements 23a, 23b, which are displayed on the display 22 by means of the aforementioned graphical user interface by executing the program code of the operating software.

[0089] Figure 7a Fig. 2 shows a second assembly 30 of the application, which comprises a centrifugal pump assembly lc and an HMI module 20, wherein the HMI module 20 also corresponds to the HMI module 20 described above with reference to the first assembly 30, so that reference is made to the relevant detailed description. The centrifugal pump assembly lc differs from the centrifugal pump assembly lb of the first assembly 30 in that it, although likewise has a basic HMI 6c, has a less functional HMI than the basic HMI 6b of the centrifugal pump assembly lb in the first assembly 30. Thus, the HMI 6c of the centrifugal pump assembly lc in the second assembly 30 has no operating keys and no display elements, but only one operating knob 8, which can set one of two regulated operating modes and at the same time can specify the power qualitatively, i.e. between 20% and 100%, respectively, or the head qualitatively. Figures 3 to 5

[0090] In addition, the centrifugal pump assembly lc in the second assembly 30 is also a wet-running rotor pump, which comprises the structural combination of the centrifugal pump 2, the electric motor 3 and the pump electronics 4 in an externally closed housing 5. The centrifugal pump assembly lc also has a receiving area 18 for an HMI module 20 on the housing 5, which has already been described with reference to the first assembly 30. Figure 7a Figure 6a This has already been described with reference to the centrifugal pump assembly lb, so that reference is made to the relevant detailed description. In addition, the centrifugal pump assembly lc also has an electrical interface 12 in the form of a socket, which is accessible through the opening 14 in the receiving area 18 for an HMI module 20. The electrical interface 12 of the pump electronics 4 likewise provides a connection to a communication bus, which is used for data exchange between different electronic components in the pump electronics, in particular for data exchange with a processor, with which the HMI module 20 is connected in a data-technological manner in the installed state. Finally, the centrifugal pump assembly lc also comprises a graphical user interface for displaying its operating settings, which forms part of the program code of the operating software, although the centrifugal pump assembly lc has no display.

[0091] Figure 7b ​​The HMI module 20 is shown in combination with Figure 7a the centrifugal pump assembly 1c shown in Fig. 1c. Here, the HMI module 20 is also plugged onto the pump electronics 4 in the receiving area 18, so that the respective electrical interfaces 12 and 26 are connected to each other. The HMI module 20 can also enable access to all operating settings of the centrifugal pump assembly 1c and to their operating values and / or measured values in the installed state by means of its display 22 and its operating elements 23a, 23b, which are displayed on the display 22 by means of the aforementioned graphical user interface.

[0092] Figure 8a Fig. 3 shows a third assembly 30 of the application, which comprises a centrifugal pump assembly 1d and an HMI module 20, wherein the HMI module 20 also corresponds to the HMI module 20 described above with reference to Figures 3 to 5 Figs. 1 and 2, so that reference is made to the relevant detailed description. The centrifugal pump assembly 1d differs from the previous centrifugal pump assemblies 1b, 1c in that it does not have an HMI 6c. Therefore, this centrifugal pump assembly 1d cannot be configured on site, that is to say, on the centrifugal pump assembly 1d itself, and cannot be configured without auxiliary equipment. If possible, remote control can be implemented if the centrifugal pump assembly is connected to a network. Usually, this HMI-free centrifugal pump assembly 1d is provided for applications that have only one unique operating mode, for example, a speed controller operation, in which a speed rating is given in advance via an external interface, for example, based on pulse width modulation.

[0093] Figure 8a The centrifugal pump assembly 1d in Fig. 3 is also a wet-running rotor pump, which consists of a structural combination of a centrifugal pump 2, an electric motor 3 and a pump electronics 4 in an externally closed housing 5. The centrifugal pump assembly 1d also has:

[0094] - a receiving area 18 for an HMI module 20,

[0095] - an electrical interface 12 in the form of a socket, which is accessible via an opening 14 in the receiving area 18 for the HMI module 20,

[0096] - a communication bus in the pump electronics, via which the HMI module 20 can be coupled to the system architecture of the pump electronics 4, in particular to the processor in terms of data technology, and

[0097] - a graphical user interface for displaying operating settings on the display 22.

[0098] In order to avoid repetitions, reference is made to the detailed description of the features relating to the assemblies of Figure 6a and 7a .

[0099] In order to avoid repetitions, reference is made to the detailed description of the features relating to the assemblies of Figure 6a and 7a .

[0099] Figure 8b The HMI module 20 is shown in combination with a centrifugal pump assembly Id as shown in Figure 8a Fig. 6. The HMI module 20 is also plugged in the receiving area 18 on the pump electronics system 4, so that the corresponding electrical interfaces 12 and 26 are connected to each other. The HMI module 20 can here in the installed state also make it possible to access all operating settings of the centrifugal pump assembly Id and their operating values and / or measured values by means of its display 22 and its operating elements 23a, 23b, which are displayed on the display 22 by means of a graphical user interface.

[0100] Figure 9a A fourth assembly 40 of the utility model is shown, which in this case comprises two centrifugal pump assemblies le, If and one HMI module 20, wherein the HMI module 20 can be optionally installed on one or the other centrifugal pump assembly le, If. The HMI module 20 also corresponds to the HMI module 20 described above with reference to Figures 3 to 5 and therefore reference is made to the relevant detailed description.

[0101] The first centrifugal pump assembly le of the fourth assembly 40 also has only one basic HMI 6e. This HMI 6e comprises only one operating key 9 and a plurality of display elements 10a, 10b, 10c. A first display element 10a of these display elements 10a, 10b, 10c displays the status of the centrifugal pump assembly (green = normal operation, red = fault). A first group of three display elements 10b shows the selected operating mode (constant pressure control, proportional pressure control, constant rotational speed), and a second group of three display elements 10c displays the selected characteristic curve (low, medium, high). The operating mode and the associated discrete characteristic curve are selected by repeated short pressing of the operating key 9. The selection is displayed directly by the display elements 10b and 10c. A longer pressing of the operating key 9 (3 seconds) activates the venting function, and a still longer pressing (5 seconds) restarts the operating software. The HMI 6e can therefore also only change the operating settings of the first centrifugal pump assembly le of the fourth assembly 40 to a limited extent.

[0102] The second centrifugal pump assembly If of the fourth assembly 40 also has only one basic HMI 6f. It comprises only one rotatable operating key 8 and a dual 7-segment LED display 13, which displays values between 0.1 and 9.9. The function of the rotatable operating key 8 is the same as in the centrifugal pump assembly lc of Figure 7a . Here, the basic HMI 6f can also only change the operating settings to a limited extent.

[0103] The two centrifugal pump assemblies le, If of the fourth assembly 2 are provided for cooperation with the HMI module 20. They also have:

[0104] - a receiving area 18 for the HMI module 20,

[0105] - an electrical interface 12 in the form of a socket, which is accessible through an opening 14 in the receiving area 18 for the HMI module 20,

[0106] - a communication bus in the pump electronics system, through which the HMI module 20 can be coupled in data technology with the system architecture of the pump electronics system 4, in particular with the processor, and

[0107] - a graphical user interface for displaying the operating settings on the display 22.

[0108] For the avoidance of repetition, reference is made to the detailed description of the components to Figure 6a and 7a . Furthermore, the two centrifugal pump assemblies 1e, 1f are also wet-rotor pumps, which are composed of the structural combination of the centrifugal pump 2, the electric motor 3 and the pump electronics system 4 in an externally closed housing 5.

[0109] Figure 9b The combination of the HMI module 20 with the first centrifugal pump assembly 1e of the fourth component is shown. The HMI module 20 is plugged in the receiving area 18 on the pump electronics system 4 of the first centrifugal pump assembly 1e, so that the respective electrical interfaces 12 and 26 are connected to each other. The HMI module 20 can here in the installed state also make it possible to access all operating settings and their operating values and / or measured values of the first centrifugal pump assembly 1e of the fourth component 40 by means of its display 22 and its operating elements 23a, 23b, which are displayed on the display 22 by means of the graphical user interface. Alternatively, the HMI module 20 can be plugged on the pump electronics system 4 of the second centrifugal pump assembly 1f of the fourth component, which is shown by the dashed line in Figure 9b . In this state, the same HMI module 20 can thus also access all operating settings and their operating values and / or measured values of the second centrifugal pump assembly 1e of the fourth component 40, which are displayed on the display 22 by means of the graphical user interface.

[0110] Although the components 30, 40 shown here show only one centrifugal pump assembly 1b, 1c, 1d or two centrifugal pump assemblies 1e, 1f, it goes without saying that the only HMI module 20 of the utility model can be used universally in a plurality of centrifugal pump assemblies 1b, 1c, 1d, 1e, 1f and 1g. Figure 10This is illustrated by the figures. All centrifugal pump assemblies can be operated substantially without the HMI module 20 or can be operated normally without the HMI module 20. The centrifugal pump assemblies can here belong to the same pump series, however, also to different pump series, as is the case with the centrifugal pump assemblies lb, lc, Id, le, If, which differ in the structural form and / or structural size of the pump electronics housing, in the electrical power rating of the electric motor and / or in the structure and / or functional scope of the pump electronics 4.

[0111] A common feature of all variant embodiments is that the HMI is designed as a module 20 and is structurally separated from the pump electronics 4 in that they have housings 5, 21 independent of one another which are only assembled together when required. The HMI module is a separate, closed component, with the exception of the interface 26, which supplements the functionality of the respective centrifugal pump assembly lb, lc, Id, le, If, if required, namely by means of the display 22 and the operating elements 23a, 23b. All operating settings (configurations) can thus be made directly on the centrifugal pump assembly lb, lc, Id, le, If. In addition, the operating settings, operating values and measured values can also be called up and displayed on the display.

[0112] However, the utility model is not only a functional supplement to the centrifugal pump assembly to overcome technical deficiencies from a different perspective. Rather, due to the HMI module 20 of the utility model, all centrifugal pump assemblies can henceforth be produced without their own HMI. This simplifies their design structure and the manufacture of the centrifugal pump assembly, improves the operating safety, reduces the production costs and carbon dioxide emissions and ultimately also contributes to sustainability. In addition, the range of application of the centrifugal pump assembly is also expanded to applications with a temperature on the pump electronics 4 of more than 60°C, since the display on the centrifugal pump assembly is dispensed with. In addition, radio communication with the centrifugal pump assembly can also be dispensed with, so that no radio authorization is required and the centrifugal pump assembly can also be used in countries where radio configuration is prohibited. Finally, the centrifugal pump assembly is protected against deliberate misadjustment (tampering) and inadvertent misadjustment by inexperienced users, since only the HMI module 20 of the utility model can have the authority to make all settings on the respective centrifugal pump assembly. Since the HMI module 20 is not an essential component of the centrifugal pump assembly lb, lc, Id, le, If, which can be operated even without the HMI module 20, the HMI module 20 can be kept separately, in particular by experienced professionals who have the authorization to configure and adapt the operating settings.

[0113] In a not shown variant embodiment, the HMI module 20 can have a non-volatile memory for storing a data set defining the operating settings, in particular the current operating settings, of the centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f. In addition, the HMI module can be provided for making this memory accessible to the pump electronics system 4 of this centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f, so that the pump electronics system 4 can transfer data sets into said memory or, conversely, read and set from the memory. The pump electronics system 4 can thus access said memory. This makes it possible on the one hand to quickly configure a plurality of centrifugal pump assemblies 1 b, 1 c, 1 d, 1 e, 1 f with identical operating settings. On the other hand, it is thus possible to transfer the operating settings from a first centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f to a second centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f, for example when the first centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f has to be replaced.

[0114] In order to restrict the use of the HMI module 20 of the application to one or more specific pump groups, the HMI module 20 can have a non-volatile memory in which at least one authorization identifier is stored. This non-volatile memory can be the same memory in which the aforementioned data set is stored, or a second memory. Before the HMI module 20 is used, the authorization identifier has been loaded onto this HMI module, for example in the factory or by a technical after-sales service. In addition, the identifier of the centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f can also be stored in the pump electronics system 4 of the corresponding centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f. In order to access the operating settings of the centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f via the HMI module, the authorization identifier and the identifier of the centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f must correspond. The HMI module 20 and the pump electronics system 4 are then provided for comparing the identifier with said at least one authorization identifier after the HMI module 20 is connected to the pump electronics system 4, and for allowing the operating settings to be changed and / or accessed only when the identifier of the centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f corresponds to the authorization identifier or can at least be derived from the authorization identifier. This results in the effect of additional protection of the centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f, since the operating settings of the centrifugal pump assembly can only be changed or viewed using the HMI module 20 when the HMI module 20 is authorized or unlocked. This authorization / unlocking of the HMI module 20 is achieved by storing the authorization identifier in the memory.

[0115] The authorization identifier can be, for example, a serial number of the centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f. Alternatively, the authorization identifier can identify a group of centrifugal pump assemblies 1 b, 1 c, 1 d, 1 e, 1 f. In this case, it is more general than a serial number and can encompass an entire serial number bank. Thus, the HMI module 20 is not only authorized to access one unique centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f, but also to access a defined group, for example a defined pump series, so that the HMI module 20 cannot be used for other pump series.

[0116] In a variant embodiment, it can be provided that the pump electronics system 4 and the HMI module 20 are set up to transmit the identifier of the first centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f from the pump electronics system 4 to the HMI module 20 in the state of mutual connection and to store it there as authorization identifier. Thus, the pairing of the HMI module 20 with the centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f is achieved. This ensures that only this single HMI module 20 is authorized to configure the centrifugal pump assembly.

[0117] Furthermore, as already mentioned, the added value of the HMI module 20 is that it does not have to be used for configuring or running the set centrifugal pump assembly 1 b, 1 c, 1 d, 1 e, 1 f, but can also be used to read the current operating values and / or measured values of the operating parameters of the current operating setting from the pump electronics system 4 and to display them on the display screen 22, since neither the HMI module 20 nor the pump electronics system 4 have to be set up exclusively for this purpose. Rather, the same steps are carried out in data technology and process technology as when making the operating setting, since only the point in time at which the HMI module 20 is plugged into the pump electronics system 4 is a different point in time, namely the point in time at which the user wants to know the operating parameter values and / or measured values of the current operating setting.

[0118] It is noted that the above descriptions are only for the purpose of example explanation and do not limit the scope of protection of the present application. The features of the present application stated as "capable", "for example", "preferably", "optionally", "desirably", "advantageously", "if necessary" or "suitable" should be considered purely optional and likewise do not limit the scope of protection determined solely by the claims. As long as the elements, components, process steps, values or information mentioned in the above description have known, obvious or foreseeable equivalents, these equivalents are included in the present application. The present application likewise includes all modifications, changes or variants of the embodiments, involving the replacement, addition, modification or omission of elements, components, process steps, values or information, as long as the basic idea of the present application remains unchanged, whether the modification, change or variant makes an embodiment better or worse.

[0119] Although the above description of the present utility model enumerates a number of tangible, intangible or specific process features related to one or more specific embodiments, these features can also be applied separately from the specific embodiments, in general, as long as they do not require the presence of further features. Conversely, these enumerated features related to one or more specific embodiments can be combined with each other and with further disclosed or non-disclosed features of the embodiments shown or not shown, at least as long as these features are not mutually exclusive or do not lead to technical incompatibilities.

[0120] List of reference signs

[0121] 1a to 1g centrifugal pump assembly;

[0122] 2 pump unit;

[0123] 3 electric motor;

[0124] 4 pump electronics;

[0125] 5 first housing;

[0126] 5a upper housing part;

[0127] 5b lower housing part;

[0128] 6a to 6f HMI of the centrifugal pump assembly;

[0129] 7 display of the HMI of the centrifugal pump assembly;

[0130] 8 operating button of the HMI of the centrifugal pump assembly;

[0131] 9 operating key of the HMI of the centrifugal pump assembly;

[0132] 10a, 10b, 10c display element of the HMI of the centrifugal pump assembly;

[0133] 11 power supply connection plug;

[0134] 12 electrical interface, socket;

[0135] 13 LED segment display of the HMI of the centrifugal pump assembly;

[0136] 14 opening to the socket;

[0137] 15 receiving hole for fastening legs;

[0138] 16 threaded hole for bolting;

[0139] 18 receiving area for the HMI module;

[0140] 22 HMI module;

[0141] 23 second housing;

[0142] 21a upper housing part;

[0143] 21b lower housing part;

[0144] 24 display screen;

[0145] 22a window;

[0146] 23a operating element, right side key;

[0147] 23b operating element, left side key;

[0148] 24 electronic system;

[0149] 25 base;

[0150] 26 electrical interface, plug;

[0151] 27 seal;

[0152] 28 bolt through hole;

[0153] 29 fastening leg;

[0154] 30 assembly consisting of a centrifugal pump assembly and an HMI module;

[0155] 31 protective cover;

[0156] 40 assembly consisting of two centrifugal pump assemblies and an HMI module.

Claims

1. Assembly (30, 40) comprising at least one first centrifugal pump assembly (1b...1e) and an HMI, the first centrifugal pump assembly (1b...1e) consisting of an electric motor (3), a centrifugal pump (2) drivable by the electric motor, and a pump electronics system (4) for controlling and / or regulating the electric motor (3) in accordance with normal operation, and the HMI having a display screen (22) and at least one operating element (23a, 23b) for operating settings for normal operation, the pump electronics system (4) being arranged in a first housing (5), having a first electrical interface (12) and having no or only limited ability to change operating settings itself, characterized in that: The HMI is a module (20) which has its own, completely closed second housing (21) and which has a second electrical interface (26) in order to be temporarily directly fitted onto the first housing (5) for the purpose of operating settings, such that in the fitted state the HMI module (20) is electrically connected to the pump electronics system (4), wherein the HMI module (20) can be removed from the first housing (5) and the first centrifugal pump assembly (1b...1e) is set up to be permanently operated without the HMI module (20).

2. The assembly (40) of claim 1, characterized in that: There is at least one second centrifugal pump assembly (1f) which consists of an electric motor (3), a centrifugal pump (2) which can be driven by the electric motor, and a pump electronics system (4) for controlling and / or regulating the electric motor (3) according to normal operation, which is arranged in the first housing (5), has a first electrical interface (12) and does not have its own or only a limited ability to change the operating settings of the second centrifugal pump assembly (1f), wherein for the purpose of operating settings of the second centrifugal pump assembly the HMI module (20) can alternatively be fitted onto the first housing (5) of the second centrifugal pump assembly (1f), such that in the fitted state the HMI module (20) is electrically connected to the pump electronics system (4) of the second centrifugal pump assembly (1f), wherein the HMI module (20) can also be removed from the first housing (5) of the second centrifugal pump assembly (1f) and the second centrifugal pump assembly (1f) is set up to be permanently operated without the HMI module (20).

3. The assembly (30, 40) of claim 2, characterized in that: The first centrifugal pump assemblies (1b...1e) belong to a first pump series and the second centrifugal pump assembly (1f) belongs to a second pump series.

4. The assembly (30, 40) according to claim 2 or 3, characterized in that: The first centrifugal pump assemblies (1b...1e) differ from the second centrifugal pump assembly (1f) at least in one of the following features: - the structural form of the first housing (5), - the structural size of the first housing (5), - the electrical power rating of the electric motor (3), - the functional scope of the pump electronics system (4), and / or - the design structure of the pump electronics system (4).

5. The assembly (30, 40) according to any one of claims 1 to 3, characterized in that: The first electrical interface (12) of the pump electronics system (4) is a socket and the second electrical interface (26) of the HMI module (20) is a plug which protrudes from the second housing (21) and in the state in which the HMI module (20) is connected to the pump electronics system (4) the socket and the plug are plugged into each other.

6. The assembly (30, 40) according to any one of claims 1 to 3, characterized in that: The HMI module (20) can be removed from and / or plugged onto the first housing (5) during continuous operation.

7. The assembly (30, 40) according to any one of claims 1 to 3, characterized in that: The operating settings which can be carried out on the pump electronics system (4) are only the selection of one of two or three operating modes and / or the setting of the rotational speed or the head of the first centrifugal pump assembly (1b...1e).

8. The assembly (30, 40) according to any one of claims 1 to 3, characterized in that: The second housing (21) of the HMI module (20) has a smaller structural space than the first housing (5) of the pump electronics system (4).

9. The assembly (30, 40) according to any one of claims 1 to 3, characterized in that: The second housing (21) of the HMI module (20) has a size of less than 8 cm.

10. The assembly (30, 40) according to any one of claims 1 to 3, characterized in that: The HMI module (21) has a non-volatile memory for storing data sets defining complete or partial operating settings of the first centrifugal pump assembly (1b...1e) and is arranged to enable the pump electronics system (4) to access the memory so that the pump electronics system (4) can transfer data sets into this memory or, conversely, can read data sets and set data sets from the memory.

11. The assembly (30, 40) according to any one of claims 1 to 3, characterized in that: The HMI module (20) has a non-volatile memory in which at least one authorization identifier is stored and in the pump electronics system (4) of the first centrifugal pump assembly (1b...1e) the identifier of the first centrifugal pump assembly (1b...1e) is stored and the HMI module (20) and the pump electronics system (4) are arranged to compare the identifier with the at least one authorization identifier after the HMI module (20) is connected to the pump electronics system (4) and to permit a change and / or access to the operating settings only if the identifier of the first centrifugal pump assembly (1b...1e) corresponds to the authorization identifier or can be derived from the authorization identifier at least.

12. The assembly (30, 40) of claim 11, characterized by: The authorization identifier identifies a group of centrifugal pump assemblies.

13. The assembly (30, 40) of claim 11, characterized by: The pump electronics system (4) and the HMI module (20) are arranged to transfer the identifier of the first centrifugal pump assembly (1b...1e) from the pump electronics system (4) to the HMI module (20) as an authorization identifier in the state of being connected to each other.

14. The assembly (30, 40) according to any one of claims 1 to 3, characterized in that: The operating settings are predetermined by the HMI module (20) changing at least one operating parameter directly in the operating software of the pump electronics system (4).

15. The assembly (30, 40) according to any one of claims 1 to 3, characterized in that: At least the first centrifugal pump assembly (1b...1e) has no HMI of its own or at most a basic HMI without a display.

16. The assembly (30, 40) of claim 9, characterized by: The second housing (21) of the HMI module (20) has a size of less than 5 cm. The HMI module (20) has a non-volatile memory for storing data sets defining complete or partial operating settings of the first centrifugal pump assembly (1b...1e) and is arranged to enable the pump electronics system (4) to access the memory so that the pump electronics system (4) can transfer data sets into this memory or, conversely, can read data sets and set data sets from the memory. The HMI module (20) has a non-volatile memory in which at least one authorization identifier is stored and in the pump electronics system (4) of the first centrifugal pump assembly (1b...1e) the identifier of the first centrifugal pump assembly (1b...1e) is stored and the HMI module (20) and the pump electronics system (4) are arranged to compare the identifier with the at least one authorization identifier after the HMI module (20) is connected to the pump electronics system (4) and to permit a change and / or access to the operating settings only if the identifier of the first centrifugal pump assembly (1b...1e) corresponds to the authorization identifier or can be derived from the authorization identifier at least. The authorization identifier identifies a group of centrifugal pump assemblies. The pump electronics system (4) and the HMI module (20) are arranged to transfer the identifier of the first centrifugal pump assembly (1b...1e) from the pump electronics system (4) to the HMI module (20) as an authorization identifier in the state of being connected to each other. The operating settings are predetermined by the HMI module (20) changing at least one operating parameter directly in the operating software of the pump electronics system (4). At least the first centrifugal pump assembly (1b...1e) has no HMI of its own or at most a basic HMI without a display. The second housing (21) of the HMI module (20) has a size of less than 5 cm.

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