EP4204689A1 - Steueranordnung - Google Patents
SteueranordnungInfo
- Publication number
- EP4204689A1 EP4204689A1 EP21772684.3A EP21772684A EP4204689A1 EP 4204689 A1 EP4204689 A1 EP 4204689A1 EP 21772684 A EP21772684 A EP 21772684A EP 4204689 A1 EP4204689 A1 EP 4204689A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- control arrangement
- housing cover
- housing part
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0686—Mechanical details of the pump control unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
Definitions
- the invention relates to a control arrangement for a centrifugal pump, in particular a circulating pump, with a central unit which is arranged in a housing which has a housing cover.
- the inventors also relate to an associated set and a method for configuring a control arrangement of a centrifugal pump.
- the circulating pump can be designed in the form of a centrifugal pump. Centrifugal pumps have a volute casing in which a bladed impeller rotates at high speed. It is driven by an electric motor via a pump shaft. The stationary stator of the electric motor and the rotating rotor are tightly separated by a tubular inner housing. The can can be made of non-magnetizable chromium-nickel steel. The encapsulated rotor runs in the pumped liquid. The circulating magnetic field in the stator winding induces an opposing magnetic field in the rotor winding.
- DE 29 20 313 C2 describes such a centrifugal pump as a circulating pump in heating systems.
- the speed of the circulation pump is controlled depending on the temperature, which is determined by an outside temperature sensor.
- the speed control can be either differential pressure control or proportional pressure control to be executed.
- the differential pressure control the speed and the power are automatically adjusted to the demand for circulated water. To do this, the pressure difference between the suction and pressure side is determined and the engine speed and thus the output is controlled in such a way that the differential pressure remains largely constant.
- the differential pressure is system-specific and is caused by the friction of the circulated water flow on the pipe walls and by changes in direction at each bend.
- proportional pressure control the target value of the differential pressure is changed depending on the volume flow. This rule takes into account that the system requires a different amount of hot circulating water depending on the requirement in order to provide the desired heat output in the connection stations.
- the speed of the pump is a decisive criterion with regard to energy saving.
- the power consumption of a pump and thus its energy consumption depends on the operating point, which represents the intersection between the control curve and the system curve. At this operating point, the pump delivers a certain flow rate with a certain delivery head.
- the pump operating point can be varied by adjusting the motor speed.
- the engine speed is set by a control unit. This consists of electrical and electronic components that are connected in such a way that they can automatically carry out complex control processes in the application of circulating pumps.
- control arrangements are based on microprocessors or PLCs. In pumps, they can perform the complex switching and control processes in the required manner, so that noise emissions can also be reduced, as described in DE 10 2017 203 960 A1. Control units are the basis for demand-oriented and, at the same time, the most economical operation possible. A control arrangement for the energy-saving control of a circulating pump is described, for example, in EP 1 342 957 A1. The switching times can be adjusted as required on the one hand and to the system requirements on the other.
- the controls of circulating pumps For integration into higher-level systems, it is necessary for the controls of circulating pumps to be able to communicate with sensors, actuators and other controls.
- the energy savings of circulating pumps can be further optimized if a building management system records the energy requirement as a whole and controls the energy supply individually. To do this, it is necessary for the controls of circulating pumps to be able to communicate with sensors, actuators and other controls.
- This ability to communicate can be implemented, for example, via interfaces to wired or wireless networks, in which case the interfaces can consist in particular of fieldbus modules or connections for sensors or actuators.
- fault messages can also be maintained remotely and predictive maintenance can be planned.
- the ability to communicate is made possible by adding an additional module to the housing of the central unit. To do this, sufficient space must be kept free and permanently available within the housing in order to be able to connect such a module.
- the cable for communication has to be brought in via the cable bushing and clamped in a time-consuming manner within the limited installation space.
- the cable bushings must be sealed and the housing cover must be closed tightly according to the requirements.
- the housing In order to be able to bring all common additional modules into the housing, the housing must have considerable additional space and a large number of cable bushings.
- the functionality of the communication interface cannot be signaled in the central unit via optical functional elements without additional costs. All these boundary conditions lead to an expensive basic design of housings for controls of circulating pumps.
- the object of the invention is to provide a control arrangement and a method for configuring a control arrangement of a circulating pump that allows the configuration to be carried out in a user-friendly manner.
- the device should take up little space in the housing.
- the method should allow the control devices to communicate flexibly with very different communication participants. Included the configuration of the control arrangement should be able to be implemented as cost-effectively as possible. The costs in the central unit should be kept to a minimum.
- a configuration module is integrated in the housing cover of the control arrangement.
- This additional module is used to configure the control arrangement.
- a fieldbus module for example, can be integrated in the housing cover, which enables communication with sensors, actuators and higher-level controls or regulations.
- a pump with the basic design of a control arrangement can preferably be produced in this way without having to reserve space within the housing for additional modules.
- the interior enlargement that may be required for additional modules is thus shifted to the third housing part. In the case of a third housing part with an additional module, the enclosed installation space is therefore larger than in the case of a third housing part without an additional module.
- the housing advantageously comprises a first housing part and a second housing part, the first housing part being partially closed by the second housing part and the housing cover closing the area of the first housing part that is not closed by the second housing part.
- the area of the first housing part that is not closed by the second housing part corresponds to a connection space of the central unit.
- the housing cover thus closes off the connection space of the central unit.
- the connection space is the installation space that is used to lay the control and power cables.
- the connection terminals are arranged in the connection area.
- the terminal compartment is designed in such a way that no components carrying dangerous voltages can be touched, even when the housing cover is open.
- the housing cover acts as a cover for the terminal compartment.
- the cover meets the required IP protection class.
- the connection terminals are
- the configuration of the control arrangement is automatically initialized by the method according to the invention, in that the housing cover with an integrated additional module is inserted into the housing. It has proven to be particularly advantageous that when the housing cover is snapped into place, a permanent signal connection is generated, which configures the control unit of the pump for communication, for example via bus systems.
- the second housing part is designed in such a way that an end customer cannot easily separate it from the first housing part and, in contrast, the housing cover can be replaced, for example, without special tools, the end customer can easily adapt the functionality of the pump possible.
- the pump to be delivered initially with a housing cover, which is only used to close the terminal compartment, and for the end user to retrofit a housing cover with an integrated module at a later point in time.
- the housing cover of the control arrangement with an integrated additional module is used to configure the pump control.
- a housing cover with the module required for this can advantageously be used.
- the required configuration of the control is matched to that used for it module performed automatically.
- An adaptation of the use of a circulating pump in the basic version or a subsequent adaptation to a new communication standard can therefore be carried out at any time during the product life cycle of a circulating pump.
- the device according to the invention creates a positive connection to the housing of the control arrangement.
- the positive connection can be designed as a tongue and groove connection. This design guarantees a permanent closure of the housing cover with the housing while at the same time providing a stable signal connection between the additional module and the control device.
- the connecting elements for the signal flow are preferably arranged in such a way that when the housing cover is pushed into the tongue and groove rail, the signal transmission connection snaps into place again and can be released.
- the connection of the housing cover to the housing could also be implemented as a dovetail connection.
- the housing cover of the control arrangement has a modular structure and can consist of several parts.
- the design of the housing cover can thus be adapted to different production and assembly requirements.
- the signal connection of the integrated additional module to the control unit of the circulating pump is preferably established at the same time.
- the manual wiring of an additional module to be used is no longer necessary with this variant.
- the configuration of the control using the additional module is therefore particularly easy to install and can be carried out in a time-efficient manner.
- the control arrangement in the housing of the same, of a circulating pump has at least one electronic assembly.
- This serves as a printed circuit board for electrical and electronic components, which enables the tasks of various speed controls and time-controlled switching pulses.
- the additional module integrated into the housing cover is also designed as an electronic assembly.
- the electronic assembly can preferably be a power assembly or a control assembly.
- the dimensions of the housing cover for closing the housing are standardized. This results in the same plug-in dimensions for the housing cover for all conceivable additional modules.
- the required space for the various conceivable additional modules is achieved through the different depths of the housing cover.
- the housing for the control arrangement can be designed to be particularly flat and space-saving, since the space required for an additional module is provided in the housing cover.
- the necessary connecting elements for the communication of the additional module such as ready-made connectors and/or cable bushings, are arranged in the housing cover.
- the design of the housing cover is fully coordinated with the integrated additional module and contains at least the necessary connection options.
- connection options can be completely dispensed with or at least reduced to a few connection options.
- this allows the costs for the basic design of the control arrangement of the circulating pump to be significantly reduced and, at the same time, the installation space for the control unit accommodated in the housing to be minimized.
- the housing cover with an integrated additional module has the optical display elements suitable for the integrated additional module for displaying the functional status.
- the display elements are in the form of LEDs.
- the functional status can be viewed from the outside.
- no display elements for every conceivable additional module have to be arranged on a housing of a control arrangement of the basic design.
- the housing can be closed with seals between the housing and the housing cover.
- the existing IP degree of protection of the housing of the control arrangement of the circulating pump can also be retained when using a housing cover with an integrated additional module.
- the connecting elements for the additional module integrated in the housing cover are preferably designed with the required IP protection class.
- the object set at the beginning is also achieved by a set comprising a control arrangement for a centrifugal pump, in particular a circulating pump, with a central unit arranged in a housing, with a first housing part and a second housing part of the housing partially closing the first housing part, a housing cover, which closes the area of the housing part that is not closed by the housing part, and a further housing cover, which closes the area of the housing part that is not closed by the housing part and comprises an integrated module for configuring the control arrangement.
- a set allows in particular a comparatively individual adjustment of the functionality.
- An adaptation of the use of a circulating pump in the basic version or a subsequent adaptation to a new communication standard can therefore be carried out at any time during the product life cycle of a circulating pump.
- Figure 1 is a plan view of the control assembly housing attached to the circulating pump.
- the sectional plane of FIG. 2 is marked in FIG.
- FIG. 2 shows a section of a control arrangement of a circulating pump.
- FIG. 1 shows a circulating pump with a housing 1 of a control unit arranged thereon.
- the circulating pump shown is a centrifugal pump which is installed in a pipeline (not shown) with a rotating shaft, an impeller and a stationary pump housing.
- An electric motor which is arranged in a housing for the electric motor, denoted by 2 in FIG. 2, drives the pump shaft on which the impeller is seated.
- the fluid entering the impeller axially through a suction socket and a suction neck is deflected by the impeller blades into a radial movement, as a result of which the fluid is accelerated while the fluid pressure increases at the same time. After exiting the impeller, the fluid is collected in the pump's volute casing.
- the control arrangement of the circulating pump shown in FIGS. 1 and 2 is accommodated in a housing 1 of the control arrangement.
- the housing 1 of the embodiment shown is designed in several parts, in particular in two parts, and comprises a first housing part 1a and a second housing part 1b, which thus form a type of housing body.
- the housing 1 of the control arrangement is arranged on the housing 2 of the electric motor.
- the central unit 4 which consists of a power assembly and a control assembly in the embodiment. This contains the electronic components for the speed controls and the shift control tasks.
- the first housing part 1a of the housing 1 is attached directly to the housing 2 of the electric motor.
- the first housing part 1a is partially closed by the second housing part 1b on the side opposite the electric motor.
- the central unit 4 is attached to one of the housing parts 1a or 1b.
- An exchangeable housing cover 5 closes the area of the housing part 1a that is not closed by the housing part 1b.
- the housing part 1b includes an operating unit 12 and at least one display device 13.
- the display device 13 preferably includes LED and/or LCD elements.
- the housing cover 5 for the housing 1 of the control arrangement contains an integrated module 6.
- this additional module 6 is a fieldbus module.
- Connectors and/or cable bushings 7 for the bus communication and display elements 3 for displaying the communication status are integrated on the housing cover 5 .
- the display elements are LEDs.
- Further cable bushings 8 are attached to the housing 1, in particular to the first housing part 1a and/or to the second housing part 1b.
- the housing 1 of the control arrangement with the housing cover 5 inserted is sealed with a seal 9 .
- the housing cover 5 closes off the area that is not closed by the housing part 1 b , in particular a connection space 10 of the central unit 4 .
- Connection space 10 is understood to be the installation space that is used for laying the control and power lines.
- the connection terminals 11 are arranged in the connection space 10 .
- the connection space 10 is designed in such a way that even when the housing cover 5 is open, no components, for example the connection terminals 11, which carry dangerous voltages, can be touched.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020005287 | 2020-08-28 | ||
| PCT/EP2021/073589 WO2022043425A1 (de) | 2020-08-28 | 2021-08-26 | Steueranordnung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4204689A1 true EP4204689A1 (de) | 2023-07-05 |
| EP4204689B1 EP4204689B1 (de) | 2025-08-13 |
| EP4204689C0 EP4204689C0 (de) | 2025-08-13 |
Family
ID=80221854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21772684.3A Active EP4204689B1 (de) | 2020-08-28 | 2021-08-26 | Steueranordnung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4204689B1 (de) |
| CN (1) | CN116113766A (de) |
| DE (1) | DE102021122056A1 (de) |
| WO (1) | WO2022043425A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021001715A1 (de) | 2021-04-01 | 2022-10-06 | KSB SE & Co. KGaA | Kreiselpumpe mit Elektronikgehäuse und wenigstens zwei Platinen |
| BE1032672B1 (de) * | 2024-11-22 | 2026-01-12 | Wilo Se | Bohrlochpumpe, Tauchmotorpumpe oder Tauchmotor-Rührwerk |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2920313C2 (de) | 1979-05-19 | 1983-02-03 | Grundfos Pumpenfabrik GmbH, 2362 Wahlstedt | Temperaturabhängig gesteuerte Umwälzpumpe für Heizungsanlagen |
| DE59914882D1 (de) * | 1999-06-22 | 2008-12-04 | Grundfos As | Pumpenaggregat |
| DE10208772A1 (de) | 2002-02-28 | 2003-10-02 | Henke Sass Wolf Gmbh | Steuergerät und Verfahren zur Steuerung einer Umwälzpumpe |
| ATE505651T1 (de) * | 2007-01-18 | 2011-04-15 | Grundfos Management As | Pumpenaggregat |
| DE102017203960A1 (de) | 2017-03-10 | 2018-09-13 | KSB SE & Co. KGaA | Verfahren zum Betrieb einer Umwälzpumpe sowie Umwälzpumpe zur Verfahrensausführung |
| EP3404267A1 (de) * | 2017-05-19 | 2018-11-21 | Grundfos Holding A/S | Pumpenanordnung |
-
2021
- 2021-08-26 CN CN202180051652.6A patent/CN116113766A/zh active Pending
- 2021-08-26 EP EP21772684.3A patent/EP4204689B1/de active Active
- 2021-08-26 DE DE102021122056.4A patent/DE102021122056A1/de active Pending
- 2021-08-26 WO PCT/EP2021/073589 patent/WO2022043425A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022043425A1 (de) | 2022-03-03 |
| EP4204689B1 (de) | 2025-08-13 |
| DE102021122056A1 (de) | 2022-03-03 |
| EP4204689C0 (de) | 2025-08-13 |
| CN116113766A (zh) | 2023-05-12 |
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