EP4239199A1 - Pumpenbetriebsteuerung - Google Patents

Pumpenbetriebsteuerung Download PDF

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Publication number
EP4239199A1
EP4239199A1 EP22159859.2A EP22159859A EP4239199A1 EP 4239199 A1 EP4239199 A1 EP 4239199A1 EP 22159859 A EP22159859 A EP 22159859A EP 4239199 A1 EP4239199 A1 EP 4239199A1
Authority
EP
European Patent Office
Prior art keywords
pump
operational
pressure
controller
operational mode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22159859.2A
Other languages
English (en)
French (fr)
Inventor
Florian SOOR
Tobias DEMMELMAIER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Husqvarna AB
Original Assignee
Husqvarna AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Husqvarna AB filed Critical Husqvarna AB
Priority to EP22159859.2A priority Critical patent/EP4239199A1/de
Priority to CN202310179340.4A priority patent/CN116696734A/zh
Publication of EP4239199A1 publication Critical patent/EP4239199A1/de
Pending legal-status Critical Current

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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
    • F04D13/16—Pumping installations or systems with storage reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • 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
    • F04D15/0088—Testing machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/301—Pressure

Definitions

  • the present disclosure relates to a pump. More specifically, the present disclosure relates to the pump that includes a controller for controlling an operation of the pump.
  • a pressure tank unit may include a pump, a pressure tank, and a pressure switch.
  • a pressure tank may often be utilized to provide water under pressure to an irrigation system, plumbing system, and the like.
  • the pressure tank may supplement the pump and may also allow the pump to operate intermittently.
  • the pump may be operated intermittently because a continuously operating pump may have a shorter operational lifetime.
  • the pressure switch may enable the pump to operate intermittently while also ensuring that the system (say irrigation system) maintains pressure.
  • the pressure switch is a device that opens and closes an electrical contact based on a liquid pressure acting against an input of the pressure switch.
  • the pressure switch is configured to close the electrical contact, and therefore activate the pump, when the pressure acting against the input falls to a predetermined cut-in pressure.
  • the pressure switch is configured to open the electrical contact (i.e. turn off the pump) when the pressure acting against the input rises to a predetermined cut-out pressure.
  • the '836 reference provides a well management system.
  • the well management system provides an Internet-enabled monitoring, configuration, and control of a well system that includes a pump and a pressure tank.
  • a controller is operatively coupled to the pump.
  • the controller controls the pump based on pressure readings from a pressure sensor to maintain a configured pressure range within the system.
  • the controller may communicate with a management system via a communications network.
  • the management system is further in communication with one or more client devices. Via the management system, the client devices may receive information from the controller and send commands to the controller.
  • a pressure tank unit which may provide constant liquid pressure throughout an operation of any known domestic or industrial applications such as spraying, sprinkling, and the like.
  • the pump includes a storage tank adapted to store a pressurized liquid and a pumping unit configured to supply the pressurized liquid to the storage tank.
  • the pumping unit includes a drive motor.
  • the pump further includes at least one operational parameter sensor configured to measure one or more operational parameters of the pump.
  • the pump includes a controller communicably coupled with the pumping unit, and the at least one operational parameter sensor. The controller is configured to receive the one or more operational parameters of the pump from the at least one operational parameter sensor.
  • the controller is further configured to determine an operational condition of the pump based on the received one or more operational parameters and activate at least one of a first operational mode and a second operational mode of the pump based on the determined operational condition.
  • the first operational mode corresponds to controlling an operation of the pumping unit based on the one or more operational parameters.
  • the pump is characterized in that the second operational mode corresponds to controlling the operation of the pumping unit irrespective of the one or more operational parameters.
  • the present disclosure provides a pump that is advantageously operable in two different operational modes.
  • the two different operational modes provide a benefit of operating the pumping unit as per the requirements of an operational condition.
  • the two different operational modes further allow a pump to selectively account for one or more operational parameters of the pump calculated by at least one operational parameter sensor.
  • the controller is further configured to receive a user input indicative of selection of the at least one of the first operational mode and the second operational mode. The controller then activates the at least one of the first operational mode and the second operational mode based on the received user input.
  • the decision to operate the pump in the first operational mode or the second operational mode may be made and communicated to the controller by the user. The user may make the decision to select a particular operational mode of the pump based on the operational conditions, storage tank size, pump specifications among other factors.
  • the user input is received through a user interface configured with the controller.
  • the user interface may obtain the user input by virtue of one or more input devices and may further communicate the user input with the controller.
  • the user interface may also include a set-up such as a display screen or a blinking light that may acknowledge the user input.
  • the user interface is one or more of a toggle switch, a push button, a rotary button.
  • the user interface may be commonly known and understood in the art. Further, the user interface may be cost-effective and easy to operate.
  • the user interface is configured with a mobile device.
  • the user interface may be wirelessly coupled with a mobile device (say a smartphone).
  • a mobile device say a smartphone.
  • the pump may be easily and effectively operable from a remote location.
  • At least one of the first operational mode and the second operational mode is activated automatically.
  • the controller implements a process or an algorithm to automatically activate the first operational mode or the second operational mode without any human intervention.
  • the automatic activation is governed by the operational parameter of the pump.
  • the algorithm implemented by the controller makes use of detected operational parameters such as the pressure in the storage tank, liquid flow rate in the pump to make decision about the automatic activation of the first operational mode or the second operational mode.
  • the operational condition is an irrigation event.
  • Different operational conditions may demand different one or more operational parameters such as, but not limited to, liquid pressure, liquid flow rate etc., in the pump.
  • the pump may then be selectively operated in the first operational mode or the second operational mode to meet the demand for the one or more operational parameters.
  • the at least one operational sensor includes a pressure sensor.
  • Pressure is one of the most important operational parameters for the operation of the pump.
  • the pressure sensor communicates the pressure reading of the pump with the controller.
  • the controller then controls the operation of the pump based on the pressure reading for smooth and efficient operation of the pump under different operational conditions.
  • the operational parameter is a pressure of the storage tank.
  • the storage tank may function to supplement the pump and may improve the durability of the pump. Further, the pump may be required to operate, or cease operating based on the pressure of the storage tank.
  • FIG. 1 illustrates a schematic block diagram of a pump 100.
  • the pump 100 includes a storage tank 110 adapted to store a pressurized liquid.
  • the pump 100 further includes a pumping unit 120 configured to supply the pressurized liquid to the storage tank 110 and/or a distribution system 130 (e.g., a plumbing system of a structure).
  • the pump includes a drive motor (not shown).
  • the storage tank 110 may be a pressure vessel having an internal diaphragm that separates an interior volume into an air chamber from a liquid chamber.
  • the air chamber may be provided with a pre-charge of air pressure so as to provide liquid under pressure to the distribution system 130 even when the pumping unit 120 is not operating.
  • the pump 100 further includes at least one operational parameter sensor 140 configured to measure one or more operational parameters of the pump 100.
  • the one or more operational parameters of the pump 100 may be a liquid pressure, liquid flow rate, liquid level, and the like.
  • the at least one operational parameter sensor 140 may measure one or more operational parameters of the pump 100 for an efficient operation of the pump 100. Further, the at least one operational parameter sensor 140 may measure one or more operational parameters of the pump 100 for improving the durability of various elements or parts associated with the pump 100.
  • the pump 100 includes a controller 150 communicably coupled with the pumping unit 120, the at least one operational parameter sensor 140, a remote server 160 and a user interface 170.
  • the controller 150 is configured to receive the one or more operational parameters of the pump 100 from the at least one operational parameter sensor 140.
  • the controller 150 may receive the liquid level within the storage tank 110 from a liquid level sensor (not shown) or the liquid temperature from a temperature sensor (not shown).
  • the controller 150 receives the pressure of the storage tank 110 from a pressure sensor 142.
  • the controller 150 is configured to determine an operational condition of the pump 100 based on the received one or more operational parameters and activate at least one of a first operational mode " P1 " and a second operational mode “P2" of the pump 100 based on the determined operational condition as shown in FIGS. 2 and 3 .
  • the first operational mode " P1 " corresponds to controlling an operation of the pumping unit 120 based on the one or more operational parameters (as shown in FIG. 2 ).
  • the second operational mode "P2" corresponds to controlling the operation of the pumping unit 120 irrespective of the one or more operational parameters (as shown in FIG. 3 ).
  • the operational condition may be an operational condition requiring very small amount of water such as a toilet washing or a hand washing event that may generally require a less quantity of the liquid (say water).
  • the controller 150 may activate the first operational mode " P1 " .
  • an operational configuration may include pressure setpoints and the operational parameter includes pressure reading from the pressure sensor 142.
  • the pressure sensor 142 is coupled to liquid flow lines between the pumping unit 120 and the storage tank 110 or the distribution system 130.
  • the pressure sensor 142 provides the pressure reading in the liquid flow lines and communicates the pressure reading with the controller 150.
  • the controller 150 activates the pumping unit 120 when the pressure reading falls below a cut-in pressure and deactivates the pumping unit 120 when the pressure reading is at or above a cut-out pressure.
  • the operational condition is an irrigation event such as a sprinkling event or a spraying event that may generally require large quantity of the liquid (say water).
  • the pressure may be required to be continuously maintained within the pump 100.
  • the controller 150 may activate the second operational mode "P 2 ".
  • the controller 150 completely disregards or disobeys the pressure reading from the pressure sensor 142.
  • the pumping unit 120 then operates continuously throughout the period of the irrigation event or the operational condition.
  • the pressure sensor 142 may be integrated with the controller 150.
  • the pressure sensor 142 may be at least partially integrated with a circuit board of the controller 150 and/or enclosed within a common housing.
  • the common housing that includes the controller 150 and/or the pressure sensor 142 may be installed on or attached to the storage tank 110.
  • FIG. 4 illustrates a schematic block diagram of an exemplary, nonlimiting embodiment for the controller 150.
  • the controller 150 includes one or more processor(s) 200 configured to executed computer-executable instructions 204 such as instructions composing a control and communication process for the pump 100.
  • Such computer-executable instructions 204 are stored on one or more computer-readable media including non-transitory, computer-readable storage media such as memory 202.
  • memory 202 may include non-volatile storage to persistently store the instructions 204, settings 206 (e.g.
  • Memory 202 may also include volatile storage that stores the instructions 204, other data (working data or variables), or portions thereof during execution by the processor 200.
  • the controller 150 further includes a communication interface 210 to couple the controller 150, via the Internet or other communications network, to the remote server 160.
  • the communication interface 210 may be a wired or wireless interface such as, but not limited to, a Wi-Fi interface, an Ethernet interface, a Bluetooth interface, a fiber optic interface, a cellular radio interface, a satellite interface, etc.
  • the communications settings, thus established, may be stored in memory 202.
  • a component interface 212 is also provided to couple the controller 150 to various components of the pump 100.
  • the component interface 212 may connect the controller 150 to the at least one operational parameter sensor 140 such as the pressure sensor 142, the pumping unit 120.
  • the controller 150 may activate the pumping unit 120 (i.e. close an electrical switch), deactivate the pumping unit 120 (i.e. open the electrical switch), acquire electrical properties (i.e., current, voltage, resistance, etc.) of the pumping unit 120, acquire readings from the at least one operational parameter sensor 140, or the like.
  • the component interface 212 may include a plurality of electrical connections on the circuit board or internal bus of the controller 150 that may be further coupled to the processor 200, memory 202, etc.
  • the component interface 212 may implement various wired or wireless interfaces such as, but not limited to, a USB interface, a serial interface, the Wi-Fi interface, a short-range RF interface (Bluetooth), an infrared interface, a near-field communication (NFC) interface, etc.
  • a USB interface such as, but not limited to, a USB interface, a serial interface, the Wi-Fi interface, a short-range RF interface (Bluetooth), an infrared interface, a near-field communication (NFC) interface, etc.
  • a USB interface such as, but not limited to, a USB interface, a serial interface, the Wi-Fi interface, a short-range RF interface (Bluetooth), an infrared interface, a near-field communication (NFC) interface, etc.
  • Bluetooth Bluetooth
  • NFC near-field communication
  • the controller 150 determines the operational condition such as the irrigation event, the hand washing event, or any other event based on the received one or more operational parameters received from the at least one operational parameter sensor 140.
  • the one or more operational parameters may then be compared with the information or data stored in the memory 208 and/or the remote server 160.
  • the memory 208 and/or the remote server 160 may already include a database for the relationship between the operational conditions and the operational parameters.
  • the controller may check with the memory 208 and/or the remote server 160 to understand whether the received one or more operational parameters correspond to the irrigation event or some other event to accordingly activate the at least one of the first operational mode "P 1 " and the second operational mode “P 2 " of the pump 100.
  • the controller 150 automatically decides whether to operate the pump 100 in the first operational mode "P 1 " or the second operational mode "P 2 " without any intervention by a user.
  • FIG. 5 is a flowchart illustrating a process 300 for automatic operation of the pump 100 by the controller 150, according to another embodiment of the present disclosure.
  • the process 300 is embodied as an algorithm implemented by the controller 150 (as shown in FIG. 4 ) including the processor 200. Further, the process 300 or the algorithm may be stored in the memory 202.
  • the process 300 begins.
  • the process 300 then moves to step 304 to turn ON the drive motor of the pumping unit 120 in order to start the operation the pumping unit 120 of the pump 100.
  • step 304 the drive motor is turned ON in step 304
  • the process 300 moves to step 306 and the liquid flow rate is detected in the pump 100. If the liquid flow rate is not detected at step 306, the process 300 moves to step 310 to detect if the pressure in the storage tank 110 is greater than or equal to a predetermined cut-out pressure.
  • the cut-out pressure is the maximum pressure value after which the drive motor is turned OFF.
  • step 312 If the pressure in the storage tank 110 turns out to be greater than or equal to the predetermined cut-out pressure in step 310, then the process 300 moves to step 312 and the drive motor is turned OFF. The process 300 then moves to step 314 to detect if the pressure in the storage tank 110 is less than or equal to a predetermined cut-in pressure after turning OFF the drive motor at step 312.,
  • the cut-in pressure is the minimum pressure value below which the drive motor is turned ON.
  • step 332 If the pressure in the storage tank 110 does not turn out to be less than or equal to the predetermined cut-in pressure, then the process 300 moves to step 332 to detect if the liquid flow rate in the pump 100 is greater than a pre-determined threshold value. If the liquid flow rate turns out to be greater than the predetermined threshold value, then the process 300 moves to step 304 to start the drive motor else the process 300 moves back to step 314. Further, if the pressure in the storage tank 110 as detected in the step 314 turns out to be less than or equal to the predetermined cut-in pressure, then the process 300 moves to step 304 and the drive motor starts.
  • the process 300 moves to step 316.
  • the pressure in the storage tank 110 is again detected or measured after a pre-determined time period.
  • the pre-determined time period is 1 minute. In other embodiments, the pre-determined time period may be any other suitable time period as per application requirements.
  • the process 300 moves to step 318 to verify if there is an error and then further moves to step 320 to confirm the error. However, if the detected pressure reaches the predetermined cut-out pressure after the pre-determined time period, then the process 300 moves to step 322 to verify if the value of the detected pressure is less than or equal to a pre-determined pressure value.
  • the predetermined pressure value is 0.5 bar. In other embodiments, the pre-determined pressure value may be any other suitable pressure value as per application requirements.
  • step 322 If the detected pressure in step 322 is less than or equal to the predetermined pressure value then the process 300 moves to step 324 to verify if there is an error and then further moves to step 320 to confirm the error. If the detected pressure in step 322 is greater than the pre-determined pressure value, then the process 300 moves to step 306.
  • step 306 the liquid flow rate is again detected. If at step 306, the liquid flow rate is detected, then the process 300 moves to step 308.
  • the pump system checks if the second operational mode (that is the so called PowerBoost mode) is selected, then the process 300 moves to step 326 else the process 300 moves to step 310.
  • two conditions are tested. First condition is if the pressure in the storage tank 110 is greater than or equal to the cut-off pressure of the second operational mode and second condition is if the pressure in the storage tank 110 was detected before the pre-determined time period.
  • step 306 If both the conditions at step 326 are not met simultaneously, then the process 300 moves to step 306 else the process 300 moves to step 328.
  • step 328 the drive motor is turned OFF. Thus any flow in the pump results from the water in the pressure tank.
  • the process 300 then moves to step 330 to detect if the liquid flow rate in the pump 100 is greater than the pre-determined threshold value. If the liquid flow rate in the pump 100 turns out to be greater than the predetermined threshold value, then the process 300 moves to step 304 else the process 300 moves to step 314.
  • the process 300 is repeated at regular intervals to detect the operational state of the pump 100 and thereby automatically and selectively operates the pump 100 in the at least one of the first operational mode "P 1 " and the second operational mode "P 2 ".
  • the controller 150 determines the characteristic curve range in which the pumping unit 120 works in coordination with the pressure of the storage tank 110. In the event that the pressure of the storage tank 110 is below the cut-out pressure, a power off of the pumping unit 120 is prevented and the pumping unit 120 remains in continuous operation. If cut-out pressure is reached, the pumping unit 120 switches off. The liquid flow rate is then calculated by the pressure change in the storage tank 110 over the time. This flow rate is used for further decision making. If this flow rate falls below the pre-determined threshold value, the pumping unit 120 operates in the first operational mode "P 1 " and remains in the power off state until the cut-in pressure of the pumping unit 120 is reached. However, if the algorithm running in the controller 150 detects the liquid flow rate above the pre-determined threshold value, the pumping unit 120 remains in continuous operation and operates in the second operational mode "P 2 ".
  • the user may opt to disregard or disobey the judgement or the decision of the controller 150 to activate the at least one of the first operational mode "P 1 " and the second operational mode “P 2 " of the pump 100.
  • the user may do so by switching OFF a switch (not shown) provided with the controller 150 or with the help of a voice command to the controller 150, or any other means to provide user input without limiting the present disclosure in any manner.
  • the controller 150 may be configured to receive a user input indicative of selection of the at least one of the first operational mode “P 1 " and the second operational mode “P 2 ". The controller 150 may then activate the at least one of the first operational mode “P 1 " and the second operational mode “P 2 " based on the received user input. In this embodiment, the decision to operate the pump 100 in the first operational mode “P 1 " or the second operational mode “P 2 " may be made and communicated to the controller 150 by the user. The user may make the decision to select the at least one of the first operational mode "P 1 " and the second operational mode “P 2 " of the pump 100 based on the operational conditions, storage tank size, pump specifications among other factors.
  • the user may bias the decision of selection of the operational mode between the at least one of the first operational mode "P 1 " and the second operational mode “P 2 " of the pump 100 based on the operational parameters such as liquid pressure in the storage tank 120 being displayed on a display screen (not shown) provided with the controller 150.
  • the user input is received through the user interface 170 configured with the controller 150.
  • the user interface 170 may obtain the user input by virtue of one or more input devices and may further communicate the user input with the controller 150.
  • the user interface 170 may also include a set-up such as the display screen (which is different from the display screen provided with the controller 150) or a blinking light that may acknowledge the user input.
  • the user interface 170 may be one or more of a toggle switch, a push button, a rotary button.
  • the user interface 170 such as the toggle switch, the push button and the rotary button may be commonly known and understood in the art. Further, they may be cost-effective and easy to operate.
  • the user interface 170 may be configured with a mobile device (say a smartphone).
  • the user interface 170 may be wirelessly coupled with a mobile device using any known technology such as the Bluetooth, Wi-Fi, among others.
  • the pumping unit 120 may be easily and effectively operable from a remote location.
  • the present disclosure provides the pump 100 that is advantageously operable in two different operational modes "P 1 , P 2 ".
  • the two different operational modes “P 1 , P 2 " provide a benefit of operating the pump 100 as per the requirements of the operational condition such as the irrigation event, hand washing event among others.
  • the two different operational modes “P 1 , P 2 " further allow the pumping unit 120 to selectively obey one or more operational parameters of the pump 100 calculated by at least one operational parameter sensor 140.
EP22159859.2A 2022-03-03 2022-03-03 Pumpenbetriebsteuerung Pending EP4239199A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22159859.2A EP4239199A1 (de) 2022-03-03 2022-03-03 Pumpenbetriebsteuerung
CN202310179340.4A CN116696734A (zh) 2022-03-03 2023-02-24 泵

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22159859.2A EP4239199A1 (de) 2022-03-03 2022-03-03 Pumpenbetriebsteuerung

Publications (1)

Publication Number Publication Date
EP4239199A1 true EP4239199A1 (de) 2023-09-06

Family

ID=80625061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22159859.2A Pending EP4239199A1 (de) 2022-03-03 2022-03-03 Pumpenbetriebsteuerung

Country Status (2)

Country Link
EP (1) EP4239199A1 (de)
CN (1) CN116696734A (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973877A (en) * 1973-11-30 1976-08-10 Hitachi, Ltd. Automatic pumping device
WO2006015693A1 (de) * 2004-08-02 2006-02-16 Gardena Manufacturing Gmbh Steuervorrichtung für eine flüssigkeitspumpenanordnung
WO2020023836A1 (en) * 2018-07-26 2020-01-30 Amtrol Licensing Inc. Well management system
JP2021049235A (ja) * 2019-09-26 2021-04-01 株式会社荏原製作所 給水消火システム、消火方法及びプログラム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973877A (en) * 1973-11-30 1976-08-10 Hitachi, Ltd. Automatic pumping device
WO2006015693A1 (de) * 2004-08-02 2006-02-16 Gardena Manufacturing Gmbh Steuervorrichtung für eine flüssigkeitspumpenanordnung
WO2020023836A1 (en) * 2018-07-26 2020-01-30 Amtrol Licensing Inc. Well management system
JP2021049235A (ja) * 2019-09-26 2021-04-01 株式会社荏原製作所 給水消火システム、消火方法及びプログラム

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CN116696734A (zh) 2023-09-05

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