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JP2022003230A |
To disclose one example of a water supply device capable of suppressing the occurrence of cavitation.When it is determined that a detected suction pressure is less than a first predetermined pressure PS1 (S2:YES), a control unit activate...
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JP2022003232A |
To disclose an example of a water supply device having a function for operating two pumps in a variable speed manner at the same frequency, and calculating a target pressure in a state of estimated terminal pressure constant control.Cont...
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JP2022003226A |
To disclose an example of a water supply device which can determine abnormality of an electric pump by detecting vibration of the electric pump.Detection data detected just before execution of a small water amount stop function, and init...
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JP2022003227A |
To disclose an example of a water supply device which can quickly cope with sudden increase of a water supply amount and in which pressure pulsation hardly occurs.A control portion CTL determines not a fixed value determined in advance o...
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JP2022003231A |
To disclose an example of a control module capable of being applied to a water supply device including an electric pump.A control module 10 has a constitution in which a motor control board 12 and a sensor board 13B are integrated throug...
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JP2022003234A |
To disclose an example of a water supply device which can cope with occurrence of abnormality in a power source.A water supply device includes a monitoring unit 30 for switching between the case where an electric current is supplied from...
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JP2022003233A |
To disclose an example of a water supply device capable of alleviating laboriousness of setting work.A water supply device 1 includes a function of communicating with each of control units CTL, counting the number of the control units CT...
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JP2022003235A |
To disclose one example of a water supply device that has an abnormality determination function, and can restrain an excessive increase in a load on control units.A control unit stopping the control of an electric pump out of control uni...
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JP2022003228A |
To disclose an example of a water supply device capable of discriminating trip of an earth leakage breaker.A control portion CTL determines occurrence of communication error when water flow is detected by a flow rate sensor Fs in a case ...
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JP2022003239A |
To provide a water supply device ensuring an alternate operation even during a freezing prevention operation and saving more energy compared to a heater externally attached to a pump.A water supply device 10 includes: a plurality of pump...
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JP2022001746A |
To provide a feed water device which can suppress the lowering of followability, and can prevent the generation of a water hammer.A feed water device 1 comprises: a pump 21; a motor 22 for driving the pump 21; a drive unit 31 for variabl...
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JP2021195936A |
To provide a water supply device capable of detecting deterioration of a pumping performance.A water supply device 1 includes an inverter 51 that controls a motor 31, a pressure sensor 20 provided on a secondary side of a pump 32, a flow...
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JP2021195937A |
To provide a water supply device capable of raising a discharge pressure at stopping, and increasing time from starting to stopping of discharge pressure rise.A water supply device 1 includes an inverter 51 that controls rotations of a m...
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JP2021195938A |
To support the switching of settings.A communication device includes a receiving portion, a determining portion, and a transmitting portion. The receiving portion receives a broadcast signal from a water supply device. The determining po...
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JP6987289B1 |
To reduce an excessive operation time of a pump as compared with a case where a pump is newly started when the total load of the pump during operation reaches a value obtained by subtracting a certain value from the total rated load. At ...
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JP6985834B2 |
To provide a pump device that facilitates maintenance of a pressure tank.A pump device comprises a pump for transferring water, a pressure tank attached to a flow passage for the water, and a control unit for controlling the pump. The co...
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JP6986877B2 |
To provide a pump device capable of easily confirming an operational state or alarm, even in a case where it is installed under an environment of poor workability.A pump device 1 comprises: a unit cover 15 fixed to a unit vase 14, and co...
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JP6982505B2 |
To provide a highly convenient pump unit capable of avoiding the suspension of water supply to the utmost by suppressing ending in protective stop when starting a pump.The pump unit includes a control device including an input part for i...
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JP2021188604A |
To disclose one example of specific control for each water supply unit, in a water supply device that has a control unit for each of a plurality of water supply units.When a plurality of water supply units Ws operate in parallel, a colla...
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JP6976179B2 |
To provide a pump which can extend a run time of aerial operation or enables the aerial operation to be conducted continuously without stopping a drive part.A pump 10 includes: a pump casing 12 in which a rotary shaft 22 is disposed; a s...
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JP6977106B2 |
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JP2021532304A |
The well management system provides internet-enabled monitoring, configuration, and control for well systems with pumps (120) and pressure tanks (130). The controller (110) is operably connected to the pump. The control device controls t...
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JPWO2020136897A1 |
The fluid pumping system 1 estimates the deterioration level of the one pumping device 10 based on the information on the driving force of the plurality of pumping devices 10 for pumping the fluid and the driving force of any one of the ...
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JP6969467B2 |
To provide an electrical submersible pump capable of reliably driving a main body of the electrical submersible pump even in the case of fluid having low electric conductivity.An electrical submersible pump 100 comprises: an electrical s...
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JP2021179192A |
To provide a pump device capable of easily installing a vibration sensor for detecting abnormality of the pump device without reducing detection accuracy thereof, and an electric motor.A pump device 1 comprises: a pump 10; an electric mo...
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JP6967864B2 |
To provide a control system and a control method of a pump which can perform drainage with high reliability even when a pump head is high, and to provide a drainage system.A control system (20) of a pump (100) which performs operation ir...
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JP6966388B2 |
To restrict the fresh water useless consumption as lubrication liquid.A pump 10 comprises: a lubrication liquid flow passage 30 for supplying the lubrication liquid to bearings 24A and 24B through a protective pipe 31; an outside water i...
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JP6961905B1 |
To provide a pump system capable of reducing a load on a pump drive circuit for driving a pump. A pump system starts a pump 2 that pumps water stored in a water tank S1 and discharges it to a pipe PI2, and starts the pump 2 when the wate...
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JP2021173255A |
To provide a small-sized pump device with a high lift while improving suction performance.A pump device 100 comprises a plurality of pump units 1A, 1B, 1C connected continuously in series. Each pump unit 1 comprises: an impeller 14 in wh...
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JP2021169809A |
To provide a pump device that can reduce vibration and noise emitted from the pump device even when a pump device includes multiple motor pumps.A pump device 100 includes multiple pump units 1A, 1B, 1C sequentially connected to each othe...
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JP2021169797A |
To provide a technology relating to a fluid pump system that can improve durability of a fluid pump.A fluid pump system includes a fluid pump, a detection unit and a control unit. The fluid pump includes: a motor; a bearing for supportin...
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JP6951963B2 |
To provide a manhole pump system which is capable of effectively suppressing power consumption by operation controlling start/stop of a pump while effectively utilizing capacity of a pump facility.The present invention relates to a manho...
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JP6948198B2 |
According to the present invention, an impeller (5) is provided with: a main plate (35) that is fixed to a rotating shaft (1); a shroud (37) that has a liquid inlet (30) and that faces the main plate (35); and a plurality of blades (38) ...
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JP2021156211A |
To provide a pump that can replenish air while maintaining a pump discharge and a shutoff total pump head even when using water for a long time.A pump device includes an impeller rotatably driven by an electric motor, a casing positioned...
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JP2021156170A |
To provide a pump apparatus which saves labor in maintenance management and overhaul, can drain water in a wide range from a large amount of water to a small amount of water, can take measures to prevent reverse rotation at the time of f...
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JP6944249B2 |
To attain energy saving of a water supply device in a state where water supply to a water supply target is secured.A water supply device for supply water to a water supply target includes a pump configured to pressurize water to feed wat...
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JP6946216B2 |
To make operation frequencies of two pumps approximately equal to each other, in a pump system including two pumps.A pump (submerged pump 1) includes a water level sensor 10, and a controller 12 for starting a pump main body while switch...
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JP6938722B1 |
To accurately and easily set the number of pumps connected to a water supply device. A water supply device 1 includes at least one pump and a number calculation unit 151. The number calculation unit 151 calculates the number of pumps con...
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JP2021127746A |
To provide a pump device capable of performing auxiliary pressurization.A pump device 1 comprises: a pump unit 12 connected to a pipe 501 which is closed in a terminal or a middle part; a pressure detector 33 which detects a pressure at ...
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JP2021519883A |
The motor pump device is the output shaft (4) of the electric motor (4) surrounded by a swirl (2) and enclosed by a housing (5) that is closed by a cover (6) on the opposite side of the impeller (1). It has an impeller (1) attached to 3)...
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JP6918592B2 |
To ensure that a degree of falling water or a degree of possibility can be easily grasped by using a simple structure in a pump device.A pump device 10 comprises a pump 13 comprising an impeller 21 and a pump casing 20, a vacuum pump 30 ...
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JP2021105347A |
To provide a water supply device in which an accuracy of a target pressure constant control can be improved at low cost.A water supply device 1 includes: a motor 31; a pump 32 driven by the motor 31; an inverter 51 controlling a rotation...
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JP6904622B1 |
Between the fixed portion and the rotating portion, which is arranged inside the fixed portion and is non-contactly supported at the center of the fixed portion by the radial magnetic flux generated by the radial direction supporting mag...
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JP2021101113A |
To provide a method for controlling a rotation speed of a centrifugal pump operating in an open hydraulic circuit.A controller for pump control calculates a desired rotation speed of pump drive in consideration of desired and actual disc...
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JP6899643B2 |
To suppress unintended operation in a water supply device which can communicate with an external device.A water supply device for supplying water to a building includes a communication section which can communicate with an external devic...
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JP6899501B2 |
A method for conveying blood or priming liquid as a medium using a blood pump, measures gas in the medium in a feed line to the pump, in or on the pump, and the pump power is increased only for a short time as a function of the measured ...
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JP6899642B2 |
To provide a water supply device that can store information about operation of the water supply device together with an exact time, and reduce the number of device components in the water supply device.A water supply device is intended t...
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JP2021097835A |
To provide a pump system that allows a flow rate of delivered liquid to be easily grasped.A pump system comprises a first pump, a second pump different from the first pump, and a control unit for controlling the pump system. The first pu...
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JP2021097833A |
To easily attach a proper container to each of a plurality of pumps.A pump system 200 includes a plurality of syringe pumps 100 each having an indicator, and a control unit for controlling the pump system 200. A first pump group PG1 cont...
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JP2021092225A |
To provide water supply equipment and a control method enabling transmission of versatile display information to an external indicator.In a nonvolatile memory of water supply equipment, equipment information including at least one of the...
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