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JP6474333B2 |
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JP2019023473A |
To provide a simple pump management method capable of grasping damage or deterioration of a portion and performing trend management without selecting temporal maintenance in a check work schedule by securing the same condition having rep...
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JP6469520B2 |
An optimal target pressure control curve corresponding to an operation situation is automatically determined in an estimated constant end pressure control. A pump apparatus includes a pump to transport liquid, and a motor to drive the pu...
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JP6469384B2 |
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JP2019019789A |
To provide a pump device which is inexpensive while maintaining operation convenience.A pump device has an impeller rotationally driven by an electric motor, has a casing which is located so as to cover an outer circumference of the impe...
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JP2019015204A |
To provide a submersible pump that can prevent damage to a control unit and shortening of its life.A submersible pump device comprises: an impeller 10; a casing 13 in which the impeller 10 is housed; a motor 20 for rotating the impeller ...
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JP2018197529A |
To provide a water supply device which can store information related to an operation of the water supply device together with a further correct time, and to reduce the number of components of the device in the water supply device.A water...
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JP6427364B2 |
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JP2018178856A |
To suppress heating of a casing during self-priming operation of a pump device.A pump device includes: an impeller (16) rotationally driven by a motor (2); a casing (17) positioned so as to cover an outer periphery of the impeller (16), ...
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JP2018173204A |
To provide a refrigerator and a refrigerator control method, which more surely suppress foaming in an oil tank.A refrigerator comprises: a compressor 3; a condenser 5; an evaporator 9; an oil tank 17 storing lubrication oil; an oil heate...
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JP6420700B2 |
This multistage pump having a simple structure can keep cavitation from occurring in a fluid flowing back via a balance pipe. This multistage pump 200 is provided with: a rotating shaft 1; multiple impellers 2 mounted on the rotating sha...
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JP6420701B2 |
A pump with a simple structure capable of suppressing contact between a balance disk and a balance seat is realized. A multistage pump 200 includes: a rotating shaft 1; impellers 2 mounted on the rotating shaft 1; a balance mechanism 70 ...
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JP6404593B2 |
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JP6404367B2 |
A method for controlling a pump arrangement upon clogging. The arrangement includes a pump and a control unit. The pump includes a motor, and the control unit drives the motor. The motor during operation is associated with an operational...
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JP6400943B2 |
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JP6393795B1 |
To provide a method for adjusting a water supply unit and a water supply unit capable of easily and appropriately adjusting a pressure adjusting valve. The method of adjusting a water supply unit according to one embodiment of the presen...
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JP6389532B2 |
A pump station arrangement and a method for turning off a pump configured for pumping liquid via a conduit. The pump, before being turned off, being driven at an operational frequency (FN) by a control unit. The method is characterized b...
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JP2018135761A |
To provide a pump system that is build while taking into consideration of an event that a pump room is flooded, and to provide a drainage pumping station.A pump system includes: a vertical shaft pump for guiding water from a suction wate...
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JP6379483B2 |
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JP6378765B2 |
An arrangement for compensating the axial thrust of a fluid-flow machine is provided. A load-relieving element is non-rotatably connected to a shaft. A flow-restrict gap is formed by the load-relieving element and a counter-element secur...
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JP2018127997A |
To provide a water supply device capable of more accurately clocking present time.A water supply device for supplying water to a building includes a control section having a clocking section for clocking present time, and a communication...
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JP6374998B2 |
To improve the reliability in decision whether a self-priming pump is performing a self-priming operation or not in a simple configuration.A driving device (inverter 30) of a self-priming pump of the invention comprises a current detecto...
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JP6373334B2 |
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JP2018119310A |
To provide sewage drainage pump equipment that can maintain a state of a sewage submerged motor pump well in drainage equipment.The sewage drainage pump equipment draining sewage in a water tank comprises a plurality of sewage submerged ...
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JP6357717B2 |
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JP6354562B2 |
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JP2018107970A |
To provide an extinction pump unit capable of cancelling a pump lock state by inhibiting a load from being applied to a motor.An extinction pump unit 1 comprises: a motor 21 for performing rotary drive using rated current; a rotation sha...
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JP2018091213A |
To provide a submerged motor-driven pump system in which when one of a water level detecting part and a submerged motor-driven pump main body is replaced with another one, the water level detecting part and the submerged motor-driven pum...
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JP6331185B2 |
The present invention relates to a fluid level sensor-attached motor pump for a washer fluid, in which a fluid level sensor for detecting the remaining amount of a washer fluid stored in a washer fluid reservoir and outputting a detectio...
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JP6334300B2 |
To detect cavitation characteristic of a hydraulic machine and diminishing or eliminating the strength of the cavitation.A direct acting type hydraulic machine in which a single shaft is shared between an electric motor or an electric ge...
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JP2018076781A |
To provide a control device capable of preventing intermittence of fire fighting, a water supply device having the control device, and fire-fighting equipment having the water supply device.Fire-fighting equipment 10 includes: a water su...
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JP6326174B2 |
The invention relates to a method for determining the delivery rate of a pump. In this context, a value of the delivery level and a value of the power of the pump are determined. A probability density function is calculated for the deliv...
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JP6321568B2 |
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JP6316561B2 |
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JP2018059277A |
To improve energy efficiency and reduce vibration of an apparatus in a pump gate provided with a plurality of pumps on the same gate.A pump gate (100) comprises: one gate (10) provided so as to open and close a water channel (1) in the v...
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JP2018053817A |
To provide a pump unit having good workability, a control device, and a control method of a pump.A pump unit according to one embodiment of the present invention comprises a pump, a first control unit connected to the pump to control ope...
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JP2018055150A |
To provide a notification device, a monitoring system and a notification method capable of appropriately coping with abnormality when the abnormality occurs in a pump facility.A notification device 20 is installed in a manhole pump facil...
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JP2018053888A |
To propose a feed water supply system capable of indicating an integrated operation count or integrated operation time for each pump according to the request of users and restricting the users from hypersensitively reacting in response t...
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JP6303043B1 |
To provide a submersible pump and a control method of a submersible pump capable of determining a drought operation and a pumping operation even if there is a difference in a motor type and a power source frequency. A submersible pump 1 ...
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JP6295307B1 |
To provide a water supply unit capable of detecting a desired stop flow rate with little loss of pressure loss and pumping performance even if it is small in size. A water supply unit 1 is provided with a connecting pipe 12 integrally pr...
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JP2018035705A |
To provide water supply equipment, especially, an operation control of a household well pump, in which the reduction amount of a pressure, i.e., the fluctuation in the flow rate, on the discharge side in an operation in the case where mu...
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JP6290119B2 |
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JP6268141B2 |
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JP6268299B2 |
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JP2018009494A |
To reduce the breakage risk due to long period earthquake vibration with a stopping vertical shaft pump.A pump system 1 for restricting the resonance of a vertical shaft pump p that comprises supply means for supplying water WT into a ha...
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JP6261960B2 |
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JP6258757B2 |
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JP2017227194A |
To provide a drainage system, a pump facility control system and a pump facility control method which do not put a large burden on a pump.A drainage system comprises: a motor (1) which has an output shaft (11); a pump (3) which has a mai...
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JP2017227131A |
To provide a pump device capable of removing foreign substances blocked in a clearance between a slide bearing and a rotary shaft.A pump device is equipped with a canned motor pump which is equipped with an impeller 1 for transporting li...
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JP6255444B2 |
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