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Patent Searching and Data


Matches 551 - 600 out of 3,477

Document Document Title
JP2011202509
To provide a high specific-speed pump in which an axial power in a small water volume area during a cutout operation or the like is reduced despite a simple structure.The axial-flow pump P includes a spindle 2 rotatably disposed in a cas...  
JP2011202524
To always obtain target capacity without concentrating a load at a specific water suction pump.A control part 35 controls the total discharge capacity of a plurality of water suction pumps P1-P8 to the target capacity by repeatingly perf...  
JP2011185190
To provide an efficient control device integrated type motor pump.The control device integrated type motor pump includes a pump 1, a motor 2 driving the pump 1, a control device 3 controlling the motor 2, and a discharge side pressure me...  
JP2011176946
To provide a motor device that reduces load on a switching element, and also reduces power consumption, and to provide a pump with the motor device.The motor device 1 includes, a rotor 2, a stator 3 that drives the rotor 2, the switching...  
JP2011163298
To provide a water feeding pump control device and a water feeding pump control method, which reduce leakage of tap water stored in water supply equipment when leakage occurs by a disaster in the water supply equipment and fire extinguis...  
JP2011157949
To prevent both of delay in start of drainage and hunting operation, in a drainage pump installed to a suction water tank in which water flowing over a mount flows from the upstream.Pumps 4A-4E are installed to the suction water tank 5 i...  
JP2011157894
To provide a method and device for predicting a cavitation erosion quantity in a fluid machine, enabling easy prediction of the cavitation erosion quantity.The method includes mounting a vibration acceleration sensor on the fluid machine...  
JP2011137406
To provide a status diagnosis system and method for a cargo pump, which diagnose the status of the secular change in the cargo pump without opening a cargo handling tank while monitoring the status of the cargo pump, and also provide an ...  
JP2011127460
To provide a water supply device which prevents the occurrence of water hammer when a pump is started for the first time after the water supply device is stopped for a long period.This water supply device 1 includes: the pump P; a motor ...  
JP2011111982
To provide reduction of the installation cost of a water level detecting means, reduction of installation man-hours, enhancement of operability, standardization and commonization on a plurality of water level control and functions.A wate...  
JP2011111983
To provide a water level control system of a water supply pump system, improving problems by parameterizing respective threshold values of operation and stop of water level control and function according to the water level of a water sou...  
JP2011112277
To perform change control of a set differential pressure and a set water supply pressure without causing problems even in a system having both an inverter pump and a constant-speed pump.A lower limit set value change function of inverter...  
JP2011094563
To provide a highly reliable pump facility and an operating method, by preventing turbulence of a flow near an intake port caused by back-flow in a suction part, smoothly sucking air therein to shorten the starting time, and thereby impr...  
JP2011080858
To provide a full water level detector provided with a countermeasure against rusty water that can be equipped to a pump installed outdoors.In a body housing 10, an air passage and an electrode bar chamber 12 including two or more electr...  
JP2011066088
To provide a function for assuring circulation of an etchant by effectively removing the gas, generated from the etchant, from within an injection line and an injection pump, while using a pump of blade water pump type which does not cau...  
JP2011064113
To provide an automatic pressure tank type pump that replenishes air into a pressure tank when an inching occurs.An automatic pressure tank type pump 1 includes a pump head 6, a pressure tank 10 that accumulates water pressurized by the ...  
JP2011056401
To reduce power consumption by controlling speed of rotation of a pump while maintaining the water level of the tank of water treatment equipment in a fixed range.The water treatment equipment includes at least two tanks for storing wate...  
JP2011038513
To provide a fluid control system disposed at a predetermined distance from a fluid transfer apparatus, in relation generally to control of fluid transport systems, and more particularly, to methods and apparatus for channeling water to ...  
JP2011017346
To provide a pump device performing estimated terminal pressure constant control without causing insufficient water supply or insufficient water supply pressure.This pump device includes: a pump 310; a pressure detection means 323 detect...  
JP2010276006
To solve problems of conventional water supply secondary pump number control in which since the number control is performed by a system using a two-position regulator by load flow measurement or by use of a number control controller, att...  
JP2010275688
To provide a boost water supply system for high-rise building operating a plurality of variable speed pumps arranged in parallel and driven by an electric motor controlled by variable voltage-variable frequency power supply and controlli...  
JP2010261338
To provide a boost water supply unit preventing seizing of a pump, used for a direct connection type boost water supply device at its second stage or thereafter.The boost water supply unit includes: a pressurizing pump; a check valve; a ...  
JP2010261339
To provide a boost water supply device generating no periodic fluctuation of pressure.A pressure tank is connected to piping on the intake side of a pressurizing pump. A flow rate adjusting part is provided between the pressure tank and ...  
JP2010261386
To provide a pump device capable of easily controlling the discharge amount of each of a left heart blood pump and a right heart blood pump as a blood pump for an artificial heart.An upper rotor 5a above a stator 4 and a lower rotor 5b b...  
JP2010254281
To save cost, space, and energy and labor for operation and maintenance in the entire engine cooling device of a ship.Pumps 21 including a pump of two-suction port type and a cooler-related devices 51G, 51J are disposed on the lower/uppe...  
JP2010242730
To provide a pump device and a method accurately managing a vibration tendency of a pump.This invention relates to the pump device for pumping up liquid in a suction water tank. This pump device has a pump having a rotary shaft 6, an imp...  
JP2010242511
To provide a general purpose pump device simply preventing an extreme drop of pumpage to the occurrence of cavitation.If characteristics of motor rotation speed Nm and pump operation current value Im which are peculiar for occurrence of ...  
JP2010242521
To provide a pump which prevents the complication of an internal structure and manufacturing process and the enlargement of a body size, and which can determine pump service life.The pump 1 consists of a rotor 3 equipped with a magnet 31...  
JP2010236498
To provide a control device for a manhole pump device that prevents the occurrence of foreign matter tangling in an impeller and blocking inside a pump casing by accumulating without increasing a starting frequency, and a control method ...  
JP2010229859
To provide a water supply device preventing pressure on a secondary side of a water supply pump from becoming excessive.The water supply device 1 includes a plurality of pump units respectively connected to a branch pipe branching off a ...  
JP2010216288
To provide a parallel-off control method and system for a parallel pump, in which N(N≥2) units of variable speed pumps driven by a variable voltage and a variable frequency power source are constituted so as to execute parallel operati...  
JP2010209698
To provide an energy saving control device for a cooling facility pump capable of quickly controlling a flow rate and the pressure of fluid to a required value.The energy saving control device includes the pump, a main pipe connected to ...  
JP2010201325
To provide a method of controlling a pure water supply system, by which even if total consumption of pure water varies at a use point, a load of a water supply pump is reduced, with energy consumption curtailed, and to provide a pure wat...  
JP2010192317
To provide a miniaturizable liquid level detector having high reliability, preventing contact malfunction.A float switch 10 includes a float case 28, a magnet 32 housed in the float case 28 and functioning as a magnetic part operable in ...  
JP2010174841
To provide a water feed device that is highly efficient while maintaining reliability by operating in consideration of a limit load current value of a pump.In the water feed device including the pump rotated and driven by a motor, a vari...  
JP2010174536
To provide a stable and highly-reliable booster water supply system saving energy, by preventing a decrease in water supply pressure, hunting, etc. from occurring in a zone or local area of a partial story, and preventing an excessive op...  
JP2010174538
To provide a booster water supply system which makes performance of a booster pump of each booster water supply section determined for each of low-story, medium-story and high-story zones.This booster water supply system includes the boo...  
JP2010136863
To provide a compact, centrifugal type pump apparatus smoothly activating an impeller to rotate.The centrifugal type blood pump apparatus is equipped with the impeller 10 provided in a blood chamber 7, a permanent magnet 15 provided on o...  
JP2010131303
To provide a compact centrifugal pump smoothly starting rotation of an impeller.The centrifugal blood pump has the impeller 10 arranged in a blood chamber 7, a permanent magnet 15 arranged in one side face of the impeller 10, a permanent...  
JP2010119859
To provide a method for estimating a flow rate of a blood pump which can effectively restrain accuracy of an estimated result of the flow rate from being deteriorated due to an individual difference of blood pump characteristics.The meth...  
JP2010121890
To secure the NPSH (Net Positive Suction Head) of a pump during water level control of a drain tank connected to a steam system of a power generation plant.This tank water level control system includes: a tank 1 for storing condensation ...  
JP2010115571
To safely and surely perform drain treatment by properly controlling the timing of stopping a drain pump.The water treatment device includes: a rainwater storage tank 2 storing rainwater; a drain pump 11 provided in the rainwater storage...  
JP2010084697
To provide a control device and method for a direct feed water supplying system of large rate of flow structured so that a parallel operation is conducted with variable speed pumps, capable of controlling the rate of flow of each pump so...  
JP2010084696
To provide a pump controller for a direct feed water supplying system of a large rate of flow controlled by a presumptive terminate pressure constant control capable of preventing a pump from cavitation even in the large rate-of-flow wat...  
JP2010065703
To provide a turbomachinery driving device using a dual inverter system and its control method for dispensing with a main controller for controlling both inverters and an external communication device for transmitting signals showing mut...  
JP2010059793
To provide a pump operation device capable of determining abnormality or normality of a pump by detecting discharge side pressure of the pump.The pump operation device has a single pump or a plurality of pumps connected in parallel, inle...  
JP2010053821
To provide a pump system capable of restraining power consumption at a low level.The pump system used for transport of river water and agricultural water comprises a transformer 7 for reducing voltage of power supplied from a power syste...  
JP2010048202
To certainly detect drought by solving the following existing problems: when muddy water or the like is used in a circuit detecting the drought, a motor current value is varied by a cause different from the drought, a conductor and an en...  
JP2010048020
To provide a monitoring control device for appropriately controlling drainage while attaining power saving without troubling an operator.The monitoring control device comprises an inflow amount predicting means 211 determining a predicte...  
JP2010031807
To make compatible both mechanical balance in air and hydraulic balance in fluid as an impeller 6 for a pump receiving force asymmetric with respect to a rotation center axis by fluid force in a radial inward direction acting on a prescr...  

Matches 551 - 600 out of 3,477