Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 551 - 600 out of 3,457

Document Document Title
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...  
JP2010022961
To provide a water treatment apparatus and method which enables the economical and efficient detoxification of hardly decomposable compounds such as organofluorine compounds.In the water treatment apparatus, organofluorine compounds in i...  
JP2010025042
To provide a pump flow rate estimating system and a pump flow rate estimating method, for estimating a flow rate of a variable speed pump driven by variable voltage and a variable frequency power source controlled by delivery pressure co...  
JP2010019222
To provide a pressure control method and a pressure control system of a pump which execute accurate estimated terminal pressure control when a plurality of variable-speed pumps driven by variable voltage and variable-frequency power supp...  
JP2010019220
To provide a pump device constructed to prevent the occurrence of reverse thrust therein while suppressing an increase of axial thrust on the suction side.A flow path length 20 of a clearance flow path which is formed between a side plat...  
JP2010019223
To provide a pump flow rate control method and a pump flow rate control system which automatically adjust flow rates of respective pumps and make shared flow rates of the pumps uniform when a plurality of variable-speed pumps driven by v...  
JP2010012338
To provide a fire extinguishing method using a fire extinguishing pump achieving sure and effective operation under disadvantageous conditions in a disaster in a high-rise building.This fire extinguishing method uses the fire extinguishi...  
JP2010014126
To provide a fire pump device capable of providing reliable and effective operation under a disadvantageous condition when a disaster occurs.This fire pump device has an electric pump 10 for forcibly feeding water, a plurality of water d...  
JP2010007552
To provide a fuel supply apparatus capable of precluding generation of a raspy beating sound.The fuel supply apparatus simultaneously drives a plurality of fuel pumps P1 and P2 having the same specification to pressure-feed fuel in a tan...  
JP2010007515
To provide an automatic operating device for an electric pump in which in the electric pump using a three-phase induction motor as a prime mover, current flowing in an opening/closing mechanism incorporated in an electric circuit for ope...  
JP2010001893
To efficiently and effectively supply a high pressure fluid for augmenting power of a gas turbine.A fluid supply skid with a pre-fill system for supplying fluid has one or more stages including a first valve and a second valve, each havi...  
JP2009299629
To appropriately generate micro bubbles while accurately grasping a change in the operating state of a pump such as clogging which occurs in a part of a flow path.A pump unit X is composed of a pump 2 which is operated at a prescribed ro...  
JP2009299670
To provide an automatic operation device for a motor pump making an opening/closing mechanism itself compact by making contact capacity small by reducing current flowing to the opening/closing mechanism built in an electric circuit for o...  
JP2009293578
To provide a variable displacement fluid pump which exerts as little resistance as possible to a flow of fluid.The variable displacement fluid pump has vanes of which effective heights are changed by moving a movable member. In the varia...  
JP2009288231
To solve a problem wherein there is a method of indirectly measuring a flow from total head curve as a pump intrinsic characteristic and actual head and pipe loss determined by a pump installation condition without using an electromagnet...  
JP2009264351
To provide a highly reliable operation control device of a pumping-draining facility, the pumping-draining facility and an operation method of the pumping-draining facility, capable of draining water by successively operating a pump arra...  
JP2009264190
To provide a submersible pump control panel and its control method capable of preventing idling with high accuracy even when submersible pumps are of a plurality of models or are installed in installation places of different situations.T...  
JP2009250033
To provide a water pump that can change a flow rate by performing torque transmission utilizing a magnetic force between a drive-side rotor body in a non-contact state and a driven-side rotor, which can reduce an air gap between the driv...  
JP2009243764
To provide a system and method for controlling a movable blade of a new circulating pump.The movable blade control system for the seawater circulating pump used in an electric power plant and connected to a condenser includes a movable b...  
JP2009228649
To avoid water supply stoppage by constructing a n-fold system autonomous distributed water supply control system driven by a variable speed drive means and providing back-up at a time of communication abnormality.In a system which const...  
JP2009228629
To provide a submerged pump device provided with a non-clog type impeller capable of appropriately coping with requested delivery quantity without preparing many impellers of different sizes and effectively utilizing an existing control ...  

Matches 551 - 600 out of 3,457