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Matches 601 - 650 out of 3,457

Document Document Title
JP2009215884
To provide a pump preventing vibration and noise caused by pump unstable operation, and stably supplying hot water by continuous pump operation.This pump 2 is provided with: a drive circuit provided in a motor and outputting a rotation m...  
JP2009215992
To provide a method for operation for a liquid pressurizing pump capable of further reducing wear of a seal ring.A control device 42 determines based on displacement measurement value of displacement detectors 43, 44 whether a gap betwee...  
JP2009209893
To provide a pump in which its blade is not damaged, a brushless motor is not demagnetized, and water inside the pump is prevented from freezing, thus preventing the pump from damaging.The pump 2 which circulates water 8 is equipped with...  
JP2009197701
To provide an operation monitor control device or the like which stores the instrument data in the optimum operating state in the beginning of installation and the quantized parameters in a non-erasable storage part, and monitors facilit...  
JP2009197689
To provide a water supply control device and its system capable of ensuring the consistent water amount and the consistent pressure when operating a plurality of pumps in a changing manner, and safely operating the pumps without any shut...  
JP2009191808
To provide transportable drain pump equipment enabled to be operated in a range to a low water level by preventing stoppage in a suction port of a drain pump by dusts, and to provide an operating method thereof.In this transportable drai...  
JP2009174409
To provide a pump device certainly started with low starting current.This pump device includes a plurality of pumps 1 arranged in a suction sump 20, and a control section 10 controlling operation of the plurality of pumps 1. Each of the ...  
JP2009150287
To provide a control device of a pump station and a pump station equipped with the control device that can prevent the water level of a sucked water tank from becoming significantly lowered to stably operate a pump.The control device of ...  
JP2009144658
To provide a pump facility capable of quickly starting a draining operation by a horizontal shaft pump by reducing the time required for starting the horizontal shaft pump and having enhanced reliability, safety, and economic efficiency....  
JP2009133226
To inspect a change of discharge resistance of a pump based on a general characteristic value used for operation control of the pump.A data acquisition section 11 acquires as an input characteristic value for calculation 2A a flow rate a...  
JP2009133253
To provide a pump operation control system capable equalizing operation time of each pump and reducing frequency of maintenance of each pump.When conducting operational controls of pumps P1 to P3 for supplying water from a water receivin...  
JP2009133290
To provide a reducing agent pump control device which can control impeller lock.The control device is provided with a pump case and an impeller. A pump chamber is formed in the pump case, and the impeller arranged in the pump chamber is ...  
JP2009133230
To calculate, based on a pump characteristic value indicating an arbitrary operation point, a shaft power and power consumption required when operating the pump at the operation point.A reference flow rate calculation section 16A calcula...  
JP2009133227
To inspect pump measuring equipment while keeping normal operation of a pump system without imposing a burden on work for inspection.There provided are a reference operation point specifying section 16A for specifying a reference operati...  
JP2009133229
To calculate a highly precise characteristic value of a pump without previously measuring operating characteristic data of the pump.There provided are a reference operation point specifying section 16A for calculating a reference flow ra...  
JP2009114967
To provide a pump operation control device for starting a pump 5 arranged at a water storage part (water storage tank 1) in which water is stored for discharging the water in the water storage part when the water level in the water stora...  
JP2009108841
To prevent cavitation by increasing circulation water quantity according to a predetermined temperature rise of water near a preheater.In this water pump control system, temperature of cooling water near the preheater 23 heating cooling ...  
JP2009103028
To provide a control device and control method of rain water pump, which does not cause a hunting in a pump control.The device and method controls: a plurality of sets of pumps 301a, 301b including variable speed pumps; an engine 302 for...  
JP2009085134
To provide an operation control device of a horizontal shaft pump preventing an accident due to pump operation while dropping in the water, being further economical, and having high reliability and safety; and an operation controlling me...  
JP2009074541
To provide a water supply system excellent in an installation property without the need of troublesome wiring work, and various kinds of control equipment such as a sensing circuit for inexpensively providing a control board for a water ...  
JP2009062927
To provide a variable speed water supply device capable of restraining a variation in water supply pressure, even when a large quantity of water is used in a short time.This variable speed water supply device has a pump 1A, a motor 2A fo...  
JP2009062144
To provide a transfer pump system which can efficiently transfer easily-damaged transfer objects such as fresh fish and small fish, can be used even on a fishing boat or a small ship by a simple device without using a complicated mechani...  
JP2009052403
To provide a control device of a pump device capable of appropriately controlling a motor of a pump in response to the opening/closing states of a valve.When a certain pressure is continued in a water supply side pressure at lower than a...  
JP2009052532
To provide a water supply device and a water supply system enabling telecommunication without increase of working time.The water supply device 1 comprises a pump device 10 connected with a branched pipe 5 branched from a water service ma...  
JP2009052524
To provide a water supply pipe direct connection pump device operating a pressurizing pump only when a water pressure of water supply is not greater than a reference pressure with a simple structure.When a water pressure from the water s...  
JP2009047125
To provide a water supply apparatus using a plurality of pumps driven by a plurality of variable speed drive means and using the variable speed pumps suitable for automatically creating parameters and an operational expression required f...  
JP2009047119
To more precisely determine an abnormality in a flowmeter of a water supply equipment in which water is supplied intermittently.The water supply equipment has a water-supply pump 5 provided on a water supply pipe 4 to supply water interm...  
JP2009041450
To provide an electric pump for cooling an internal combustion engine, etc. capable of sufficiently improving warming-up performance at cold start of the internal combustion engine.By the electric pump 11 enabling bidirectional suction a...  
JP2009041500
To provide a pump device capable of being attached without changing installation piping and of carrying out variable speed operation control such as constant pressure control by a pump single body.The pump device having a pump part 10 pr...  
JP2009024935
To provide a system for controlling a circulating pump so that a temperature difference between an intake and a water discharge port does not exceed a pollution prevention agreement value in a cooling system utilizing seawater as cooling...  
JP2009011767
To solve the problem that a recently noticeable turbo pump is smaller and lighter in weight than a conventional pulsatile pump mainly used in an artificial heart pump, however, has a demerit that a blood flow is unstable, especially ther...  
JP2009006158
To provide a fire pump apparatus which allows a sure and effective action under disadvantageous conditions in a disaster.The fire pump apparatus has a motorized pump 10 to convey water with pressure, a main pipe 52 attached to the discha...  
JP2009007964
To provide a centrifugal pump capable of relaxing a thrust load generated by negative pressure on a suction port side and applied toward a suction port side of a pump case from an impeller, of extending life, and of being efficiently dri...  
JP2009008035
To provide a variable speed water supply device having a plurality of motor pumps driven at a variable speed, and performing stable additional operation with reduced pressure fluctuation.The variable speed water supply device comprises: ...  
JP2009008091
To provide a fire pump device surely and effectively operating under unfavorable condition when an accident occurs.This fire pump device includes: an electric pump 10 pressurizing and feeding water; one or a plurality of water discharge ...  
JP2009007959
To provide a centrifugal pump capable of relaxing a thrust load applied toward a suction port side of a pump case by a simple structure without arranging a balancing hole nor a rear blade on an impeller, and of extending the life of the ...  
JP2009002303
To provide a water supply system which uses a plurality of pumps driven by a variable speed driving means, which can prevent an inverter trip, and which can perform smooth parallel operation of a plurality of pumps without causing any dr...  
JP2009002162
To provide a drainage pump device capable of securing a predetermined drainage flow rate while avoiding an overloaded state of the drainage pump and operating at the original drainage flow rate of the drainage pump in the case where fore...  
JP2008309023
To provide a cavitation detecting method for appropriately detecting cavitation.The cavitation detecting method detects cavitation occurring in target equipment with fluid. The method includes a step for acquiring vibration data of the t...  
JP2008280921
To obtain a DC pump inspection device easily inspecting performance of a DC pump in an incorporated state in a product while observing constraint concerning drive of the pump.The pump inspection device comprises a control section 1 for d...  
JP2008274761
To provide a pump control device capable of controlling fluctuation of water-distribution pressure in re-starting a pump stopped during the water-distribution pressure control by a plurality of parallel pumps.The pump control device 1 ha...  
JP2008255911
To solve a problem in which a pump device frequently repeats a start and a stop even if a customer does not use water when water slightly leaks from the pump device to a delivery side pipe.The pump device is provided with a pressure sens...  
JP2008248851
To eliminate risk of sudden change of flow rate and unstable flow rate control.A fuel pressurizing pump is formed by connecting four small capacity pumps in parallel. When a second small capacity pump, a third small capacity pump, and fo...  
JP2008223589
To provide a hot water supply device, in which circuit breakage caused by increase in water temperature in a pump for the hot water supply device in increase in water temperature and increase in the temperature of a motor winding is prev...  
JP2008208807
To provide pump equipment in which foreign substances in a pump casing can be easily removed with the pump equipment fixed.The pump equipment is equipped with a motorized pump 13 which conveys sewage water 12 inside a manhole 11. A water...  
JP2008202555
To shirk the danger of suspension of water supply and the burst of piping due to the generation of pressure imbalance, when a water supply amount is abruptly increased/decreased, in a water supply device equipped with a controlling funct...  
JP2008202556
To improve system reliability by constructing an n-multiplex system autonomous distributed control system in a water supply device using a plurality of pumps driven by a plurality of variable speed driving means.Inverter main body 1-2 on...  
JP2008202553
To prevent unnecessary lock releasing control when an electric water pump is locked.The control device for the electric water pump comprises a lock releasing controlling means, and a restarting controlling means. The lock releasing contr...  
JP2008190401
To provide a reliable pump which can control a flow rate with a simple structure at a reasonable cost.By referring to a current value-exhaust flow rate relationship (4,000 rpm) 64 stored in a judgment reference storage means 6, an exhaus...  
JP2008186266
To provide the operation controller for a drainage pumping station which can optimally control the drainage from a tributary river to a main stream river, by appropriately controlling the operation of a sluice gate and a drainage pump du...  

Matches 601 - 650 out of 3,457