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Patent Searching and Data


Matches 751 - 800 out of 3,477

Document Document Title
JP2006307859
To improve an impeller of pump so that a centrifugal pump can be used with a capacity bigger than that of optimal operation reference point, and without a risk damaging a shaft seal device or the like.The centrifugal pump, comprising a p...  
JP2006307682
To provide a pump device that measures a flow rate or pressure in an operational status of a pump without using a flowmeter or a manometer to utilize them for an operation control of the pump.The pump device comprises a pump 11, a variab...  
JP2006307727
To provide a vertical shaft pump, early starting pumping, and improving emergency response in rapid inflow of a large amount of water.In the vertical shaft pump 41, a suction port 6 is formed below an impeller 4, a delivery pipe 8 for de...  
JP3875372
To reduce the load of an operator, for example, by facilitating monitoring, preventing tripping on activation, automating starting operation, preventing damage when a reactor recirculation internal pump stops, and at the same time secure...  
JP2006299939
To provide a water supply device having reliable high empty operation prevention function without spending surplus cost.The water supply device includes a pump 10, an inverter 14 variably controlling a drive motor of the pump 10. Also, t...  
JP2006304488
To provide an induction motor suitable for driving a liquid hydrogen pump.A resistance is increased by reducing a cross section of a squirrel-cage rotor or using a material having a large resistance for the squirrel-cage rotor. Since a t...  
JP2006291938
To suppress the occurrence of vibration by eliminating the unbalance of a fluid force produced when an impeller is rotated in a fluid by a simple structure.Three projected parts 61 for supporting bolts are formed, at equal intervals, on ...  
JP2006291900
To prevent the occurrence of hunting in a preceding stand-by type vertical shaft pump.The preceding stand-by type vertical shaft pump 1 comprises a main air supply pipe 16 and an auxiliary air supply pipe 17. The main air supply pipe 16 ...  
JP3869625
To provide a pump device capable of reducing a thrust directional load of a rotor output shaft of a motor at suction time and self-priming process time. In this pump device having the motor 4 as a driving source and an impeller 1 being r...  
JP2006283739
To provide a pump installation automatically operating alternately two or more submerged pumps by an inexpensive and simple structure with the number of float switches minimized.The first submerged pump 1 has the first float switch 10 fo...  
JP2006283597
To stably prevent an electric pump device from being clogged with foreign matter without changing the pump displacement as much as possible.When the foreign matter is detected by a foreign matter detecting means, a pump controller 10 per...  
JP2006274819
To provide a submerged pump reduced in size to reduce an installation space and enabling the reduction of damages and erroneous operations.In this submerged pump, electrode parts 11 and 12 for level detection are fitted to a vertically e...  
JP2006266191
To provide a method for operating a vertical shaft pump preventing the suction of air from a suction port and the generation of an air sucking swirl and capable of lowering a pumping shut-off water level as compared with a conventional m...  
JP2006258033
To avoid the problem when being rotated (idly rotated) in a state without containing liquid at all in a pump chamber.A rotating speed of an electric motor is detected (Step A3), and when the detected rotating speed of the electric motor ...  
JP3857563
To supply cleaning fluid at sufficient delivery pressure and delivery rate using a small pump device to first and second jet nozzles disposed on the right and left sides of a vehicle corresponding to head lamps disposed on the right and ...  
JP2006250018
To provide an inexpensive, compact pump without requiring installation of an accumulator and to provide a liquid supply device provided with the pump.This pump has a pump part 1 incorporating an impeller 2 for absorbing and discharging l...  
JP2006250004
To provide a collective pump device capable of stably maintaining its overall operation by controlling the pumping and no-load running of each of pump devices according to an inflow amount to stabilize a water level in a water storage pi...  
JP2006250071
To provide a storage pump and a method of operating the storage pump capable of continuously performing smooth pre-waiting operation by reducing the vibration of the pump resulting from the suction of air when a water level is low.This s...  
JP3853255
To provide a hydraulic drive fan cooler which assures high reliability and high durability at a low cost. The hydraulic drive cooling fan unit has a cooling fan 16 for creating a cooling wind for cooling an engine 2, a hydraulic motor 17...  
JP3849734
To lengthen the life of a well by minimizing fluctuations in the water level of the well. The daily average amount of water distribution is set on the basis of prediction of demand for water and normally variable speed intake pumps P1, P...  
JP2006234075
To provide a thrust bearing structure for a fluid compressor capable of canceling thrust force without requiring a special device, and capable of improving reliability.This structure is provided with a balance chamber 24 formed in a hous...  
JP2006233865
To provide an energy-saving lifting pump device and its operating method, for securing an optimum pump operational status, in contradictory pump specifications of high lift and low lift before and after providing siphonage.A plurality of...  
JP2006233793
To provide a liquid supply device capable of reducing vibration and noise of a pump.This liquid supply device has at least a pair of pumps constituted by pump parts 13, 14 incorporating an impeller for absorbing and discharging liquid an...  
JP2006217957
To provide a fire engine which needs only the necessary number of signal lines, does not require continuous operation of a signal generator, and quickly adjusts a rotational speed of an engine for driving a pump for discharging a fire fi...  
JP2006220022
To provide a pump capable of reducing heat generation when a motor generates heat.A current detection means 9 detecting a value of current carried to the motor 4 and a drive circuit 2 having a switching function turning on and off electr...  
JP3840620
To automatically control the second auxiliary pump by the vertical movement of a float-lifted/lowered level switch in a breeding device when an axial flow pump used therein for breeding various live fishes in a breeding tank becomes out ...  
JP2006200132
To provide a dredging device capable of efficient dredging in response to an alluvium state of a sand pocket.A plurality of dredging pumps 8 are suspended in a sedimentary sand section 3 of the sea bottom from a pier 7 arranged in a sand...  
JP2006194185
To provide a high pump head operation control method and a high pump head operation control system for a water feed system driven by a various voltage and a various frequency power source controlled by delivery pressure constant control ...  
JP2006194186
To provide a large flow rate operation control method and a large flow rate operation control system capable of performing operation with room in a capacity of a pump and solving a problem of lack of the flow rate of the pump without cha...  
JP3827911
To ensure drainage even when a pump flow passage is not fully filled with water. A pump flow passage 20 is connected to an intake water tank 10 and a horizontal pump P is installed in the passage 20, whereby water in the tank 10 is sucke...  
JP2006183496
To supply fluid without shortening the pump life and fluctuation of a delivery pressure in supplying the fluid by combining a pump for performing variable-speed operation and a pump for performing constant velocity operation.When pumps 3...  
JP2006177157
To provide an automatic water supply device capable of constructing a feed water pump with different powering characteristics by changing the operation specification of a motor for driving the pump.The automatic water supply device is pr...  
JP2006161791
To provide a water level control device for a plumbing tank capable of preventing accidents due to abnormality in a circuit inside a water level detecting device in advance.The water level control device is equipped with the water level ...  
JP2006164750
To allow a fuel cell system to release a lock in impeller freezing with less amount of heat.A hydrogen circulation pump 21 comprises a pump 51 having an impeller 69, rotation of which transfers hydrogen from a hydrogen tank and exhausted...  
JP3814635
To provide a submersible motor pump having the convenient and, highly reliable function of automatically starting and stopping and its automatic starting and stopping method. The submersible motor pump has a temperature sensor 48 to sens...  
JP3816198
To provide a power system for driving a nuclear reactor coolant recirculation pump consisting of a simplified structure by reducing the number of units of a static type variable frequency supply device ASD at ABWR. At least one of normal...  
JP2006153023
To suppress pressure fluctuation at a time of parallel operation of a plurality of pumps directly connected to a water line main pipe.A plurality of pumps sucking water from a suction pipe directly connected to the waterline main pipe an...  
JP2006153025
To establish a new pump structure increasing overall productivity while improving each function with three forms of a mechanical seal, a canned motor pump and a magnet pump taken into consideration.In a magnet driven type motor pump prov...  
JP3814331
To achieve a light-weight, compact motor pump by a pump casing with a storage chamber for storing a control unit for motor drive control in a motor pump comprising mounting the pump casing at the tip end face part of the motor casing. A ...  
JP2006125275
To provide a performance diagnosing device or system for a fluid machine, capable of easily evaluating a deterioration degree of the fluid machine.This performance diagnosing device for the fluid machine is provided with a predicted perf...  
JP2006118414
To provide a method for supplying water extending life of facility by extending pump start cycle time from completion pressure retention to pump start at a time of water leak operation.In the method for supplying water starting a pump to...  
JP3793885
To provide highly accurate estimated end pressure constant control by obtaining a flow rate signal based on a no-discharge pump head, a push-in pump head or check valve fixing loss head and performing accurate flow rate detection not aff...  
JP2006097662
To provide a control device for a supply water device, and a method for composing the control device at low cost without wasting the performance of control boards for composing a control part.This control device is for a supply water dev...  
JP2006097494
To provide an electric pump capable of increasing the straight advance force and acceleration of a fluid.Double reversely rotating vanes are rotated reverse to each other by the drive force of a driving source. Also, a forward shaftless ...  
JP3781567
To normally start/stop a rotary machine even if an abnormal operation occurs in a CPU or the supply of power to the CPU is cut off. A running controller including the starting and stopping of a rotary machine is provided with a CPU 11, v...  
JP3781546
To make a priming detector small-sized and lightweight and to prevent a malfunction by inclining the lower end or both ends of a connecting pipe which connects the lower section of a container and a pump or a pipe connected to the pump w...  
JP3781140
To reduce kinds of power units to a turbo-molecular pump body having various characteristics. In a turbo-molecular pump having a turbomolecular pump body 2 and a power unit 3 capable of transmitting/receiving a power and a signal to or f...  
JP2006070713
To provide a liquid supply device employing a magnet pump capable of supplying liquid without an overload on the magnet pump even in a small amount of discharge flow.The liquid supply device is provided with a tank 11 for reserving liqui...  
JP2006070543
To provide a stormwater drainage control system capable of carrying out operation control of a stormwater drainage pump, at the same time, automatically making the proper operation control of a private power generation facility supplying...  
JP2006070729
To provide a submersible pump effectively preventing failure and malfunction by breakage or the like and easy to know an operating water level.A mounting rod 29 vertically extending is supported through a support bracket 30 on a side of ...  

Matches 751 - 800 out of 3,477