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Matches 751 - 800 out of 7,002

Document Document Title
JP2015010479A
To provide a pump which can suppresses an increase of a lift at shutoff time.A pump comprises: an outer cylinder casing in which an internal passage 8 reaching a discharge port 18 from a suction port 17 is formed; an impeller which is ac...  
JP2015012738A
To achieve energy saving of power generation energy for electrical apparatuses in a ship, including an electric motor for driving a pump or the like.A ship includes electric motors 14a-14d for driving pumps 11a-11d. The electric motors 1...  
JP5638502B2  
JP2014222038A
To restrict occurrence of hunting of a liquid level and make an average cumulative operation time of a plurality of pumps in pump equipment for discharging liquid under application of a plurality of prior standby type pumps.Pump equipmen...  
JP2014222042A
To provide a well pump device that allows a control pressure value to be checked during operation.When control pressure information is changed, display means displays the control pressure information together with a status of the well pu...  
JP5629614B2  
JP5631236B2  
JP2014214743A
To provide a pump device capable of automatically determining an optimal target pressure control curve according to an operation condition.A pump device comprises: a pump 2; a motor 3 for driving the pump 2; a driving device 20 for speed...  
JP2014214715A
To provide a pump device capable of automatically determining an optimal target pressure control curve according to an operation condition.A pump device comprises: a pump 2; a motor 3 for driving the pump 2; a driving device 20 for speed...  
JP2014206122A
To provide a pump device capable of detecting a liquid leakage exceeding a predetermined amount and occurring through a mechanical seal during normal time and also detecting a liquid leakage occurring due to failure of the mechanical sea...  
JP2014202144A
To provide a diagnostic method for centrifugal pump capable of recognizing a cause of reducing performance even if the pump is disassembled and capable of estimating a proper parts replacing time.In a centrifugal pump having wear compone...  
JP5612450B2  
JP5613520B2  
JP2014196709A
To improve it with a simple configuration that a self-priming pump performs a self-priming operation under judgment on its reliability.An operation device (invertor 30) for a self-priming pump of this invention comprises a current sensor...  
JP2014194188A
To provide a pump unit capable of properly responding to a demanded discharge quantity without cutting a runner and preparation of many impellers with different sizes as well as capable of restricting increase in cost by efficiently usin...  
JP2014187753A
To provide an on-vehicle feeding controller capable of effectively suppressing generation of wasteful fuel consumption without depending upon determination based on worker's visual observation and even when no workers are present.The on-...  
JP5587386B2  
JP5587270B2  
JP2014163279A
To provide a technique that can appropriately cool a control circuit.A fuel pump 10 comprises: a pump part 30, a motor part 50 for driving the pump part 30; and a housing 2 for housing the pump part 30 and the motor part 50. The motor pa...  
JP5582653B2  
JP2014156789A
To provide a submersible pump that can keep high shaft seal performance.A submersible pump according to an embodiment of the present invention comprises: an electric motor; a pump part including an impeller connected to a rotating shaft ...  
JP2014141939A
To provide a self-priming pump that can secure a high self-priming performance and shorten a self-priming time, and a method for controlling the self-priming pump.A self-priming pump relating to one embodiment comprises: a pump unit havi...  
JP2014138646A
To provide a sprinkler fire-extinguishing pump system capable of executing a jockey pump operation and a sprinkler operation by dispensing with a jockey pump.A control device of each story zone of a medium-high rise building includes: se...  
JP2014138497A
To prolong time of operation with power supplied from a power storage device.A water supply device 300 comprises: a motor pump 310 for transferring water; a power unit 320 which supplies first power supplied from a commercial power suppl...  
JP5550960B2  
JP5543608B2  
JP2014121371A
To provide a fire pump system that meets a standard by controlling an inexpensive general-purse fire pump by inverter drive.An inverter drive fire pump system includes a fire pump for supplying water from a suction side to spray means of...  
JPWO2012099242A
As a pump can be controlled with a fixed flow secured also so that revolving speed becomes low, it enables it to meet the request of energy saving. The pump which pressurizes water and returns water, and the frequency converter which sup...  
JP5524285B2  
JP5518094B2  
JP5513149B2  
JP5508822B2  
JP5506347B2  
JP2014095354A
To provide a pump system that can detect backflow of liquid flowing in a pump pipe without providing a backflow detector in the pump pipe.A pump system comprises: a plurality of pump units 2A, 2B, and 3C each including a pump P and a mot...  
JP5492910B2  
JP2014080950A
To provide a low cost water supply system in which a water supply device have functions for specifying a pressure desired value, an initial time inverter frequency (a desired flow rate) and a required number of pumps and a useless operat...  
JP2014080874A
To suppress the heat generation of a bearing due to flow rate deterioration by stopping rotations of a rotor, when pump efficiency is deteriorated.A control portion 7 for controlling feeding voltage to a stator 5 so as to keep a predeter...  
JP2014074362A
To remove floating contaminant in self-priming pump through repetitive withdrawal operation.A self-priming pump system 1 comprises a lift pump 11 for sucking up sewage water W1, self-priming tank 13 for performing gas-liquid separation o...  
JP5475607B2  
JP2014062505A
To provide a water supply device in which starting frequencies of pumps are managed to a prescribed value, and a wasteful operation is excluded while equalizing operation loads in operating the plurality of pumps.A water supply device in...  
JP5460425B2  
JP2014055532A
To provide a water supply device capable of managing a starting frequency of a pump to a prescribed value, and excluding a wasteful operation while equalizing operation loads in operating a plurality of pumps.A water supply device in whi...  
JP5443645B1
[Subject] In a device which performs operation and a stop of a submerged pump using the conventional water level sensor, and controls at least drainage tank water, a water level sensor breaks down well by drainage, water level control ca...  
JP2014043838A
To provide a feed-water pump and a full water level detecting method of the feed-water pump capable of properly judging whether an internal part of a pump body arrives at a full water level when performing the priming water even in the c...  
JP2014043800A
To provide a pump control device in which an additional inverter device can be easily installed at low cost and that can continue pump operation even if a state quantity measuring device such as a pressure sensor fails.A first inverter d...  
JP5439378B2  
JP2014037776A
To provide a technique for removing a foreign body caught between an impeller and an inner wall opposed thereto in an electric pump.An electric pump 2 comprises: a motor 10 having a rotor 6 that is axially movable by a predetermined dist...  
JP2014037840A
To provide a fire pump device that can work reliably and effectively under disadvantageous conditions when a disaster occurs.A fire pump device comprises: a pump 10 for supplying water to water discharge means 50 provided to a pipe on ea...  
JP2014037807A
To provide a double suction volute pump for low-load starting that can start an electric motor by a reduced-voltage starting method.A double suction volute pump for water comprises: an impeller rotating about an axis line; and a casing i...  
JP5427620B2  

Matches 751 - 800 out of 7,002