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Matches 651 - 700 out of 6,861

Document Document Title
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...  
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  
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  
JP2014031796A
To provide a water supply device that can prevent water hammer from occurring in a case where a pump is activated first after a water supply device stops due to power failure or failure of the water supply device.A water supply device 1 ...  
JP2014031749A
To provide a pump device which makes the output of a high efficiency electric motor equivalent to the output of an existing electric motor by a controller, and which automatically controls to prevent the increase of power consumption, ev...  
JP5417147B2  
JP5412173B2  
JP5408707B2  
JP5410385B2  
JP2014020230A
To reduce windage loss in a motor unit that includes a plurality of motors and a pump system that includes a plurality of motors.A plurality of pumps (20, 20) is provided such that respective inlets (21) are connected to a common pipe (4...  
JP2014015902A
To provide a pump unit capable of ensuring redundancy without using a plurality of pump unit.The pump unit provided in a pipeline for feeding a liquid at a preset unit flow rate, comprises n+1 pumps and a constant flow rate valve. The pu...  
JP5400117B2  
JP5396504B2  
JP5395944B2  
JP5386419B2  
JP5386210B2  
JP2013256926A
To provide a drainage pump that can easily and reliably drain foreign matter by stopping a motor or reversely rotating the motor when the foreign matter is sucked into the drainage pump, and to provide a method of controlling the drainag...  
JP2013256867A
To provide a water feed system configured to solve problems by enabling a water feed system side to have a pressure target value, an initial inverter frequency (target flow rate) and a function for designating the number of necessary pum...  
JP2013256869A
To provide a water supply pump device, capable of controlling the stop of a water supply pump when the water amount is excessively small, and controlling the pressure fluctuation when restarting the water supply pump.A water supply pump ...  
JP2013256868A
To provide a water feed pump device suppressed in an excessive/insufficient water amount stop and a pressure variation at restart.In a water feed pump device, a variable speed control device has: upper limit target pressure on a piping r...  
JP5371673B2  
JP5364043B2  
JP5356180B2  
JP2013543074A  
JP5348752B2  
JP5347171B2  
JP2013227975A
To enable estimation of a characteristic value (pressure, flow rate) of a pump circuit with an extremely high degree of certainty independently of a standard pump curve without the use of a sensor within a pump circuit.In relation to a m...  

Matches 651 - 700 out of 6,861