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Patent Searching and Data


Matches 501 - 550 out of 6,720

Document Document Title
WO/1983/003461A1
A device allows to reduce the power used by the motor of a circulation pump actuated by an electric motor for heating installations. The reduction is obtained by interrupting periodically the network power supply by means of an electroni...  
JP5587386B2  
JP5587270B2  
JP2014163279A  
JP5582653B2  
JP2014156789A  
JP2014141939A  
JP2014138646A  
JP2014138497A  
JP5550960B2  
JP5543608B2  
JP2014121371A  
JP5524285B2  
JP5518094B2  
JP5508822B2  
JP5513149B2  
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  
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...  
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...  
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  
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...  
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...  
JP5427620B2  
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...  
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 ...  
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  
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...  
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 ...  
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...  

Matches 501 - 550 out of 6,720