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JP4849932B2 |
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JP4851774B2 |
To provide an electric power system of a recirculation pump and its control method capable of continuously operating two recirculation pumps in a velocity balanced state without stopping either recirculation pump even in failure or maint...
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JP4841579B2 |
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JP4843385B2 |
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JP4842676B2 |
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JP4838551B2 |
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JP4833118B2 |
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JP4829050B2 |
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JP4822336B2 |
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JP4822745B2 |
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JP4812327B2 |
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JP4804747B2 |
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JP4804171B2 |
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JP2011214534A |
To enhance discharge performance in low-speed rotation of a water pump and to reduce the discharge performance in high-speed rotation, and to prevent a reduction in the discharge performance by other members.An impeller in the water pump...
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JP4795172B2 |
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JP2011202509A |
To provide a high specific-speed pump in which an axial power in a small water volume area during a cutout operation or the like is reduced despite a simple structure.The axial-flow pump P includes a spindle 2 rotatably disposed in a cas...
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JP4789333B2 |
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JP2011185190A |
To provide an efficient control device integrated type motor pump.The control device integrated type motor pump includes a pump 1, a motor 2 driving the pump 1, a control device 3 controlling the motor 2, and a discharge side pressure me...
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JP4778994B2 |
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 disch...
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JP4772968B2 |
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JP4767488B2 |
In a magnetically levitated pump (1), an impeller-side ferromagnetic body (51) (second ferromagnetic body) provided on a circumferential surface of an impeller (23) facing a casing unit (50) on the side of a position sensor and a casing-...
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JP4768133B2 |
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JP4769937B2 |
In centrifugal pumps 10, 30, 60, 70, and 80 having a rotating centrifugal impeller 14, the flow rate andheadof the pumps are estimated on the basis of transverse force applied to the centrifugal impeller 14 during rotation of the centrif...
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JP2011157894A |
To provide a method and device for predicting a cavitation erosion quantity in a fluid machine, enabling easy prediction of the cavitation erosion quantity.The method includes mounting a vibration acceleration sensor on the fluid machine...
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JP4743147B2 |
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JP4741312B2 |
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JP4733381B2 |
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JP4732229B2 |
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JP4706437B2 |
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JP4708273B2 |
The present invention discloses a system of energy-efficient and constant-pressure fluid-transport machines coupled in parallel, which can flexibly and massively provide gas and water to every fabrication unit. The system of the present ...
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JP4699447B2 |
A method of operating a delivery apparatus and a delivery apparatus are disclosed for the continuous delivery of a liquid. The method and the apparatus are suitable in particular for use in a water injection system for injecting water in...
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JP4697471B2 |
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JP4690970B2 |
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JP4694023B2 |
To provide a centrifugal liquid pump usually operated in a low power consumption state and provided with an automatic correcting function of improving rigidity when rigidity of the centrifugal liquid pump is reduced. The centrifugal liqu...
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JP4689794B2 |
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JP4685227B2 |
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JP4680922B2 |
In a conventional water discharge pump assembled in an air conditioner, the rotation of a blade wheel produces cavitation to cause a problem with quietness. A vertical shaft water discharge pump of the invention has a rotor (23), a casin...
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JP4678798B2 |
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JP4676721B2 |
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JP4677081B2 |
To provide a centrifugal liquid pump device allowing determination of a loss of synchronization in a magnetic coupling from the outside and having a loss of synchronism detection function causing less error determination in a non-synchro...
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JP4678799B2 |
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JP4675057B2 |
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JP4675056B2 |
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JP4668403B2 |
To provide a water feeding device capable of detecting, using a relatively simple method without use of an expensive flow switch, a shutoff operating condition wherein the amount of water is zero, and then being operated for stopping a s...
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JP2011064113A |
To provide an automatic pressure tank type pump that replenishes air into a pressure tank when an inching occurs.An automatic pressure tank type pump 1 includes a pump head 6, a pressure tank 10 that accumulates water pressurized by the ...
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JP4660320B2 |
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JP4651157B2 |
To provide a method for controlling a magnetic levitation pump which can suppress variation of a rotational speed when a constant rotational speed mode is switched to a constant motor current mode. When a switching circuit SW is switched...
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JP4646393B2 |
To provide a control circuit for a magnetic levitation type pump capable of stably supporting an impeller in the rotation by compensating a gyro moment generated to the rotation disturbance to a pump without enlarging the pump size, even...
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JP4647071B2 |
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JP4646026B2 |
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