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Patent Searching and Data


Matches 601 - 650 out of 6,947

Document Document Title
WO/1990/015251A1
The present invention relates to a method and apparatus for controlling the operation of a centrifugal pump. The method and apparatus in accordance with the present invention is especially developed for eliminating or minizing the proble...  
WO/1990/013460A1
A double-acting pump has two outlet channels (47, 48), which can be selectively charged with liquid in function of the direction of rotation, and two movable sealing membranes (36, 37) each of which is associated with an outlet channel (...  
WO/1988/007126A1
A drive assembly brake (80) is mounted in the gearbox (22) connecting a motor driven input shaft (24) to an output shaft (26), the output shaft being connected by a tubing string (10) to a submersed rotary pump. The gearbox includes an o...  
WO/1988/002831A1
Automatic recirculation valve for use in installations where a minimum flow is required for protecting such as centrifugal pumps. The valve includes a valve housing (13) with a plunger (12) controlled by a main flow and a spring (2). The...  
WO/1986/001861A1
Closed piping systems for liquids require pressure maintaining arrangements to define the level of pressure in the piping system in relation to the surrounding atmosphere. Various values of heights of delivery along the piping system are...  
WO/1985/001087A1
In a float switch, which is provided particularly for immersion pump systems with an electric motor connectable and disconnectable as a function of the level and with a pump coupled thereto and immersed into the liquid to be discharged a...  
WO/1983/004286A1
The method is applied to a turbomachine, particularly to a pump, and to a support for a pressure sensor of a gaseous or liquid fluid, particularly an electronic pressure pick-off. The pressure or differential pressure of the fluid (3) co...  
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...  
JP2016164377A
【課題】クローズドサイクルで構成され、安 定した過冷却度の制御により、送液ポンプの キャビテーションの発生を防止して安定した 運転が可能な動力発生装置を提供する。...  
JPWO2014068728A1
【課題】電力需要の大きい時間帯の給水ポン プによる電力消費を抑制する。【解決手段】 給水制御システム1は、第1の水槽(高置水 槽13)、水道事業者から供給される水...  
JP5985330B2  
JP2016160792A
【課題】高精度でポンプ装置の動作を制御す ることが可能なポンプユニット、及びポンプ の制御方法を提供する。【解決手段】一実施 形態にかかるポンプユニット1は、複数...  
JP2016160769A
【課題】低コストかつ簡素な構成および方法 により、渦の発生によるポンプの空気吸込み を抑制するとともに高水位のときには大量の 水を排水可能なポンプシステムを提供す...  
JP2016160768A
【課題】低コストかつ簡素な構成または方法 により、吸水槽の水位の急激な低下を抑制す ることによってポンプの停止頻度を低減させ たポンプシステムを提供する。【解決手...  
JP2016156345A
【課題】設備負担の増大を抑制しつつ個々の ポンプの運転効率を推定することができる運 転効率推定システム、運転効率推定方法、運 転効率推定装置及びコンピュータプログ...  
JP5983581B2  
JP5982215B2  
JP5982911B2  
JPWO2014054554A1
本発明は、水道本管からの水を加圧して集合 住宅や商業ビルなどの建物に給水を行う給水 装置に関するものである。給水装置は、ポン プ(1)の回転速度の低下から少水量状...  
JPWO2014051070A1
遠心力を利用して、簡単な構成で、一定の速 度で液体を汲み上げて輸送することが可能な 液体輸送装置を提供する。液体輸送装置1は 、液体300を収容するU字形容器11...  
JP5976496B2  
JP2016148261A
【課題】流体の吐出量調節が円滑に行え、回 転軸の軸芯方向のサイズがコンパクトな遠心 ポンプを提供する。【解決手段】ハウジング 1と、ハウジング1の内部に回転自在に...  
JP5970827B2  
JP2016142184A
【課題】長期間作動しない場合であっても、 インペラ等の固着や、孔の詰まり、圧力検出 部の不具合等を防止すると共に、故障を事前 に発見できる。【解決手段】消火用水を...  
JP2016138539A
【課題】 落水管が短くて済み、落水設備がコンパクト であると共に、異物も詰まりが生じ難い落水 機構を有する立軸ポンプを提供すること。【 解決手段】 羽根車ケーシング...  
JP2016130487A
【課題】小水量域での消費電力を低減し、大 水量域のポンプ効率を向上させるために片面 インペラを用いた場合であっても、インペラ とケーシングライナとの接触を防止し、...  
JP2016125477A
[Subject] Provide a boiler feeding device which can raise pump efficiency. [Means for Solution] Suction pipe 21 by which boiler feeding device 1 was connected to a water supply source, and branch pipe 23 which branches suction pipe 21 to...  
JP2016116409A
[Subject] A motor controlling device which can control continuously the amount of discharge of cooling water by a water pump is provided. [Means for Solution] Position detector circuit 116 changes into a pulse signal induction voltage wh...  
JP5921085B2  
JP5921160B2  
JP2016089645A
To provide a water pump capable of shortening time for engine warm-up operation.A water pump 1 comprises: a first gear 12 that rotates about a first axial center X by a driving force applied from outside; a second gear 22 that is engaged...  
JP2016089646A
To provide a water pump capable of shortening time for engine warm-up operation.A water pump 1 comprises: a first gear 12 that rotates about a first axial center X by a driving force applied from outside; a second gear 22 that is engaged...  
JP2016079951A
[Subject] The small weight saving of the water level maintenance device is carried out, and height and weight of pump equipment are reduced. [Means for Solution] Water level maintenance device 4 has water level detecting device 18 and in...  
JP2016513194A
A water level detection control circuit applied to the drain pump containing an electric power supply unit, a detection unit, and a water pump unit and an operating method for the same are provided. An electric power supply unit is used ...  
JP5914365B2  
JP2016050524A
To provide a water supply device capable of suppressing power consumption during a backup operation mode.A water supply device 10 includes a water supply pipe 40, pumps 51, 52, a flow sensor 70, a pressure sensor 60 and a control board 5...  
JP2016048052A
To provide a submerged pump which enables improvement of heat radiation performance of a control device.A submerged pump includes: a motor 10; a pump 11 connected with the motor 10; a control device 12 including a cover 21 made of a resi...  
JP2016044555A
To provide a pre-standby pump capable of shortening air lock operation state time.A pre-standby pump includes a lifting pipe 5 for transferring water sucked by an impeller 10 to a delivery water tank 31, a flap valve 23 provided on an op...  
JP2016044557A
To make the invention relate to feed water equipment, in particular, to operation control of a household well water pump, and to solve the problem that the conventional invention leaves a temperature-rise preventing method of a repetitiv...  
JP5890669B2  
JP2016037930A
To provide a less-expensive automatic alternate operation device for non-automatic operation type electric pump and a control method therefor attaining an easy height adjustment work for detector units, enabling a small-sized and light-w...  
JP5872340B2  
JP5868846B2  
JP5857089B2  
JP2016017418A
To detect cavitation characteristic of a hydraulic machine and diminishing or eliminating the strength of the cavitation.A direct acting type hydraulic machine in which a single shaft is shared between an electric motor or an electric ge...  
JP5841386B2  
JP2016000985A
To provide a pump control system capable of prolonging the service life of a plurality of electric pumps for feeding fluid to a common fluid flow passage.A pump control system includes a plurality of electric pumps P for feeding fluid to...  
JP5839803B2  
JP2015222062A
To provide a liquid supply device capable of restricting occurrence of repetition of increasing or decreasing of the number of operating pumps.This invention has a control panel 110 including a micro-computer 111 for use in controlling o...  
JP2015218586A
To provide a pump device which prevents fastening of a rotation part of an impeller and the like and a fixing part of a casing, a casing cover and the like caused by rusting locking and water scale locking.A pump device includes: a pump ...  

Matches 601 - 650 out of 6,947