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JPH10115265A |
To obtain a favorable characteristic at a various operation state by installing a double ring shape arrangement blade extending to near the periphery edge of an impeller and a ring shape pump flow route for pressurizing for covering an i...
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JP2747432B2 |
A fuel pump structure which includes an electrically driven rotor in a sealed housing which has an inlet and an outlet. A single rotor in the housing has three operating areas. At the outer periphery are vanes operating in an annular swe...
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JPH1089292A |
To provide a pump which can hardly be influenced by a conveyance medium, such as fuel, containing foul. A fluid pump to convey fuel especially form the fuel tank of an automobile comprises a pump chamber 11 formed in a pump casing, and a...
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JPH1082396A |
To provide a pump to satisfy a highly hygienic demand for a long period of time. A pump 20 has a rotor 80 in a pump passage 25, the rotor 80 has a pump element 90 furnished with a waveform boundary surface extending in the radial directi...
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JPH1082395A |
To realize sufficient pump performance while increasing the degree of freedom of the water content rate of a medium by forming a rotor of a synthetic resin in which the dimension changing rate of the rotor becomes a specific % or below a...
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JP2566377Y2 |
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JPH1077982A |
To provide a pump device by which the lock of a rotary member by the eduction of an impurity is prevented without the deterioration of a pump performance by the increase of the clearance between time rotary member and a pump room wall su...
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JPH1061581A |
To facilitate the positioning at the time of screwing an impeller to a shaft of a driving unit, and to improve the assembling workability by providing one or more holes or recessed parts in a disc-shaped impeller having a blade, which is...
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JPH1047291A |
To provide a liquid pump and a manufacturing method for the pump, by which manufacture can be simplified and the composition size and weight can be reduced. A needle 5 of a motor-driven driving device is rotated with a vertical axis of r...
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JPH1047279A |
To prevent the occurrence of cavitation, and avoid generation of a noise and a cause of failure by arranging a fixed volume pump on the delivery side of a centrifugal pump, arranging a pressure adjusting valve between the delivery side o...
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JP2714814B2 |
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JP2561580Y2 |
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JP2698244B2 |
A fuel pump for an internal combustion engine has a rotor which is driven by the extended, rotating, mounting shaft of an electric motor armature. The shaft, with a round cross-section, extends through a round hole in the rotor with a fi...
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JP2693236B2 |
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JP2555533Y2 |
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JPH09511812A |
PCT No. PCT/DE96/00024 Sec. 371 Date Aug. 21, 1996 Sec. 102(e) Date Aug. 21, 1996 PCT Filed Jan. 10, 1996 PCT Pub. No. WO96/24769 PCT Pub. Date Aug. 15, 1996The flow pump has an impeller (22), revolving in a pump chamber, which on each o...
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JP2665259B2 |
PURPOSE:To perform the feed of washing liquid to two systems with the aid of a single pump by a method wherein a bypass flow passage through which a part of washing liquid is caused to bypass if formed in a position in a flow passage run...
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JP2661019B2 |
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JPH09242690A |
To provide a low noise type vortex pump whose efficiency is improved. A double-blade impeller 30 is arranged between a casing 10 and a casing 20, and a channel formed of the casings 10, 20 comprises a pump channel X, a communicating pass...
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JPH09242689A |
To provide a vortex pump whose delivery pressure is high while using a double-blade impeller for reducing a noise. A double-blade impeller 30 is rotatably arranged between a casing 10 and a casing 20. A channel formed of the casings 10, ...
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JP2648660B2 |
PURPOSE: To provide a regenerative fuel pump having good performance under low-temperature starting conditions and high-temperature starting conditions. CONSTITUTION: A pump mechanism 46 of pump 20 includes an impeller 48 coupled to a ro...
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JP2650102B2 |
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JP2643476B2 |
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JP2643477B2 |
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JPH09217698A |
To return water at the discharge side of an impeller to a water absorption well in a short period of time under pumping-discontinued operation by providing a ring body to making a gapped passage provided between a casing and the outer pe...
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JP2637477B2 |
The present invention relates to a vertical, self-priming centrifugal pump located under a protective slab comprising a fixed bowl welded to the intake and delivery pipework and movable fittings removable through the top, characterised i...
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JPH09189295A |
To facilitate the control of a clearance between the rotor and the stator of a type of pump that fluid is forcibly fed by viscous resistance. This pump is equipped with a rotor 4 and a stator 3 which is arranged to be positioned near to ...
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JP2626303B2 |
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JPH09126178A |
To reduce noise by reducing sound caused by wind cutting sound from impeller blades which is caused by abrupt break-off of spiral vortex flow of fuel by a partition wall of in a pump chamber. A fuel pump device comprises a wall member de...
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JP2534947Y2 |
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JPH09119390A |
To reduce noises by reducing variations in pressure caused by the impact of a swirl of fuel on the partition wall of the wall member of a pump room. This device has a wall member for forming a pump room surrounding an impeller 21, an inl...
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JPH09112477A |
To capacitate a press-fitting part to be easily pressed in a specified state even in the case where the processing of height size accuracy is not yet performed in particular, in regard to the outer diametral dimensions of the press-fitti...
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JP2604077B2 |
PURPOSE: To reduce noise generated in the vicinity of slit portions of a commutator during operations of a built-in motor type pump device. CONSTITUTION: A pump unit and a DC motor are enclosed in a casing 1. A gap space 31 is provided b...
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JP2532138Y2 |
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JPH0996289A |
To provide a motor-driven fuel pump excellent in assemblability with low driving noise of the pump. In a casing 31, a conical recessed part 35 is formed, in its upper bottom part 33, and a delivery hole 36 is drilled. An impeller 10 has ...
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JPH0988869A |
To allow an impeller to follow the rapid fluctuation of the number of revolution without damaging the mounting property, and allow the impeller to be surely turned at high speed. Drive side permanent magnets 5b, 6a, 7a are provided on a ...
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JPH0988865A |
To reduce the contact resistance of an impeller with a casing to store the impeller when the impeller is rotated, and to prevent the leakage of the flowing-in fuel. A casing 16 of a friction regenerative pump P is provided with an outer ...
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JP2594752B2 |
A fluid pump with rotary impeller is disclosed which comprises an electromagnetically-driven, bearing-free, seal-free rotary impeller levitated by localized opposed, repulsive, permanent magnetic forces and by fluid forces, or by localiz...
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JPH0979170A |
To inexpensively improve pump efficiency of a side flow type turbine pump with simple constitution. A projection 25 extending in the rotational direction of an impeller 21' is also arranged on an outer peripheral side inner wall surface ...
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JPH0979169A |
To inexpensively improve pump efficiency of a side flow type turbine pump with simple constitution. In the vicinity of a delivery port 2 of fuel, an opening width of a fuel passage 24B directly connected to the delivery port 2 is made la...
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JPH0979168A |
To provide a side flow type turbine pump whose pump efficiency can be further enhance with simple constitution. A projection 24 extending in the rotational direction of an impeller 21' is arranged on an inner peripheral side inner wall s...
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JPH0979167A |
To provide a side flow type turbine pump by which vibration, a noise, abrasion or the like can be reduced with simple constitution. A communicating passage 25 to communicate fuel passages 24A and 24B with each other and a radial pressing...
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JPH0968184A |
To provide a vortex flow pump which decreases cutoff shaft power or which can increase a maximum supply amount of water without increasing the cutoff shaft power. In a vortex flow pump having a casing formed with a waterway 2 in a circum...
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JP2587942B2 |
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JP2578509B2 |
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JP2578510B2 |
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JPH0932784A |
To provide a fuel supplying pump in which a washer for preventing abrasion of a motor rotor resin part from being damaged can be assembled with good workability while preventing damage of the rotor shaft. A pump 11 and a pump driving mot...
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JPH0914173A |
To provide a friction generating pump to increase a delivery flow rate and a delivery pressure and improve pump efficiency. A rotating approximately disc-form impeller 31 contained in a casing has recessed grooves 34 partitioned by a plu...
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JP2521862Y2 |
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JPH08334097A |
PURPOSE: To inexpensively enhance pump efficiency of a side flow type turbine pump with simple constitution. CONSTITUTION: Plural recessed parts 25A and 25B are arranged on the obverse and reverse of an impeller 21', and a window 22' to ...
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