РОТОРНАЯ ВИНТОВАЯ МАШИНА ОБЪЕМНОГО ТИПА И СПОСОБ ПРЕОБРАЗОВАНИЯ ДВИЖЕНИЯ В ОБЪЕМНОЙ ВИНТОВОЙ МАШИНЕ

Изобретение относится к роторной винтовой машине объемного типа. Машина содержит корпус (30), имеющий основную ось X, и два элемента (10, 20), при этом первый элемент (20) окружает второй элемент (10). Первый элемент (20) шарнирно установлен в корпусе (30) и сам может поворачиваться вокруг своей оси (Xf), совпадающей с основной осью X, согласно поворотному движению, в то время как ось (Хm) второго элемента (10) обращается вокруг оси первого элемента (Xf) согласно движению обращения с длиной Е в качестве радиуса. Машина дополнительно содержит синхронизатор (34; 36; 38; 40), синхронизирующий поворотное движение и движение обращения так, что рабочая среда совершает объемное перемещение, по меньшей мере, в одной рабочей камере (11), ограниченной наружной поверхностью (22) первого элемента (20) и внутренней поверхностью (12) второго элемента (10). Задача изобретения - расширение технического и функциональных потенциалов, уменьшение угловой протяженности термодинамических циклов, повышение КПД ...

ДВИГАТЕЛЬ ОБЪЕМНОГО ТИПА С РАДИАЛЬНО ОГРАНИЧЕННЫМ ЗАЦЕПЛЕНИЕМ РОТОРА

Группа изобретений относится к области бурения скважин. Сборка бурового снаряда, который содержит сборку забойного двигателя, содержащую верхний переводник, содержащий бурт, имеющий первый внутренний диаметр вблизи дистального конца верхнего переводника, и рабочую пару, содержащую винтовой двигатель, имеющий статор и ротор, выполненные с возможностью эксцентрического вращения при прохождении бурового раствора через двигатель и имеющие ближний конец и дистальный конец, ближний конец статора прикреплен к дистальному концу верхнего переводника; зацепление ротора, содержащее вал, имеющий ближний конец и дистальный конец и эксцентрически вращающийся посредством трансмиссии эксцентриковой передачи ротора; дистальный конец вала напрямую или опосредованно прикреплен к ближнему концу ротора; а вал проходит от дистального конца зацепления ротора в верхний переводник на расстоянии мимо бурта, при том что по меньшей мере часть вала, проходящая мимо бурта, имеет внешний диаметр меньше, чем первый внутренний ...

УСТРОЙСТВО ДЛЯ ИНЖЕКЦИИ ТЕКУЧЕЙ КОМПОЗИЦИИ В РАСПЛАВЛЕННЫЙ ПОЛИМЕРНЫЙ МАТЕРИАЛ И СПОСОБ ЕГО ИСПОЛЬЗОВАНИЯ

Группа изобретений относится к устройству для инжекции текучей композиции в расплавленный полимерный материал и способу его использования. Устройство (2) содержит первый насос (8) и шестеренный насос (12), расположенные последовательно в потоке текучей среды между резервуаром (4) для текучей композиции, подлежащей инжекции, и выпускным отверстием устройства. Первый насос (8) выбран из диафрагменного насоса и винтового насоса кавитационного типа. Группа изобретений направлена на обеспечение эффективного дозирования широкого спектра типов композиций. 2 н. и 28 з.п. ф-лы, 11 ил.

НАСОСНАЯ СИСТЕМА ДЛЯ ПОЛИМЕРНЫХ МАТЕРИАЛОВ

НАСОС ВЫСОКОГО ДАВЛЕНИЯ

СИСТЕМА ВПРЫСКИВАНИЯ ТОПЛИВА И ПОГРУЖНОЙ НАСОСНЫЙ МОДУЛЬ ДЛЯ СИСТЕМЫ ВПРЫСКИВАНИЯ ТОПЛИВА

... 1. Система (1) впрыскивания топлива в двигатель внутреннего сгорания, прежде всего система "common rail", имеющая электрический подающий насос (2), который предназначен для подачи текучей среды, прежде всего для подачи топлива (19) в системе (1) его впрыскивания, и имеет приводную часть (22), оснащенную электродвигателем с электронной коммутацией, и насосную часть (23), образующие единый агрегат (24), отличающаяся тем, что электрический подающий насос (2) приспособлен для его размещения в погружном насосном модуле (20), встраиваемом в топливный бак (5) системы (1) впрыскивания топлива.2. Система (1) впрыскивания топлива по п. 1, отличающаяся тем, что электрический подающий насос (2) механически зафиксирован в или на погружном насосном модуле (20), прежде всего защелкивающимся соединением (25, 25') или винтами.3. Система (1) впрыскивания топлива по п. 1, отличающаяся тем, что электрический подающий насос (2) приспособлен для незакрепленного размещения в погружном насосном модуле (20).4.

OELPUMPE VARIABLER LEISTUNG.

Hydraulischer Fahrzeug-Schwingungsdämpfer mit einer Rotationskolbenmaschine

Die Erfindung betrifft einen hdraulischen Schwingungsdämpfer im Fahrwerk eines Fahrzeugs, dessen zwischen Arbeitskammern überströmendes Hydraulikmedium durch eine als Zahnringpumpe ausgebildete Rotationskolbenmaschine geführt ist, an welche ein als Motor oder Generator betreibbare Elektromaschine angekoppelt ist, wobei die Zähne des Innenzahnrades der Rotationskolbenmaschine und/oder des dieses umgebenden Zahnringes der Rotationskolbenmaschine in einer die Drehachse der Rotationskolbenmaschine enthaltenden Schnittebene betrachtet im Übergang von zumindest einer ihrer Seitenflanken zur dem jeweiligen Gegenstück, d. h. dem Zahnring oder dem Innenzahnrad zugewandten Oberfläche hin, zumindest bereichsweise fasenartig oder abgerundet gestaltet sind. Damit wird die Geräuschentwicklung erheblich reduziert.

Pumpenantriebsanordnung

Die Erfindung betrifft eine Pumpenantriebsanordnung (70) zum Antreiben mindestens einer Fluidpumpe (33,34) in einer Fluidanordnung.Um die Pumpenantriebsanordnung (70) zu vereinfachen, umfasst die modular aufgebaute Pumpenantriebsanordnung (70) eine mit mindestens einem Elektromotor (14) und einer lokalen Steuerung (20) ausgestattete Antriebseinheit (10), die mit mindestens einer Pumpeneinheit (31,32) koppelbar ist.

MPE-ACHSSATZ MIT GEMEINSAMER ECU

Eine Vorrichtung (1) zum Bereitstellen von hydraulischer Energie in einem Fahrwerksystem (2) eines Fahrzeugs umfasst eine erste hydraulische Pumpe (11) und einen ersten Elektromotor (12) zum Antreiben der ersten hydraulischen Pumpe, eine zweite hydraulische Pumpe (21) und einen zweiten Elektromotor (22) zum Antreiben der zweiten hydraulischen Pumpe und eine gemeinsame Elektronikeinheit (30), welche eingerichtet ist, den ersten und den zweiten Elektromotor anzusteuern, wobei die beiden Elektromotoren und die beiden Pumpen vorzugsweise baugleich ausgestaltet sind und/oder jeweils erste und zweite Motor-Pumpe-Gruppen (12, 20) bilden.

Ventilanordnung, insbesondere Rückschlagventil mit eingepresstem Kugelhalter

Ventilanordnung (100), welche angepasst ist, eine Fluidströmung in eine erste Richtung zuzulassen und in eine zweite, der ersten Richtung entgegengesetzte Richtung zu blockieren, wobei die Ventilanordnung (100) umfasst:- einen Fluidkanal (14), einen Ventilsitz (101) und einen in dem Fluidkanal (14) angeordneten, beispielsweise rotationssymmetrischen oder kugelförmigen, Schließkörper (102), wobei der Schließkörper (102) konfiguriert ist, in einer Position, in der er an dem Ventilsitz (101) anliegt, eine Fluidströmung in die zweite Richtung zu verhindern und, wenn der Schließkörper (102) von dem Ventilsitz (101) abgehoben ist, eine Fluidströmung in die erste Richtung zuzulassen,- einen in dem Fluidkanal (14) angeordneten Schließkörperhalter (110), der konfiguriert ist, in einer Position des Schließkörpers (102), in der der Schließkörper (102) von dem Ventilsitz (101) abgehoben ist, eine Bewegung des Schließkörpers (102) in die erste Richtung einzuschränken,- wobei der Schließkörperhalter ...

Fluessigkeitsfoerdereinrichtung,insbesondere fuer OElbrenner

Ölpumpe

Eine Ölpumpe wird bereitgestellt, welche einen Nockenring 103 aus einem Material mit einem ersten linearen Ausdehnungskoeffizienten, ein Pumpenelement 104, das drehbar in dem Nockenring 103 angeordnet und in der axialen Länge kleiner als der Nockenring 103 ist, ein erstes Gehäuseelement 101, das auf einer der axial gegenüberliegenden Seiten des Nockenrings 103 angeordnet ist und aus einem Material mit einem zweiten linearen Ausdehnungskoeffizienten, der größer als der erste lineare Ausdehnungskoeffizient ist, gefertigt ist, und ein zweites Gehäuseelement 102, das auf der anderen der axial gegenüberliegenden Seiten des Nockenrings 103 angeordnet ist und aus einem Material mit einem dritten linearen Ausdehnungskoeffizienten, der größer als der erste lineare Ausdehnungskoeffizient ist, gefertigt ist, umfasst.

Pump e.g. oil pump, drive arrangement for use in hybrid vehicle drive train, has pump drive unit connected with drive device via freewheel device or with another drive device via another freewheel device

The arrangement has a pump drive unit (70), which is driven by a drive device or another drive device. The pump drive unit is connected with the former drive device via a freewheel device or with the latter drive device via another freewheel device. The free-wheel devices are operated relative to a coupling unit in opposite rotary directions. The former free-wheel device is blocked if the former drive device rotates faster than the coupling unit. An independent claim is also included for a hybrid vehicle drive train with an electrical machine.

Pump

High pressure pump

Gerotor-type pump

Gerotor-type pump

The pump has an inner rotor bounded by an outer peripheral shape (20) which is generated by moving a first circle around a first trochoid. The inner rotor is mounted for rotation about a first axis. The pump also has an outer rotor mounted for rotation about a second axis which is off-set from the first axis. The outer rotor is bounded by an inner peripheral shape (22) which is generated by moving a second circle around a second trochoid. ...

Improvements in or relating to rotary piston internal combustion engines

... 1,024,874. Rotary-piston internal combustion engines. BIRMINGHAM SMALL ARMS CO. Ltd. Oct. 2, 1964 [Oct. 4, 1963], No. 39100/63. Heading F1F. A rotary-piston internal combustion engine comprising a piston or rotor which rotates within and rolls around the inner profile of a suitably shaped stator wherein the rotor is formed with a longitudinal bore having a profile co-operable with a suitably shaped stationary shaft to provide an epitrochoidal or hypotrochoidal rotary system of the n and n+1 lobe type. As shown in Fig. 2, an engine stator 1 provided with an air-fuel mixture admission port 3, an exhaust port 4 and a spark-plug recess 5 is flanked by pump stators 8, 9, Fig. 2, each having an inlet port 10 and a discharge port 11 which are in turn flanked by side-plates 12, 13 supporting a stationary shaft 16 of substantially triangular cross-section which passes through the three stators. The shaft 16 cooperates with a four-lobed bore 15 in each of the rotors so that the rotors rotate with ...

PROCEDURE FOR MAINTAINING A CONSTANT OF INITIAL VALUE OF A FEED PUMP, E.G. YOUR FÖRDERVOLUMENS, WHICH ARE PROPELLED OF OF A IN OF ITS NUMBER OF REVOLUTIONS VARIABLE DRIVE DEVICE, AS WELL AS DEVICE FOR THE EXECUTION OF THE PROCEDURE

IN A COMBUSTION ENGINE PUMP INTEGRATED

ROTATION POSITIVE-DISPLACEMENT PUMP WITH LIMITED RADIAL SPACE REQUIREMENT

AXIALVERSTELLVORRICHTUNG

An axial setting device for actuating a multi-plate coupling ( 2 ) in the driveline of a motor vehicle, comprising a housing ( 3 ), a cylinder unit ( 15 ) and a hydraulic system. In the housing ( 3 ), two parts ( 4, 5 ) are supported so as to be coaxially rotatable relative to one another and can be coupled to one another by a set of coupling plates ( 10 ) which are axially arranged between a supporting disc ( 9 ) and a pressure disc ( 11 ). The cylinder unit ( 15 ) comprises a hydraulic chamber ( 22 ) and a piston ( 21 ) axially displaceably arranged therein for actuating the multi-plate coupling ( 10 ) via the pressure disc ( 11 ). The hydraulic system for actuating the piston ( 21 ) comprises a quantity of oil jointly contained in the housing ( 3 ) and in the hydraulic chamber ( 22 ), as well as a pump ( 18 ) which has a first connection ( 23 ) connected to the housing ( 3 ) and a second connection ( 24 ) connected to the hydraulic chamber ( 22 ).

Apparatus for measuring fluid flow operations coolable

Die Erfindung betrifft eine Vorrichtung zur Messung von Durchflussvorgängen von Fluiden mit einem Einlass (10), einem Auslass (12), einem Strömungsgehäuse (38), in dem das Fluid strömt, einem antreibbaren Verdrängerzähler (16), der im Strömungsgehäuse (38) angeordnet ist, einer Umgehungsleitung (20), über die der Verdrängerzähler (16) umgehbar ist, einem Druckdifferenzaufnehmer (22), der in der Umgehungsleitung (20) angeordnet ist und im Strömungsgehäuse (38) angeordnet ist und einer Auswerte- und Steuereinheit (32), über die der antreibbare Verdrängerzähler (16) in Abhängigkeit der am Druckdifferenzaufnehmer (22) anliegenden Druckdifferenz regelbar ist. Um deren korrekten Betrieb auch bei Verwendung für Messfluide mit Temperaturen von bis zu 200°C sicher zu stellen, wird erfindungsgemäß vorgeschlagen, dass im Strömungsgehäuse (38) ein von Kühlmittel durchströmbarer Kühlkanal (50) ausgebildet ist.

ZAHNRINGMASCHINENKONZEPT

Die Erfindung betrifft ein Zahnringmaschinenkonzept wobei das Drehzahlverhältnis von Außenring (1) zu Innenrotor (2) zwei zu drei beträgt wodurch das Maximum des technisch möglichen, spezifischen Fördervolumens erreicht wird. Die am Umfang der Maschine angeordneten Ein- bzw. Austrittsöffnungen (4) garantieren ein konstantes Fördervolumen unabhängig von der Breite der Maschine.

OIL PUMP OF VARIABLE ACHIEVEMENT.

INTERIOR GEAR PUMP.

SICKLE LOTS INTERIOR GEAR PUMP ALSO INTO THE ZAHNKÖPFE ASSIGNED SEALING ELEMENTS

INTERIOR GEAR WHEEL MACHINE FOR REVERSING ENTERPRISE IN THE CLOSED HYDRAULIC CYCLE

INTERIOR GEAR PUMP GEROTORBAUART

Enhancement of surface-active solid-phase heterogeneous catalysts

Rotary drivehead for downhole apparatus

Operable implant comprising an electrical motor and a gear system

An operable implant adapted to be implanted in the body of a patient. The operable implant comprising an operation device and a body engaging portion, the operation device comprises an electrical motor comprising a static part comprising a plurality of coils and a movable part comprising a plurality of magnets, such that sequential energizing of said coils magnetically propels the magnets and thus propels the movable part. The operation device further comprises an enclosure adapted to hermetically enclose the coils of the static part, such that a seal is created between the static part and the propelled moving part with the included magnets, such that the coils of the static part are sealed from the bodily fluids, when implanted.

Electric pump for a hybrid vehicle

A hydraulic system for a hybrid module which is located between an engine and a transmission includes a parallel arrangement of a mechanical pump and an electric pump. Each pump is constructed and arranged to deliver oil to other portions of the hydraulic system depending on the operational mode. Three operational modes are described including an electric mode, a transition mode, and a cruise mode. Various monitoring and control features are incorporated into the hydraulic system.

INVERSE TOOTHED ROTOR SET

MAGNETICALLY ENGAGED PUMP

A magnetically engaged pump includes a pump housing (10) with a rotatable magnetic drive assembly (28), a cylindrical canister (52) and a rotatable driven magnet assembly (34). This magnetic coupling is associated with a pump rotor (58) and a laterally positioned gear wheel (64) to define a gear pump. This magnetic coupling is alternatively associated with a pump rotor (58) with an impeller (118) to define a centrifugal pump. Either pump includes a stationary shaft (40) to mount the driven magnet assembly (34) and pump rotor (58). A rotatable carrier (68) with bushings (80, 82) and thrust bushings (88. 90) coaxially supports the rotatable driven magnet assembly (34) and pump rotor (58).

Stufenlos regelbares hydraulisches Getriebe.

Als Motor oder Pumpe wirkende hydraulische Zahnradmaschine.

Drehkolbenmaschine

Drehkolbenmaschine mit exzentrisch ineinander angeordneten, miteinander im Eingriff befindlichen Drehkolben

Nach dem Verdrängerprinzip als Pumpe oder Flüssigkeitsmotor arbeitende hydraulische Maschine

Flüssigkeitspumpe, insbesondere Heizölpumpe

Flüssigkeitsfördereinrichtung, insbesondere für Ölbrenner

Pumpeneinheit für Ölbrenner

HYDRAULIC PUMP DEVICE WITH VARIABLE SPEED AND METHOD OF ITS MANUFACTURE

STRENGTHENING THE SURFACE-ACTIVE SOLID-PHASE HETEROGENEOUS CATALYSTS

Oil pump

Method for circuit separation testing in a double gearwheel pump

The invention relates to a method for circuit separation testing in a double gearwheel pump (1) having two gearwheel pumps (2, 2') which have a common pump shaft (3) and which are provided preferably as hydraulic pumps of a hydraulic vehicle brake system with slip control. The invention proposes that one of the two gearwheel pumps (2, 2') be charged with pressure, and that the pressure build-up in said gearwheel pump (2, 2') and/or any pressure build-up in the other gearwheel pump (2, 2') be measured. The pressure build-up is preferably realized by means of the gearwheel pump (2, 2') itself. Any leak at the leadthrough of the pump shaft (3) through a partition wall (14) between the two gearwheel pumps (2, 2') can be detected by means of the method.

Displacement machine to planetary motion.

Improvements with the rotary pumps or similar machines

Pump unit for [...]

GROUP ELECTRIC POMP, STANDARD INCLUDING/UNDERSTANDING AT LEAST A HYDRAULIC PUMP, IN PARTICULAR HAS GEARS, ENTRAINEE IN ROTATION BY A DRIVING DEVICE

L'invention concerne un groupe électro-pompe, du type comprenant au moins une pompe hydraulique, notamment à engrenage, entraîné en rotation par un moteur électrique. Le groupe est caractérisé en ce qu'il comprend deux pompes hydrauliques (8, 9) et deux moteurs électriques (1, 2) qui sont agencés de façon à ce que la puissance du groupe puisse être obtenue par additionnement des puissances des moteurs. L'invention est utilisable avantageusement dans des véhicules automobiles.

GEROTOR PUMP HAVING DUAL-SHAFT DRIVING STRUCTURE FOR ROTATING TWO PAIRS OF ROTORS IN SAME DIRECTION

The present invention relates to a gerotor pump having a dual-shaft driving structure for rotating two pairs of rotors in the same direction, comprising: a pump housing formed to introduce and discharge a fluid; two pairs of rotor modules including an outer rotor arranged inside the pump housing and an inner rotor adjacent to the same; a separation plate arranged inside the pump housing for separating the two pairs of rotor modules; and a dual pump shaft having a dual-shaft structure for rotating each inner rotor in the same direction, connected to the inner rotor of the two pairs of rotor modules for transferring rotational power. The gerotor pump having a dual-shaft driving structure for rotating two pairs of rotors in the same direction has the size of pump more compact in total, selects the adequate pumping pressure as necessary to minimize the energy loss, thereby increasing the efficiency of a pump. COPYRIGHT KIPO 2018 ...

SUBMERSIBLE PUMPING APPARATUS WITH INTEGRATED FILTER AND SEALED CIRCUITRY

OIL PUMP WITH HALF-MAGNET TYPE BLDC MOTOR

The present invention relates to an oil pump for transferring fluid by power of an N-pole motor, comprising: a BLDC motor (10) having magnets (15), wherein the number of magnets is less than N; a pump (20) coupled to a shaft of the BLDC motor (10); and a controller (30) accommodated in a space separated on an identical housing (31) as the BLDC motor (10). Accordingly, by mounting a half-magnet type BLDC motor on a fuel supply pump of a vehicle, weakening of durability due to vibration is prevented while maintaining system stability for a long period of time. COPYRIGHT KIPO 2017 ...

유압 차량 브레이크 시스템용 내접 기어 펌프

... 본 발명은 슬립 제어식 유압 차량 브레이크 시스템용 내접 기어 펌프(1)에 관한 것이다. 본 발명에 따라, 내접 기어 펌프(1)의 분리 부품(7)은 내부 부분(12)과 상기 내부 부분(12)의 단부를 유격을 가지고 둘러싸는 외부 부분(13)을 포함한다. 이로 인해, 내부 부분(12)과 외부 부분(13)은 방사 방향으로 이동 가능하게 서로 연결되고, 사전 장착된 어셈블리로서 내접 기어 펌프(1) 내에 설치될 수 있다.

일체형 변위 제어식 펌프

... 펌프 시스템은 모터, 펌프 및 상기 모터로부터 상기 펌프 내로 연장되는 단일의 샤프트를 구비하며, 상기 단일의 샤프트는 모터 출력 샤프트 및 펌프 입력 샤프트 양자로서 동시에 작동하도록 구성된다. 상기 단일의 샤프트의 제1 단부는 상기 모터와 상호작용하고, 상기 단일의 샤프트의 제2 단부는 상기 펌프와 상호작용하여, 상기 샤프트가 상기 모터 출력 샤프트 및 상기 펌프 입력 샤프트로서 작동하도록 구성된다. 또한, 상기 펌프 시스템은 상기 모터와 상기 펌프를 지지하도록 구성된 장착 부속품을 더 구비할 수 있다. 상기 모터는 전기 모터일 수 있고, 상기 펌프는 유압 펌프일 수 있다. 상기 전기 모터를 제어하는 커맨드를 발생하도록 구동 제어기가 구성됨으로써, 유압 유체의 소정의 흐름을 성취하도록 상기 펌프를 구동한다.

METHOD OF DESIGNING TOOTH PROFILE FOR INTERNAL GEAR TYPE PUMP, CAPABLE OF INCREASING A DISCHARGE AMOUNT OF THE PUMP HAVING THE SAME SIZE

PURPOSE: A method of designing a tooth profile for an internal gear type pump is provided to increase durability and efficiency of the pump by maximizing a flow rate of a small-sized pump. CONSTITUTION: A method of designing a tooth profile for an internal gear type pump includes the steps of forming an outer gear having the number of teeth larger than that of an inner gear, rotating and moving a basic circle(A1) in contact with a rolling circle(B1) spaced apart by an eccentric distance(e1), connecting points of the rolling circle to form a trochoid curve(D1), and forming a trochoid tooth profile by rotating and moving a center of a trajectory circle along the trochoid curve. A trajectory oval(C1) having a long axis(a) and a short axis(b) is applied to the trochoid curve to increase the eccentric distance(e1)=e+(a-b)/4 to increase the discharge amount, wherein e is a conventional eccentric distance. © KIPO 2006 ...

[...] apparatus for a motor cycle [...] near-isothermal

PUMP UNIT FOR FEEDING FUEL, PREFERABLY DIESEL FUEL, TO AN INTERNAL COMBUSTION ENGINE

A pump unit is provided with: a drive shaft (4) which is mounted such that it can rotate in a pump body (3) in order to operate both a piston pump which can feed a fuel, preferably diesel fuel, to an internal combustion engine, and a gear pump (2) which can feed the fuel to the piston pump; an annular gasket (7) arranged between the pump body (3) and the drive shaft (4) for separating, in a fluid-tight manner, two chambers (8, 9) to which the fuel is fed; and a reinforcing element (26) which is mounted inside one of the chambers (8, 9) in order to at least limit the deformation of the gasket (7) resulting from the pressure of the fuel.

INNER ROTOR FOR INTERNAL GEAR PUMP

... [PROBLEMS] Local stress concentration caused by rotational moment transmitted from a crankshaft is eased. [MEANS FOR SOLVING PROBLEMS] A crankshaft (6) and an installation hole (5) have a substantially hexagonal cross-sectional shape having six corners (13, 23), and the cross-sectional shape of the installation hole (5) is formed by connecting adjacent corners (23, 23) by connection sections (22) that each project inward in a large circular arc shape. By this construction, the tips of the corner (13) of the crankshaft (6) do not come into contact with the inner surface of the installation hole (5), and rotational force of the crankshaft (6) is transmitted to the installation hole (5) with connection sections (12) of the crankshaft (6) and the large circular arc-shaped connection sections (22) of the installation hole (5) in line contact with each other. As a result, a local stress value occurring at the installation hole (5) can be reduced.

PUMP COMPRISING AN ELECTRIC MOTOR

Disclosed is a pump (5) that has an electric motor (4) and is used to deliver a fluid, in particular in a motor vehicle. Said pump comprises at least one impeller (18) that has delivering elements (19) and can rotate about an axis of rotation (27), a working chamber on the at least one impeller (18), an electric motor (4) including a stator (13) and a rotor (16), a housing (8) that has an intake port (29) for feeding the fluid to be delivered into the working chamber (47) and a pressure port (30) for discharging the fluid to be delivered from the working chamber. The at least one impeller (18) including the delivering elements (19) as well as the electric motor (4) are arranged inside the housing (8), and the stator (13) is at least partly, in particular entirely, sealed by a sealing sleeve which forms a plain bearing unit for the at least one impeller (18), at least one impeller (18) being mounted on the plain bearing unit of the sealing sleeve. The stator (13) has one or more openings ...

GEAR PUMP

The invention relates to a gear pump, for example for oil or fuel, in particular a pre-feed pump for a diesel engine. The inventive pump comprises first and second gears, the first gear is embodied in the form of a pinion and the second gear in the form of an internal geared wheel. Said pinion is mounted eccentrically with respect to the internal geared wheel.

Oil pump for controlling planetary system torque

This invention provides the use of a pump to regulate torque in a planetary gear system. The pump is provided with a moveable piston as an end plate. An actuator, attached to the piston, controls the movement of the piston. In one position, the piston is in contact with the internal components of the pump. When the actuator moves the piston, the piston loses contact with the pump, thus allowing a free flow of fluid between the inlet and outlet of the pump. In this configuration, the pump is no longer able to generate the pressure that creates torque in the planetary gear system.

Adapter, to interface counter-rotating torque producing engine mechanisms with stationary support accessories, for torque free output and torque sensitive environments

The present invention is a novel hydraulic/electric, rotating interface for torque producing engines, including internal combustion engines, which enables a rigidly mounted motor to isolate the power/torque producing components from other stationary accessories, to provide advantageous crankshaft/block counter-rotational output, suitable for torque free power applications, torque free propulsion and torque sensitive environments.

INTERNAL GEAR PUMP

The internal gear pump includes: an inner rotor; an outer rotor that rotates by having predetermined eccentricity to a rotation center of the inner rotor; an outer ring that holds the outer rotor in a freely rotatable state, and is also formed with at least three cam protruded parts; a pump housing having a rotor chamber; protruded-wall surface parts that are formed on an inner periphery side surface of the rotor chamber and are also formed in the same number as that of the cam protruded parts; and operation means for oscillating the outer ring. A diameter center of the holding-inner peripheral part of the outer ring is moved by the operation means along a locus of a circle of which a radius is the eccentricity to the rotation center of the inner rotor.

Oil pump structure of transmission

In an oil pump structure of an automatic transmission using a torque converter, a hydraulic pressure chamber is defined by a pump housing and a pump cover, to rotatably accommodate therein inner and outer rotors. First and second inflow ports respectively communicating with an oil strainer and a control valve are formed in the outside surface of the pump cover separately from each other. First and second oil inflow passages communicating with the respective inflow ports, a merged-flow portion that downstream portions of the first and second oil inflow passages are merged with each other, a downstream-side oil distribution channel intercommunicating a downstream side of the merged-flow portion and the hydraulic pressure chamber, are formed in at least one of the pump housing and the pump cover.

Inner Rotor And Outer Rotor Of Internal Gear Pump

An inner rotor having excellent corrosion resistance, which has an outer gear serving as a component of an internal gear pump, and an outer rotor having excellent corrosion resistance, which has an inner gear engaging with the outer gear. The inner rotor and outer rotor of are made of Cu-Ni-based sintered copper alloy that contains 12 to 50% by mass of Ni, 5 to 20% by mass of Sn, 0.5 to 5% by mass of C, and if necessary, further contains 5 to 20% by mass of Zn, 0.1 to 0.9% by mass of P, and a balance being Cu and inevitable impurities.

HYDRAULIC DEVICE

A hydraulic device (1) comprising a housing (2) and a gerotor (3) contained within the housing (2), the gerotor (3) having an inner rotor (4) eccentrically disposed within an outer ring (5), the outer ring having a central axis (19), the outer ring (5) being fixed to the housing, the inner rotor (4) having external lobes (4a) extending radially outwardly engaging the outer ring (5) having internal lobes (5a) extending radially inwardly, the inner rotor (4) being arranged for orbital and rotational movement relative the outer ring (5), wherein the orbital and rotational movement will define a plurality of expanding and contracting volume pressure chambers (7) between the inner rotor (4) and the outer ring (5). The hydraulic device (1) comprises a fluid feeder tube (8) with a central axis (19), the fluid feeder tube (8) is provided with at least one fluid inlet line (8a, 8c) and at least one fluid outlet line (8b, 8d), the inner rotor (4) is adapted to slide against a drive shaft cylinder ...

Diverter Valve For Progressing Cavity Pump

A diverter valve housing is secured to an upper end of a pump. A shuttle in the diverter valve housing moves between an upper closed position and a lower open position. A floating ring has an exterior band that abuts an upper end of the shuttle to move the shuttle downward. The floating ring moves upward when the pump operates. A bushing abuts an upward facing shoulder in the floating ring and is adhered within the bushing by a layer of adhesive. The shuttle has upper and lower seals separated by upper and lower spacer rings. A stop ring between the spacer rings limits downward movement of the upper spacer ring and also limits upward movement of the lower spacer ring. 1. A well pumping apparatus , comprising:a pump having a rotatable drive member;a diverter valve housing secured to an upper end of the pump, the diverter valve housing having a sidewall containing at least one outlet port;a shuttle reciprocally carried in the diverter valve housing, the shuttle having an upper closed position blocking flow through the outlet port and a lower open position allowing flow through the outlet port;a spring in the diverter valve housing that urges the shuttle to the upper position;a flow tube secured to and extending upward from the diverter valve housing, the flow tube having a longitudinal axis and an upper end adapted to be secured to a string of production tubing;a connector rod secured to and extending upward from the drive member through the spring and the shuttle, the connector rod having an upper end with a rod coupling for connecting to a string of drive rods to rotate the drive member;a floating ring having a bore that receives the connector rod, the floating ring having an exterior band that abuts an upper end of the shuttle to move the shuttle downward toward the open position while the pump is shut off, the floating ring being upwardly movable in the flow tube relative to the shuttle in response to well fluid flowing upward from the pump while the pump is ...

GEAR PUMP AND METHOD FOR REALISING IT

A gear pump comprising:—a pair of gears (2) able to interact with a fluid crossing the pump (1);—a housing seating (3) of said pair of gears (2), said housing seating (3) comprising a rest plane (30) of a shim (4);—a delivery conduit (6) which develops from said housing seating (3) and comprising an inlet mouth (60). The inlet mouth (60) of the delivery conduit (6) is at a distance from an intersection (7) between a rest plane (30) of the shim (4) and remaining parts of the housing seating (3).

VARIABLE CAPACITY FLUIDIC MACHINE

An internal gear fluidic machine, in particular a pump for the lubrication circuit of a motor vehicle engine, comprises an operating part including an external gear (2) and an internal gear (4), which is housed within an axial cavity (25) of the external gear (2) and meshes with the latter. The external gear (2) is associated with a translating mechanism (8, 22), arranged to cause an axial sliding thereof relative to the internal gear (4) in order to vary the capacity and the fluid flow rate of the machine. The translating mechanism (8, 22) defines a first capacity, adjustment space (24) in communication with a high pressure chamber (48) of the machine, and a second capacity adjustment space (15) where pressure conditions exist that are dependent on the operating conditions of an element, different from the high pressure chamber (48), of a fluidic circuit in which the machine (1) is connected. The translating mechanism (8, 22) causes the sliding of the external gear (2) in response to the ...

Gerotor pump for a vehicle

A gerotor pump is provided with a pump housing defining a chamber and having an inlet and an outlet separated by a planar surface. The planar surface defines a notch connected to the outlet. An inner gear member is rotatably and eccentrically supported within an outer gear member. The inner gear member defines a series of external teeth with a first tooth defining a fluid passage therethrough and a second tooth independent of fluid passages. The fluid passage is defined by an aperture extending axially through the first tooth fluidly connected to a channel extending across the first tooth on an end face of the inner gear member. The passage and the notch cooperate to form a fluid pathway for pressure relief and reduced tonal noise in the pump by disrupting harmonics during operation.

SUBMERSIBLE PUMP ASSEMBLY

A pump assembly includes an electric motor and different selectable pump covers, and is suitable for mounting within a transmission fluid reservoir for transferring automatic transmission fluid. The pump assembly includes a stator housing having a cylindrical cavity for receiving ATF contained in the transmission fluid reservoir. A rotor is rotatably coupled within the cylindrical cavity and has a plurality of magnets arranged about a rotational axis thereof. A flux collector is coupled with the stator housing adjacent to the cylindrical cavity for transferring magnetic flux from one of the plurality of magnets from a first portion to a second portion thereof. A hall sensor is disposed proximate the second portion for sensing magnetic flux in the flux collector, such that the magnetic flux is used to determine a rotated position of the rotor.

INTEGRATED DISPLACEMENT CONTROLLED PUMP

A pump system includes a motor, a pump, and a single shaft extending from the motor into the pump, the single shaft being configured to operate simultaneously as both a motor output shaft and a pump input shaft. A first end of the single shaft interacts with the motor, and a second end of the single shaft interacts with the pump, to configure the shaft to operate as the motor output shaft and the pump input shaft. The pump system further may include a mounting accessory configured to support the motor and the pump. The motor may be an electric motor, and the pump may be a hydraulic pump. A drive controller is configured to generate commands for controlling the electric motor, which in turn drives the pump to achieve a desired flow of hydraulic fluid.

Positive-displacement rotary pump having a positive-displacement auxiliary pumping system

Positive-displacement auxiliary pumping systems for use in pump apparatus of different configurations are disclosed. The positive-displacement auxiliary pumping systems are included in positive-displacement rotary pumps having a casing defining a pumping cavity, an inlet port connected to the pumping cavity, a discharge port connected to the pumping cavity, and a positive-displacement auxiliary pumping port connected to the pumping cavity. Pumping elements move within the pumping cavity of the casing and define a collapsing pocket that maintains fluid communication with the positive-displacement auxiliary pumping port after the collapsing pocket is no longer in fluid communication with the discharge port.

Compressor having oil guide path

A compressor includes: a driving unit including a stator, a rotor, and a rotary shaft provided in the rotor, having an oil guide path formed at an inner side in a radius direction; a compression unit coupled to the rotary shaft, having a cylinder and a piston reciprocating in the cylinder by a driving force of the driving unit; and an oil supply unit coupled to a lower end of the rotary shaft, supplying oil toward the compression unit. The oil supply unit includes a rotary portion for supplying oil toward the oil guide path while being rotated together with the rotary shaft and a fixed portion having an inner space partitioned to accommodate at least a portion of the rotary portion, and the oil guide path is formed to pass through the rotary shaft along a length direction.

GROOVE/KEY CONNECTING APPARATUS FOR CONNECTING OUTER GEAR AND JOINT SHAFT OF INTERNAL CONTACT GEAR TYPE ROTARY PISTON MACHINE AND PRODUCTION THEREOF

SHAFT SEALING DEVICE, PUMP DEVICE AND BRAKE HYDRAULIC PRESSURE CONTROL DEVICE USING THE SAME

PROBLEM TO BE SOLVED: To prevent axial displacement of a sealing member of a shaft sealing device by using a force which is generated as the sealing member is dragged by a rotatable member and rotates relative to a non-rotatable member. SOLUTION: A shaft sealing device is provided, including: a first member 1 and a second member 2 rotating relative to each other; a sealing member 3 sealing a gap between an inner peripheral surface of a through hole 2a and an outer peripheral surface of the first member 1; a rotation restricting part 4 restricting relative rotation between the second member 2 and the sealing member 3; and an axial displacement restricting part 5 for the sealing member 3. The rotation restricting part 4 includes a first contact portion provided 4a on the second member 2, a second contact portion provided on the sealing member 3, and an inclined surface 4c. The first contact portion 4a and the second contact portion 4b are brought into contact with each other on the inclined ...

ШЕСТЕРЕНЧАТЫЙ НАСОС И ГИДРАВЛИЧЕСКИЙ ШЕСТЕРЕНЧАТЫЙ МОТОР

Группа изобретений относится к шестеренчатым насосам и к гидравлическим шестеренчатым моторам. Шестеренчатый насос (100) содержит ведущее зубчатое колесо (1), ведомое зубчатое колесо (2), передний фланец (6), от которого выступает вперед выступающий участок (13) вала, связанный с валом (10) колеса (1), заднюю крышку (7), прикрепленную к корпусу (3), и промежуточный фланец (8), расположенный между корпусом (3) и фланцем (6). Фланец (8) содержит первую камеру (80) и вторую камеру (81), соединенную посредством соединительного канала (82) с каналом впуска или выпуска текучей среды, компенсационное кольцо (9), установленное в камере (80) и введенное на участке вала (10) колеса (1) таким образом, чтобы компенсировать осевые усилия колеса (1) и передавать движение на вал (10) колеса (1), и поршень (88), установленный в камере (81) для остановки напротив одного конца вала (20) колеса (2) таким образом, чтобы компенсировать осевые усилия, приложенные к колесу (2). Группа изобретений направлена на ...

СПОСОБ ЭКСПЛУАТАЦИИ ШЕСТЕРЕННОГО НАСОСА И ШЕСТЕРЕННЫЙ НАСОС

Группа изобретений относится к способу эксплуатации шестеренного насоса и шестеренному насосу. Способ заключается в том, что посредством зубчатых колес (11) нагнетаемую жидкость, выходящую из по меньшей мере одного впуска корпуса (3), нагнетают в направлении по меньшей мере одного выпуска корпуса (3). Колеса (11) посредством установочного устройства (21) в зависимости от условий давления внутри корпуса (3), включающих в себя по меньшей мере противодавление жидкости на выпуске, поворачивают относительно друг друга и/или смещают относительно друг друга. Если противодавление жидкости на выпуске является меньше по меньшей мере одного заданного минимального значения, колеса (11) смещают посредством устройства (21) в исходное положение. После этого, если противодавление жидкости на выпуске не является ниже указанного по меньшей мере одного минимального значения, расположенные в исходном положении колеса (11) посредством устройства (21) поворачивают относительно друг друга и/или смещают относительно ...

РОТАЦИОННОЕ РОТОРНО-ПОРШНЕВОЕ УСТРОЙСТВО

Изобретение относится к двигателестроению. Ротационное роторно-поршневое устройство содержит вал (1) отбора мощности, роторно-поршневые модули-движители (2), в циклически переменных рабочих объёмах (7) которых осуществляются термодинамические циклы двигателя внутреннего сгорания и систему циклической генерации рабочего тела. Роторно-поршневые модули-движители (2) фиксированно соединены с валом (1) отбора мощности посредством консолей (3) по схеме вал – консоль - корпус статора (4) таким образом, что в процессе рабочего цикла линия действия результирующих сил давления рабочего тела на рабочую поверхность статора (4) и рабочую внешнюю поверхность (6) ротора (8), ограничивающие рабочий объём роторно-поршневого модуля-движителя (2), перпендикулярна линии оси вала (1) отбора мощности. Также раскрыты пространственное расположение линии действия, области действия, точки приложения действия, а также радиуса и величины действия результирующих сил давления и движущей силы вращения. Технический результат ...

СКВАЖИННЫЙ МНОГОСТУПЕНЧАТЫЙ ТРОХОИДНЫЙ НАСОС

Изобретение относится к скважинным многоступенчатым трохоидным насосам для откачки пластовой жидкости из скважин. Насос состоит из двух и более трохоидных ступеней 1, включающих в себя статор 2 и внутренний и внешний роторы 3 и 4, установленные с внутренним зацеплением и возможностью взаимного вращения. Роторы 3 установлены на валу 6 с фиксацией в окружном направлении и без фиксации в осевом направлении. Роторы 4 установлены с эксцентриситетом в статорах 2 в осевом подшипнике скольжения 5. В смежных ступенях 1 роторы 4 смещены в окружном направлении на угол, равный 180°. Вал 6 установлен в подшипниковые опоры 8. Ступени 1 разделены направляющим аппаратом 9, в котором выполнено одно сквозное отверстие 10 и два глухих отверстия 15 и 16, разделенных перегородкой. Отверстие 10 соединяет выход ниже установленной ступени 1 с входом выше установленной ступени 1. В статоре 2 ступени 1 выполнены два байпасных канала, один из которых соединяет выход 11 ступени 1 с отверстием 15 ниже установленного ...

ТРОХОИДАЛЬНОЕ РОТОРНОЕ УСТРОЙСТВО

РОТОРНАЯ ВИНТОВАЯ МАШИНА ОБЪЕМНОГО ТИПА И СПОСОБ ПРЕОБРАЗОВАНИЯ ДВИЖЕНИЯ В ОБЪЕМНОЙ ВИНТОВОЙ МАШИНЕ

... 1. Роторная винтовая машина объемного типа, содержащая корпус (30), имеющий основную ось Х, два элемента, состоящие из охватываемого элемента (10; 110; 500; 600; 700) и охватывающего элемента (20; 120; 600; 700; 800), окружающего охватываемый элемент, в которой наружная поверхность охватываемого элемента (10; 110; 500; 600; 700) определяет охватываемую поверхность (12; 112), а внутренняя поверхность охватывающего элемента определяет охватывающую поверхность (22; 122), при этом охватываемая (12;112) и охватывающая (22; 122) поверхности представляют собой спиральные поверхности, имеющие соответствующие оси Хm и Хf, которые параллельны и отстоят друг от друга на длину Е, причем охватываемая (12; 112) и охватывающая (22; 122) поверхности образуют, по меньшей мере, одну рабочую камеру (11) посредством формирования линейных контактов (А1, А2, А3) охватываемой (12; 112) и охватывающей (22; 122) поверхностей и относительного перемещения охватываемого (10; 110; 500; 600; 700) и охватывающего (20 ...

Hydraulischer Motor

Delivery device as toothed wheel pump in drive train of combustion engines has pressure absorber plate between pressure chamber and housing and decoupled from latter through spacer element

The delivery device has a housing (1) with delivery chamber containing compressor unit. Between the pressure chamber (10) and housing is a pressure absorber plate which is decoupled from the housing through at least one spacer element which is mounted between the plate and housing. The pressure absorber plate is housed at least in part in a recess in the housing. The spacer element is made from metal, sintered material, plastics or ceramic.

Hydraulische Maschine

Förderaggregat

Förderaggregat, insbesondere Innenzahnradpumpe mit einem Innenzahnrad (12) und einem stationär aufgenommenen Hohlrad (14), wobei das Innenzahnrad (12)ufweist. Diese sind durch Täler (36) voneinander getrennt, wobei das stationär angeordnete Hohlrad (14) eine Innenverzahnung mit Kuppen (R₂) umfasst. Das Innenzahnrad (12) rotiert in einem Drehsinn (20) relativ zum stationären Hohlrad (18) und kämmt mit diesem. In den Tälern (36) zwischen den Kuppen (R₁) des Innenzahnrades (12) ist mindestens eine Vertiefung (40) vorgesehen. Im Talgrund (38) der Täler (36) zwischen den Kuppen (R₁) des Innenzahnrades (12) ist eine Anzahl von sich durchgängig axial streckenden Längsnuten (40) ausgeführt.

Pumpeneinheit fuer OElbrenner

Ölpumpe aus Aluminiumlegierungen

KOMPAKTGEROTORPUMPE

Anordnung zum Bestimmen eines Drucks

Eine Anordnung (100) zum Bestimmen eines durch eine mittels eines Elektromotors (31) angetriebene Pumpe (30) erzeugten Drucks (64) ist dazu eingerichtet, den Druck (64) auf Grundlage einer Differenz aus einem inneren Drehmoment (114) und einem Verlustmoment (108) zu ermitteln, wobei die Anordnung (100) weiterhin dazu eingerichtet ist, das innere Drehmoment (114) aus einem Motorstrom (110) und einer Motorkonstante (ke) zu ermitteln.

INNENZAHNRADPUMPE.

Fluidmaschine, insbesondere Hydromaschine

Fluidmaschine (1; 1a; 1b; 1c), insbesondere Hydromaschine, die mindestens eine Arbeitskammer (14; 14a; 14b; 14c) umfasst, wobei ein Rotor (3; 3a; 3b) durch ein Drehmoment oder durch ein Fluid, das zum Betrieb der Maschine auf einer Einlassseite in die mindestens eine Arbeitskammer (14; 14a; 14b; 14c) hinein- und auf einer Auslassseite aus der mindestens einen Arbeitskammer herausströmt, drehbar ist, dadurch gekennzeichnet, dass eine Drehung des Rotors (3; 3a; 3b) eine Steuerung mindestens eines Ventils (9, 10; 9a, 10a; 9b, 10b; 48) bewirkt.

OIL PUMP

Driveshaft with transfer pump adapter

Rotary engine fluid pump and method of pumping a fluid

Embodiments of the invention provide a rotary engine, the rotary engine comprising: a housing defining a working chamber of the engine; a rotor arranged to rotate within the working chamber, the rotor having a radially inner portion and a radially outer working surface, the radially inner portion comprising a pump portion, the pump portion being operable to pump a fluid through the radially inner portion as the rotor is rotated; and a fill member, the fill member being arranged to create a region of increased fluid pressure within a radially inner portion of the rotor as the rotor rotates thereby to pump fluid through the rotor.

Скважинный винтовой насос

Полезная модель относится к области нефтяной промышленности и может быть использована при создании скважинных насосов для добычи нефти в осложненных условиях, в том числе для добычи высоковязкой нефти. Сущность: скважинный винтовой насос содержит корпус с входным и выходным каналами, секционную обойму с винтообразными каналами и винтообразный ротор, эксцентрично размещенный в обойме, с возможностью радиального смещения обоймы относительно ротора, размещенного на опорах, секции обоймы установлены последовательно с возможностью углового смещения их относительно друг друга, и каждая секция обоймы выполнена по форме спиральной пружины, концентрично размещенной в расточке корпуса, с возможностью образования внутри корпуса следующих друг за другом спиралевидных камер, отделенных друг от друга щелевыми уплотнениями, при этом каждая секция обоймы оснащена стопорным элементом, выполненным на роторе, и цилиндрическим промежуточным стержнем, размещенным вдоль ротора в разгрузочной канавке, выполненной в роторе, с возможностью радиального смещения промежуточного стержня относительно ротора, при этом длина разгрузочной канавки превышает длину промежуточного стержня, причем на нижнем конце корпуса установлен трубный хвостовик, проточный канал которого сообщается с входным каналом корпуса, а на боковой стенке верхнего конца корпуса перед выходным каналом выполнен радиальный отводной канал с установленным на его входе дистанционно управляемым клапаном с образованием при его открытом положении дополнительного контура циркуляции между выходным каналом корпуса и проточным каналом трубного хвостовика. Полезная модель позволяет расширить диапазон регулирования подачи и мощности за счет обеспечения гибкого регулирования в широком диапазоне гидравлических сопротивлений в области спиралевидных камер и в контуре циркуляции жидкости от входа до выхода насоса. 7 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 179 853 U1 (51) МПК F04C 2/107 (2006.01) F04C 2/344 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ...

Устройство разгрузки винтового погружного насоса

Полезная модель относится к нефтегазодобывающей промышленности, а именно к устройствам и узлам разгрузки погружной насосной установки нефтедобывающего оборудования, воспринимающим повышенные осевые нагрузки, действующие на вал в процессе работы быстроходных механизмов, в частности опор. Устройство разгрузки состоит из приводного вала, на котором последовательно расположены верхний узел торцевых уплотнений, мембранный узел, подшипниковый узел, нижний узел торцевых уплотнений. Нижний конец приводного вала соединен с промежуточным валом, связанным с протектором посредством кулачковой муфты. На приводном валу расположены верхний, средний и нижний ниппели, опертые посредством радиальных подшипников на приводной вал. Подшипниковый узел расположен между средним и нижним ниппелями, мембранный узел расположен между верхним и средним ниппелями. Верхний ниппель с внешней стороны соединен с корпусом мембранного узла, который посредством среднего ниппеля соединен с корпусом подшипникового узла. В среднем ниппеле выполнен продольный канал, в котором установлен узел предохранительных клапанов, соединяющий полость подшипникового узла с полостью, расположенной между мембраной и корпусом и внешней средой. Корпус подшипникового узла соединен с нижним ниппелем, нижняя часть которого присоединена к цилиндрическому корпусу с расположенными в нем нижним узлом торцевых уплотнений и кулачковой муфтой. Технический результат - повышении срока службы устройства. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 197 906 U1 (51) МПК F04C 2/107 (2006.01) F04B 47/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F04C 2/107 (2020.02); F04B 47/00 (2020.02) (21)(22) Заявка: 2020109992, 06.03.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Погудин Александр Михайлович (RU) Дата регистрации: 04.06.2020 Приоритет(ы): (22) Дата подачи заявки: 06.03.2020 (45) Опубликовано: 04.06.2020 Бюл. № 16 1 9 7 9 0 6 R U (54) ...

Enhanced elastomeric stator insert via reinforcing agent distribution and orientation

A progressive cavity type motor or pump including a stator insert with a reinforcing agent dispersed in a manner to improve properties of the stator insert. The reinforcing agent may be a fiber, nanotube, metal, ceramic, or polymer. A dispersing agent may be used to obtain a homogenous distribution. A magnetic reinforcing agent may be incorporated into a stator insert. The stator insert is subjected to a magnetic field to orient the magnetic reinforcing agent in a particular orientation. The magnetic field may also reposition the magnetic reinforcing agent within the stator insert. The stator insert may be formed by injection molding, transfer, or compression molding among other methods.

No-Go Tag Systems and Methods for Progressive Cavity Pumps

A stator for a progressive cavity pump comprises a stator housing having a central axis, a first end, and a second end opposite the first end. In addition, the stator comprises a stator liner disposed within the stator housing. The stator liner has a first end and a second end opposite the first end. The first end of the stator liner is axially spaced from the first end of the stator housing. Further, the stator comprises a tag insert positioned in the stator housing between the first end of the stator housing and the first end of the stator liner. The tag insert has a through passage defining a radially inner surface that includes a tag shoulder.

Downhole Backspin Retarder for Progressive Cavity Pump

A backspin retarder for a progressive cavity pump deploys on the drive string uphole from a pump unit. The backspin retarder has a shaft that connects to portions of the drive string. An impeller disposes on the shaft and can move axially and radially. In an unengaged condition, the impeller and shaft can rotate relative to one another so the drive string can rotate in a drive direction without impediment from the impeller. In an engaged condition, the impeller rotates with the shaft in a backspin direction. In this way, vanes on the impeller can retard the backspin of the shaft and drive string by attempting to force the lifted fluid column flowing downhole past the impeller back uphole. The retarder can use a pin and slot arrangement or an arrangement of engageable teeth to engage the impeller to the rotation of the shaft.

Pump-motor assembly

A pump-motor assembly includes a motor housing, a motor disposed substantially within the motor housing, and a pumping element driven by the motor. A pressurized region is filled with a fluid pressurized by the pumping element, and a fluid passage is in fluid communication with the pressurized region and the motor housing. Fluid flows from the pressurized region to the motor housing and at least partially submerges the motor.

Unified variable displacement oil pump and vacuum pump

A unified variable displacement pump having a housing which includes a fluid pump and a vacuum pump. A portion of the housing is part of the fluid pump, and a portion of the housing is part of the vacuum pump. A shaft extends through the fluid pump and the vacuum pump. A vacuum pump rotor is formed as part of the shaft, and a vane pump rotor is mounted to the shaft such that when the shaft rotates, the vacuum pump rotor and the vane pump rotor rotate, causing the fluid pump to pump fluid and the vacuum pump to generate a vacuum. The vacuum pump and fluid pump are combined into a single component driven by a single shaft.

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

Electric pump unit

A pump body is formed of a pump housing and a pump plate provided in front of the pump housing. A motor housing is fixed to a rear end of the pump housing, and accommodates a pump driving electric motor. A bearing device that supports a motor shaft includes a first bearing that is arranged in a closed-end hole formed in a rear face of the pump plate and supporting a front end portion of the motor shaft, and a second bearing that is arranged radially inward of a cylindrical bearing support portion formed in the pump housing and extending inside the motor housing and that supports a middle portion of the motor shaft. A pump rotor is arranged between the first bearing and the second bearing.

Downhole Motors and Pumps with Improved Stators and Methods of Making and Using Same

In one aspect, the disclosure provides an apparatus for use downhole that in one configuration includes a stator including a housing having an inner contour and a liner lining the inner contour of the stator housing, wherein thickness of the liner is non-equidistant around the inner contour of the housing.

Electric oil pump

A pump housing of a gear pump and a stator of an electric motor are fastened to each other with bolts via a front insulator. Dowel pins are inserted in respective through-holes that are formed in the front insulator at equal intervals in a circumferential direction so as to be located next to insertion holes for the bolts. Respective end portions of each dowel pin are in contact with a bottom face of the pump housing and a pump-side surface of the stator core, and the pump housing and the front insulator are fixed to each other such that a slight gap is formed between the pump housing and the front insulator.

HOT ISOSTATIC PRESSING

A process is provided for producing a component. The process comprising the steps of: producing a former corresponding to the internal dimensions of the component to be formed; providing a layer of a second material on at least one surface of the former; locating the former in a containment and filling the containment with a first material; subjecting the containment to hot isostatic pressing such that the second material diffuses into the first material. 1. A process for producing a component , the process comprising the steps of: producing a former corresponding to the internal dimensions of the component to be formed; providing a layer of a second material on at least one surface of the former; locating the former in a containment and filling the containment with a first material; subjecting the containment to hot isostatic pressing such that the second material diffuses into the first material.2. The process according to claim 1 , wherein the former is removed from the component after the HIP process.3. The process according to claim 1 , wherein the first and/or second materials are metal powders.4. The process according to claim 1 , wherein the second material is a ceramic.5. The process according to claim 1 , wherein the second material includes Boron Nitride and Chromium.6. The process according to claim 1 , wherein the second material may be thermally sprayed claim 1 , plasma sprayed claim 1 , aqueous sprayed or deposited by vapour phase deposition onto the former.7. The process according to claim 1 , wherein the first material is a Nickel alloy such as Sagitite®.8. The process according to claim 1 , wherein the second material includes Nickel and the first material includes aluminium.9. The process according to claim 1 , wherein the second powder diffuses through the top 1000 μm to 2000 μm (i.e. 1-2 mm) of the component.10. The process according to claim 1 , wherein the second powder has a plurality of constituent parts that are applied homogeneously.11. ...

Rotary machine and pump driving apparatus

A rotary machine includes a rotary shaft having two driving reactive force receiving parts that are displaced in an axial direction and are applied with diametrical reactive forces having different rotation phases from driving targets as normal loads; and bearings that rotatably support the rotary shaft wherein the rotary shaft is rotated at a state where the rotary shaft is supported by the bearings to drive the driving targets via the driving reactive force receiving parts, wherein the bearings are respectively provided at both axial sides of one of the two driving reactive force receiving parts, which receives a higher normal load, and wherein a leading end side of the rotary shaft more than the other of the two driving reactive force receiving part, which receive a lower normal load lower than the higher normal load, is configured as a free end.

Reinforced Stators and Fabrication Methods

A stator for a progressive cavity pump or motor comprises a tubular housing having a central axis. In addition, the stator comprises a stator insert coaxially disposed within the housing. The stator insert has a radially outer surface that engages the housing and a radially inner surface defining a helical-shaped through bore extending axially through the stator insert. The stator insert includes an insert body and an insert liner attached to the insert body. The insert body is radially positioned between the housing and the insert liner. The insert body comprises a reinforcement structure and a plurality of voids dispersed within the reinforcement structure.

Vehicular power transmitting system

A vehicular power transmitting system including an oil pump constructed to sufficiently reduce a required drive torque. A high-pressure-port discharge amount of first and second high-pressure passages of the oil pump is determined such that an amount of consumption of working oil of relatively high pressure can be afforded only by the high-pressure-port discharge amount, during steady-state running of a vehicle in which engine speed is not lower than a predetermined threshold value corresponding to a predetermined lowest target input shaft speed of a continuously variable transmission for its shifting control. The pressure of the working oil discharged from first and second low-pressure discharge passages is kept at a predetermined low level, and the required drive torque of the oil pump is sufficiently reduced.

Oil pump

An oil pump includes a capacity adjustment mechanism that changes the pump capacity by moving a tubular body in a tube radial direction, with a pump chamber formed between the tubular body and an outer circumference side of a rotor, a first spring biasing the tubular body in a direction in which pump capacity increases, a control valve that converts oil pressure of the oil pump into control pressure and causes the control pressure to act on the capacity adjustment mechanism, and a second spring biasing a valve body in order to set the control pressure in the control valve. The relationship of the biasing forces of the first and second springs is set so that pump capacity is set to maximum when the engine rotational speed is less than a predetermined value, and so that pump capacity is reduced when the engine rotational speed exceeds a predetermined value.

Coaxial progressive cavity pump

This invention relates a progressive cavity pump with a central feed-through for supplying steam, gas or liquids to the supply side of the pump. For the oil industry this invention enables single well stimulation. Steam can be supplied from the surface to the production zone or below through the central feed-through, heating or pressurizing oil and the surrounding formation, and facilitating production. In heavy oil fields solvents can be pumped down as well. Oil can be pumped up by the progressive cavity pump through the annulus of the connecting coaxial pipe. 1. A progressive cavity pump consisting of in essence one axially uniform rotor of oval shape and sets of two rockers with straight-edged shape and housing , with an isolated cavity through the rotor connecting both sides of the pump , to be used for supplying gas or liquid to the supply side of the pump.2. A progressive cavity pump consisting of in essence one axially uniform rotor of oval shape and two rockers with straight-edged shape and one housing , with an isolated cavity through the rotor connecting both sides of the pump , to be used for supplying gas or liquid to the supply side of the pump.3. A progressive cavity pump of or , where the shape of the rotor changes in axial direction to allow for compression or decompression. The invention is to be applied as pump, with an internal channel through the rotor of the pump, for supplying heating or pressure by steam to the supply side of the pump.1. Objects of the InventionOld, almost depleted, oil wells can be revived if steam is injected. Previously at least one additional steam injection well would be necessary. With this solution single wells can be continuously stimulated by steam injection through, and below, the pump, to heat the formation and to heat the produced oil, thus keeping the viscosity low and the oil flowing more freely. With the same reasoning, the pump can be applied for tarsand and other heavy oil wells.2. Background of the ...

Wiper assembly for a pump

A wiper assembly may be used to prevent wellbore debris from entering an operating region of a pump. The wiper assembly may include a housing, a wiper member, a backing member, and a biasing member. The biasing member may bias the backing member into engagement with the wiper member, and thereby bias the wiper member into engagement with a tapered surface of the housing. The wiper member may include a corresponding tapered surface, which thereby forces the wiper member radially inward into engagement with an operating member of the pump.

Progressing cavity pump/motor

A progressing cavity pump/motor includes a stator ( 12 ) having a metal interior surface ( 14 ) and one or more spiraling internal lobes ( 16 ). The rotor ( 18 ) has a metal exterior surface ( 20 ) and one or more spiraling external lobes ( 22 ) for cooperating with the stator to form progressing cavities between the stator and the rotor during rotation of the rotor. One or both the stator interior surface and the rotor exterior surface include a rough surface ( 30 ) having an Ra greater than 100 micro inches, such that fluid flowing to a gap between the stator and the rotor is disrupted by the rough surfaces to reduce fluid leakage between the stator and the rotor.

Double internal gear wheel pump

A double internal gear wheel pump includes two internal gear wheel pumps configured as hydraulic pumps of a hydraulic, slip-controlled vehicle braking system. The double internal gear wheel pump further includes a partition wall that is arranged between both internal gear wheel pumps. The partition wall is configured as a single-piece component of a pump housing, preferably formed by a hydraulic block of the vehicle braking system.

ROTOR FOR OIL PUMP

A rotor for an oil pump according to the present invention is a rotor that includes an inner rotor configured by teeth, each of which has a plurality of ellipses or circles, and an outer rotor that is disposed on the outside of the inner rotor and has one tooth more than the inner rotor, wherein, in a tooth of the inner rotor, a tooth top and a tooth root of a drive-side half-tooth region extending from the tooth top to the tooth root and a tooth top and a tooth root of a non-drive-side half-tooth region extending from the tooth top to the tooth root are each configured by a different ellipse or a circle. A circumferential axis along a circumferential direction of the ellipse or circle configuring the tooth top is longer in the non-drive-side half-tooth region than in the drive-side half-tooth region. 1. A rotor for an oil pump , comprising:an inner rotor configured by teeth, each of which has a plurality of ellipses or circles; andan outer rotor that is disposed on the outside of the inner rotor and has one tooth more than the inner rotor,wherein, in a tooth of the inner rotor, a tooth top and a tooth root of a drive-side half-tooth region extending from the tooth top to the tooth root and a tooth top and a tooth root of a non-drive-side half-tooth region extending from the tooth top to the tooth root are each configured by a different ellipse or a circle, and a circumferential axis along a circumferential direction of the ellipse or circle configuring the tooth top is longer in the non-drive-side half-tooth region than in the drive-side half-tooth region.2. The rotor for an oil pump according to claim 1 , wherein a circumferential axis along a circumferential direction of the ellipse or circle configuring the tooth root is longer in the non-drive-side half-tooth region than in the drive-side half-tooth region.3. A rotor for an oil pump claim 1 , comprising:an inner rotor configured by teeth, each of which has a plurality ellipses or circles; andan outer rotor that ...

Polyetherimide pump

A positive displacement pump and methods of making a positive displacement pump having a component, the component having a density ranging from more than 0 to 3 g/cm 3 , a glass transition temperature (Tg) greater than or equal to 150° C., and a yield strength retention greater than 90% after soaking in engine oil for 7 days at 150° C.

INTERNAL GEAR PUMPS FOR A HYDRAULIC VEHICLE BRAKING SYSTEM

An internal gear pump for a slip-controlled hydraulic vehicle braking system includes a pinion, a ring gear, and a filler piece (sickle). The filler piece has an inner part extending in a curved manner in the peripheral direction and an outer part extending in a curved manner in the peripheral direction. The inner part and the outer part are interconnected in a hinged manner on the suction-sided ends. A leg spring is arranged between the inner and outer parts and is configured to separate the inner and outer parts and press against the tops of the teeth of the pinion and the tops of the teeth of the ring gear of the internal gear pump. 1. An internal gear pump for a hydraulic vehicle braking system , comprising:an internally toothed ring gear;an externally toothed pinion arranged eccentrically in the ring gear and configured to mesh with the ring gear in a circumferential section, the pinion and the ring gear forming a crescent-shaped cavity opposite the circumferential section in which the pinion meshes with the ring gear; anda filler piece arranged in the cavity, the filler piece having an inner side on which heads of teeth of the pinion bear against and an outer side on which heads of teeth of the ring gear bear against,wherein the filler piece comprises a leg spring having legs disposed in the circumferential direction, the legs being configured to urge the filler piece inwards and outwards against the heads of the teeth of the pinion and the heads of the teeth of the ring gear.2. The internal gear pump as claimed in claim 1 , wherein the leg spring forms the filler piece and its legs bear against the heads of the teeth of the pinion and the heads of the teeth of the ring gear.3. The internal gear pump as claimed in claim 1 , wherein a yoke of the leg spring is oriented towards a suction side of the internal gear pump.4. The internal gear pump as claimed in claim 1 , wherein the filler piece comprises an inner part having an inner side that bears against the ...

Rotary pump exhibiting an adjustable delivery volume, in particular for adjusting a coolant pump

An adjustable delivery volume rotary pump, including: first and second housing structures; a delivery chamber comprising a first chamber wall formed by the first housing structure, a second chamber wall formed by the second housing structure, a fluid inlet in a low-pressure region and a fluid outlet in a high pressure region; a pump wheel rotatable about a rotational axis in the delivery chamber; and a pressing device for generating pressing force. The second housing structure can be moved relative to the first housing structure from a first to a second position, against the pressing force. In the second position, a gap exists between the first and the second chamber walls and fluid can escape from the delivery chamber by bypassing the inlet and the outlet, or a circulation of the fluid which reduces the delivery rate of the rotary pump arises in the gap within the delivery chamber.

ASYMMETRIC LOBES FOR MOTORS AND PUMPS

An apparatus for use in a wellbore may include a stator having a bore and a rotor disposed in the bore. Either or both of the rotor and the stator may include a layer that has an asymmetrical material property profile along at least a portion of a circumference of that layer. 1. An apparatus for use in a wellbore , comprising:a stator having a bore; anda rotor disposed in the bore, the stator and the rotor cooperating to form at least one fluid chamber and at least one seal at substantially the same time during relative rotation between the rotor and the stator,wherein a layer forming at least a portion of the at least one fluid chamber and portion of the at least one seal has an asymmetrical material property profile.2. The apparatus of claim 1 , wherein: the layer is formed on opposing sides of a lobe associated with the stator claim 1 , and the asymmetrical material property profile is across a circumference of an inner surface of the stator that includes the lobe.3. The apparatus of claim 1 , wherein: the layer is formed on opposing sides of a lobe associated with the rotor claim 1 , and the asymmetrical material property profile is across a circumference of an outer surface of the rotor that includes the lobe.4. The apparatus of claim 1 , wherein the layer is harder at the at least one fluid chamber than at the least one seal.5. The apparatus of claim 1 , wherein the at least one material property is at least one of: (i) hardness claim 1 , (ii) ductility claim 1 , (iii) compressibility claim 1 , (iv) Modulus of elasticity.6. The apparatus of wherein the at least one material property is at least one of: (i) a mechanical property claim 1 , and (ii) a chemical property.7. The apparatus of claim 1 , wherein the layer includes at least one of: (i) elastomeric material claim 1 , (il) a thermo-plastic material claim 1 , (iii) a ceramic material claim 1 , (iv) a metallic material claim 1 , (v) a composite claim 1 , and (vi) a duroplastic material.8. The apparatus of ...

Gerotor pump, a gerotor motor and a gerotor transmission system

A gerotor pump ( 1 ) comprising; a housing ( 2 ) which comprises a first and a second supply socket ( 18 a , 18 b; 19 a, 19 b ), an inner rotor ( 4 ); and an outer rotor ( 5 ) rotatably located relative the housing ( 2 ); wherein the inner rotor ( 4 ) is located within the outer rotor ( 5 ), and lobes ( 13, 4 ) of the inner and the outer rotor ( 4, 5 ) engaging, the inner rotor ( 4 ) is centred around an axis ( 15 b) which is eccentric from an axis of rotation ( 15 ) of said outer rotor ( 5 ), wherein a pressure chamber ( 7 ) with a high pressure and a low pressure section, is defined between the inner and outer rotor ( 4, ), characterised in, that the inner rotor ( 4 ) is rotatably arranged on a shaft cylinder ( 10 b ) which is fixed at one end of a central drive shaft ( 10 ) of the pump ( 1 ) and is centred about said rotational axis ( 15 b ), whereby said inner rotor ( 4 ) wanders in said outer rotor ( 5 ) when said central drive shaft ( 10 ) is turned, and wherein the inner rotor ( 4 ) is provided with radial supply conduits ( 9 ) extending from the pressure chambers ( 7 ) to the shaft cylinder ( 10 b ), and wherein said shaft cylinder ( 10 b ) is provided with at least a first and a second cylinder opening ( 16, 17 ), such that the first cylinder opening ( 16 ) is axially displaced relative the second cylinder opening ( 17 ), and said first opening ( 16 ) is arranged such that it is connected to said high pressure section, and said second cylinder opening ( 17 ) is arranged such that it is connected to said low pressure section.

INTERNAL GEAR PUMP, ESPECIALLY FOR A VEHICLE HYDRAULIC BRAKE SYSTEM

An internal gear pump includes a separator arranged in a pump chamber of the internal gear pump. The separator divides the pump chamber into a delivery chamber and a suction chamber and is arranged so as to be radially moveable and capable of pivoting. The internal gear pump further includes a bearing ring in which a ring gear of the internal gear pump is rotatably supported such that it can pivot about a pin. A pressure prevailing in the pump chamber when the internal gear pump is in operation acts on the ring gear and the bearing ring with a torque, which acts inwardly from the pin in a circumferential direction to the suction chamber and presses tooth tips of teeth of the ring gear inwards against the separator and presses the separator inwards against tooth tips of teeth of the pinion. 1. An internal gear pump , comprising:an internally toothed ring gear rotatably supported in a bearing;an externally toothed pinion arranged eccentrically in the ring gear and configured to mesh with the ring gear in a circumferential portion; anda separator arranged in a crescent-shaped pump chamber of the internal gear pump, the separator being configured to bear against tooth tips of teeth of the pinion and of the ring gear and to divide the pump chamber into a suction chamber and a delivery chamber, the separator existing between the pinion and the ring gear opposite the circumferential portion in which the pinion meshes with the ring gear,wherein the separator is moveable in a radial direction, andwherein the bearing is supported so that it is configured to pivot about a pivot axis, which is arranged eccentrically in relation to an axis of rotation of the ring gear, so that via the ring gear a pressure of a fluid delivered by the internal gear pump, prevailing in the pump chamber when the internal gear pump is in operation and acting internally on the ring gear, exerts a torque on the bearing, which externally presses the ring gear against the separator.2. The internal gear ...

IN-WHEEL MOTOR VEHICLE DRIVE APPARATUS

An in-wheel motor vehicle drive device includes an electric motor driving a drive gear, and the drive gear provided with a gear portion configured to receive drive force of the drive gear and a first wall surface extending along a direction orthogonal to an extending direction of a rotation center axis of the gear portion, the first wall surface for forming a pump chamber. The in-wheel motor vehicle drive device further includes a hub configured to transmit the drive force to the wheel, and an oil pump driven by the electric motor. The oil pump includes an oil pump cover including a second wall surface facing the first wall surface of the pump chamber, and a pump rotator arranged at a space between the first wall surface of the driven gear and the second wall surface of the oil pump cover, the pump rotator integrally rotating with the driven gear. 2. The in-wheel motor vehicle drive device according to claim 1 , further comprisingouter teeth provided at the gear portion of the driven gear, the outer teeth meshing with the drive gear; andan oil path formed between the first wall surface of the driven gear and the oil pump cover, the oil path introducing the oil to the outer teeth of the driven gear.3. The in-wheel motor vehicle drive device according to claim 2 , wherein the gear portion of the driven gear includes a lubricating hole provided to penetrate the gear portion claim 2 , the lubricating hole communicating with the oil path.4. The in-wheel motor vehicle drive device according to claim 1 , wherein a first rotator attached to the driven gear; and', 'a second rotator attached to the oil pump cover so as to be rotatable therewith, the second rotator meshing with the first rotator; and, 'the pump rotator includes'}the oil pump is configured to introduce the oil to the pump chamber and to discharge the oil from the pump chamber by rotation of the second rotator in accordance with rotation of the first rotator.5. The in-wheel motor vehicle drive device according ...

ROTATING BODY, ROTATING BODY MATERIAL, AND METHOD OF MANUFACTURING ROTATING BODY

A novel rotating body, its material, and manufacturing method thereof, shortening a distance for cutting a bore surface in its axial direction, reducing processing costs, enabling lower-cost manufacture of inner rotor. A metallic rotating body has a bore surface for press-fitting a shaft thereinto, including a cutting-processed portion at first end and an unprocessed portion at second end. The processed portion has an inner diameter formed smaller than the unprocessed portion A chamfer at first end of the bore surface is cut, while a chamfer at the second end not. A bore surface of material processed into the rotating body includes a small-diameter portion at first end and a large-diameter portion at second end. A step is formed between the small- and large-diameter portions with the chamfer formed at second end. 1. A rotating body which is made of metal and provided for press-fitting a shaft thereinto , comprising:a surface of a bore into which the shaft is press-fitted, the surface of the bore including a processed portion that has undergone a cutting processing at a first end, and an unprocessed portion that has not undergone a cutting processing at a second end,wherein the processed portion is formed to have an inner diameter smaller than an inner diameter of the unprocessed portion.2. The rotating body according to claim 1 , further comprising a chamfered portion on both ends of the surface of the bore claim 1 , wherein the chamfered portion at the first end has undergone a cutting processing claim 1 , while the chamfered portion at the second end has not undergone a cutting processing.3. The rotating body according to claim 1 , wherein the rotating body is an inner rotor for an internal gear oil pump.4. A rotating body material which is to be processed into a metallic rotating body for press-fitting a shaft thereinto claim 1 , comprising:a surface of a bore including a comparatively small-diameter portion at a first end, and a comparatively large-diameter ...

TROCHOID PUMP FOR TRANSFERRING HIGH-VISCOSITY LIQUID UNDER HIGH PRESSURE

Disclosed is a trochoid pump for transferring high-viscosity liquids under high pressure. The trochoid pump includes an idler coupled to an inner through-hole inside a housing to be rotated, a rotor inserted into an inside of the idler, and a shaft configured to rotate the rotor, wherein the idler is provided with an inner toothed groove, into which the rotor is inserted and which has a plurality of projecting teeth, and recessed grooves, which are recessed with a predetermined depth along an outer circumferential surface thereof in a circumferential direction. Unlike an existing gear pump or trochoid pump, the trochoid pump for transferring high-viscosity liquids can reduce a viscous friction force, and can reduce the driving power. 1. A trochoid pump comprising:an idler rotatably coupled to an inner through-hole on an inside of a housing, a rotor inserted into an inside of the idler, and a shaft rotating the rotor,wherein the rotor is inserted into the idler and the idler has an inner toothed groove having a plurality of projecting gear teeth formed thereon, and a recessed groove formed on an outer circumference with a predetermined depth in a circumferential direction.2. The trochoid pump according to claim 1 , wherein the at least one recessed groove is formed on a center portion of the outer circumference of the idler claim 1 , and front and rear circular grooves are formed at front and rear ends that come in contact with an end portion of the rotor on an outer circumference of the idler.3. The trochoid pump according to claim 2 , wherein the front and rear circular grooves are formed to be deeper than the recessed groove.4. The trochoid pump according to claim 1 , wherein the outer circumference of the idler is spaced apart from an inner circumference of the inner through-hole of the housing to form a gap between them.5. The trochoid pump according to claim 1 , wherein the rotor is constructed so that a plurality of gears are formed on an outer circumference ...

OIL PUMP FOR ENGINE

An oil pump includes a pump housing comprising an oil input port formed at one side of the pump housing. An oil output port is formed at another side of the pump housing. An oil flow unit is provided at a center of the pump housing, and the oil flow unit compresses and discharges oil input from the oil input port toward the oil output port. A bypass passage circulates the oil from the oil output port to the oil input port. A pressure control chamber allows the oil to flow through the oil output port and the bypass passage. The pressure control chamber has a plunger that is supported by an elastic body and moves in accordance with oil pressure. A bypass hole is formed at one side of the pressure control chamber and allows the oil passing through the oil output port to flow to the bypass passage when the plunger moves due to the oil pressure. The amount of oil flow increases depending on a movement distance of the plunger. 1. An oil pump , comprising: an oil input port formed at one side of the pump housing;', 'an oil output port formed at another side of the pump housing; and', 'an oil flow unit provided at a center of the pump housing, wherein the oil flow unit compresses and discharges oil input from the oil input port toward the oil output port;', 'a bypass passage for circulating the oil from the oil output port to the oil input port;', 'a pressure control chamber for allowing the oil to flow through the oil output port and the bypass passage, wherein the pressure control chamber has a plunger that is supported by an elastic body and moves in accordance with oil pressure; and', 'a bypass hole formed at one side of the pressure control chamber and allows the oil passing through the oil output port to flow to the bypass passage when the plunger moves due to the oil pressure,', 'wherein the amount of oil flow increases depending on a movement distance of the plunger., 'a pump housing including2. The oil pump of claim 1 , wherein the bypass hole has a width that ...

SYSTEM AND METHOD FOR OPERATING A PUMP

A pumping system and method for operating a pumping system including a motor coupled to a variable speed drive to drive a pump. A torque indicator corresponding to the torque presented to the drive is determined. The torque indicator may be used to detect a fault if it exceeds a baseline torque, or to detect a defective transducer, or to detect a system change by perturbing one parameter and comparing another to a predicted value. 1. A pumping system comprising: a pump and a motor coupled to a variable speed drive to drive the pump , the variable speed drive including a processor and a non-transitory computer readable medium having embedded therein processing instructions configured to perform a method when executed by the processor , the method including:periodically measuring a fluid parameter with a transducer;controlling the pump based on the fluid parameter;correlating the fluid parameter and a motor torque indicator selected from torque, power and current;predicting a value of the torque indicator or the fluid parameter based on the correlation;comparing the predicted value to an actual value of the torque indicator or the fluid parameter; andif the comparison exceeds a prediction threshold, controlling the pump based on the torque indicator.2. A pumping system as in claim 1 , wherein the fluid parameter is based on at least one of pressure and fluid level.3. A pumping system as in claim 2 , wherein the fluid parameter is additionally based on a corrected fluid level obtained by subtracting a casing pressure in a well from an actual bottom-hole pressure.4. A pumping system as in claim 1 , the method further comprising modeling the motor and predicting toque conditions.5. A pumping system as in claim 1 , wherein the variable speed drive comprises a variable frequency drive.6. A method for operating a pumping system claim 1 , the method comprising:driving a pump with a motor coupled to a variable frequency drive;periodically measuring a fluid parameter with a ...

ECCENTRIC SCREW PUMP WITH OVERPRESSURE PROTECTION

An eccentric screw pump comprising an outer part () and an inner part () therein, one of the parts () being driven rotatably and the other part () being able to move eccentrically relative to the other part (). The screwthreads () of the outer part () extend angularly over less than an entire helix along the axial length (L) of the part, so that during operation pumping chambers that are open to both ends are created, through which sudden pressure relief takes place. 2. The pump according to claim 1 , wherein the screwthreads of the outer part extend angularly only through between 75% and 95% of an entire helix along the axial length of the part.3. The pump according to claim 1 , wherein the outer part is eccentrically movable around the axis of the inner part claim 1 , and the inner part is rotatably driven.4. The pump according to claim 1 , wherein the outer part is made of an elastomeric material and at one of its axial ends is held on the pump housing via an elastic support structure.5. The pump according to claim 1 , wherein the axial length of the outer part is selected such that the pump has a predetermined maximum delivery head. This application is the US-national stage of PCT application PCT/EP2014/000320 filed 6 Feb. 2014 and claiming the priority of German patent application 102013003833.2 itself filed 7 Mar. 2013.The invention relates to a pump for moving a medium to be displaced from an intake end to an output end, comprising an outer part and an inner part arranged therein, one of the parts being driven rotatably and the other part being able to move eccentrically relative to the one part. The inner part has at least one screwthread extending helically and axially, and the outer part has a number of screwthreads that is greater by one than the inner part. The ratio of the number of screwthreads in every cross-section is identical to the ratio of the pitches of the screwthreads, and the outer part and the inner part make contact in such a way that the ...

Oil pump and power transmitting device equipped with the same

A driven sprocket of a chain driving mechanism is fixed to a rotation shaft between a front pump cover and a converter housing, and the rotation shaft is supported by a first supporting hole of the front pump cover and a second supporting hole of a rear pump cover. The movement of the driven sprocket in such a direction that it approaches the converter housing is restricted by a case side projection formed on the converter housing, and the movement of the driven sprocket in such a direction that it separates from the converter housing is restricted by a cover side projection formed on a bottom surface of the second supporting hole.

INTERNAL GEAR PUMP

An internal gear pump includes a pinion, a ring arranged around the pinion, and a cylindrical wall arranged around the ring. A support element, on which the pinion and the ring are supported, carries high-pressure liquid towards a recess located at the junction between the ring and the cylindrical wall, and also carries low-pressure liquid towards another recess located at another point of the junction between the ring and the cylindrical wall. The recess allows the load of the ring on the cylindrical wall to be reduced. 1. An internal gear pump comprising:a pinion capable of rotating about a first axis of rotation;a ring arranged around the pinion, having a cylindrical periphery and being configured to rotate about a second axis of rotation that is different to the first axis of rotation and parallel thereto, the pinion and the ring being arranged to delimit a work space comprising a high-pressure space and a low-pressure space;a first support element arranged on a first side of the ring to limit the movement thereof in a first sense along a first orientation that is substantially parallel to the first and second axes of rotation;a second support element arranged on a second side of the ring to limit the movement thereof in a second sense that is opposite the first sense and in the first orientation;a cylindrical wall arranged around the ring to limit the movement thereof in a plane that is substantially perpendicular to the second axis of rotation;a first high-pressure recess in an arc of a circle and in fluid contact with a first portion of the cylindrical periphery of the ring;a first low-pressure recess in an arc of a circle and in fluid contact with a second portion of the cylindrical periphery of the ring, the first high-pressure recess and the first low-pressure recess being separated;a first high-pressure conveying means forming a fluid connection between the high-pressure space and the first high-pressure recess; anda first low-pressure conveying means ...

Design and Method to Improve Downhole Motor Durability

Rotor and/or stator designs and methods thereof to improve progressive cavity motor or pump durability. In one or more implementations, the rotor may have a variable outer diameter or variable stiffness along an axial length thereof. The stator may similarly have a variable inner diameter or variable stiffness, which may compliment or diverge from the variable outer diameter or variable stiffness of the rotor. 1. A progressive cavity motor or pump , comprising:a stator with an internal axial bore therethrough, the internal axial bore having an inwardly facing surface with axial lobes arranged and designed to form a stator helical profile; anda rotor with an outer surface having axial lobes arranged and designed to form a rotor helical profile that is at least partially complimentary to the stator helical profile; the rotor being rotationally disposed within the internal axial bore of the stator; the axial lobes of the rotor numbering at least one less than the axial lobes of the stator to form a moving chamber between the rotor and stator; the rotor having a diameter that varies along an axial length thereof, the diameter of the rotor proximate an uphole end portion thereof being no greater than at a downhole end portion thereof.2. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor proximate the downhole end portion thereof is greater than at an uphole diameter.3. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor intermediate the uphole end portion and the downhole end portion is a minimum diameter.4. The progressive cavity motor or pump of claim 3 , wherein claim 3 ,rotor stiffness proximate the minimum diameter is less than elsewhere along the axial length of the rotor.5. The progressive cavity motor or pump of claim 1 , wherein claim 1 ,the rotor is constructed of the same materials at the uphole end portion as at the downhole end portion.6. The progressive cavity motor or pump of wherein claim 1 , ...

LINERS FOR ROTORS AND STATORS

A rotor and/or stator dampening system includes a stator and/or rotor with a liner selected of one or more materials to achieve a desired dampening effect. In one implementation, a progressive cavity motor or pump includes a stator with an internal axial bore therethrough. The stator has a liner along an axial length thereof with an inwardly facing surface defining the internal axial bore therethrough. The liner has a plurality of axial sections with at least two of the plurality of axial sections being constructed of different materials. A compression resistant mechanism, such as a spring or spring-like device, is disposed within at least one of the axial sections of the liner. The progressive cavity motor or pump also includes a rotor that is disposed and is rotatable within the internal axial bore of the stator to form a moving chamber between the rotor and the stator. 1. A progressive cavity motor or pump comprising:a stator with an internal axial bore therethrough, the stator having a liner along an axial length thereof with an inwardly facing surface defining the internal axial bore therethrough, the inwardly facing surface with axial lobes arranged and designed to form a stator helical profile, the liner having a plurality of axial sections, at least two of the plurality of axial sections being constructed of different materials;a rotor with an outer surface having axial lobes arranged and designed to form a rotor helical profile that is a least partially complimentary to the stator helical profile, the rotor being rotationally disposed within the internal axial bore of the stator to form a moving chamber between the rotor and the stator; anda compression resistant mechanism disposed within at least one of the axial sections of the liner.2. The progressive cavity motor or pump of wherein claim 1 ,the compression resistant mechanism is a spring.3. The progressive cavity motor or pump of wherein claim 2 ,an axial gap exists between at least two of the plurality ...

HYDRAULIC MOTOR SUBASSEMBLY KIT WITH CARRIER

A carrier for a motor subassembly of a hydraulic motor is provided that enables multiple components of the motor subassembly to be temporarily bundled into a compact and easy-to-transport motor subassembly kit. The carrier is a non-hydraulically-functioning member that is configured to have one or more features that mimic a corresponding one or more features of a hydraulically-functioning motor housing to which motor subassembly is intended to be coupled for forming the hydraulic motor. The carrier may have a body with a recessed portion that is configured to receive and/or enclose one or more components of the motor subassembly, and which may cooperate with the one or more motor subassembly components to temporarily secure and bundle the motor subassembly as a compact kit, thereby facilitating transportation and handling of the subassembly components. 1. A motor subassembly kit for a hydraulic motor , the kit comprising:a hydraulically-operable motor subassembly having a plurality of motor components that are configured to be operably coupled to a hydraulically-operable motor housing for at least partially forming the hydraulic motor; anda non-hydraulically-operable carrier for carrying the motor subassembly;wherein the carrier cooperates with the motor subassembly to temporarily secure the plurality of motor components of the motor subassembly as a transportable bundle, andwherein the carrier has one or more portions that mimic a corresponding one or more portions of the hydraulically-operable motor housing, thereby facilitating transportation of the plurality of motor components in the transportable bundle.2. The motor subassembly kit according to claim 1 , wherein the carrier includes a body having a nose portion claim 1 , a base portion claim 1 , and an intermediate portion extending between the nose portion and the base portion;wherein the carrier has an opening in the base portion for receiving one or more of the plurality of motor components, andwherein the ...

ELECTRIC PUMP SYSTEM AND METHOD

An electric pump system and method of operating the same involves pumping a fluid through a fluid passageway defined in a mechanical pump from a pump inlet to a hollow shaft of a motor, through the hollow shaft to an internal motor cavity defined by a housing of the motor, and through another fluid passageway defined in the motor housing and mechanical pump that leads to a pump outlet. The system and method further involve pumping the fluid through another fluid passageway defined in the mechanical pump from yet another pump inlet to the pump outlet. The temperature of fluid exiting the hollow shaft can be assessed and used by an electronic control unit (ECU) of the electric pump system to control the same. The electric pump system can be part of a cooling and lubrication system for an electric vehicle transmission, gearbox, differential or transfer case, for example. 1. An apparatus comprising: a stator;', 'a rotor comprising a shaft; and', 'a housing around the stator and rotor and defining an internal motor cavity and a bypass inlet in fluid communication with the internal motor cavity;, 'a motor having a first side and a second side, the motor includingan electronic control unit connected to the first side of the motor;a mechanical pump connected to the second side of the motor and defining a first fluid passageway from a first pump inlet to a pump outlet; andwherein the motor housing and mechanical pump further defining a second fluid passageway from the internal motor cavity to the pump outlet via a second pump inlet.2. The apparatus of claim 1 , wherein the electronic control unit further comprises a thermistor.3. The apparatus of claim 1 , wherein the shaft is a hollow shaft that defines a shaft inlet and a shaft outlet claim 1 , wherein the mechanical pump defines a third fluid passageway from a third pump inlet to the shaft inlet claim 1 , and wherein the shaft outlet is in fluid communication with the internal motor cavity.4. The apparatus of claim 3 , ...

Drive device

In a drive device, a housing includes an outer lid that covers one side in an axial direction of a motor shaft. A pump includes an external gear fixed to an end on one side in the axial direction of the motor shaft, an internal gear surrounding a radial outside of the external gear and meshing with the external gear, a pump room recessed from a surface on the other side in the axial direction of an outer lid toward one side in the axial direction, the pump room accommodating the internal gear and the external gear, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The motor shaft includes a motor shaft body to which a rotor core is fixed and a closer fixed to the motor shaft body to overlap the internal gear, and close at least a portion of the opening on the other side in the axial direction of the pump room.

METHOD AND KIT FOR GEROTOR REPAIR

An improved repair method and repair kit for gerotor pumps that have become damaged or worn in order to allow the pump to create a sound seal once more. 1. A method for improving gerotor performance comprising:inserting a wear plate within a gerotor assembly;providing a front cover piece which is placed overtop the gerotor; andperforming the above steps without removing a front cover of an engine.2. The method of claim 1 , wherein the wear plate is added to a rear of a gerotor case.3. The method of claim 1 , wherein the wear plate is shaped to conform to a front cover bottom of the engine.4. The method of claim 1 , wherein the wear plate is inserted to engage a lower surface of the gerotor.5. The method of claim 1 , wherein an upper surface of the gerotor engages a lower face of the front cover piece.6. The method of claim 1 , wherein the front cover piece defines openings that correspond to receiving openings in the front cover of the engine.7. The method of claim 1 , wherein the front cover piece has a lower face sized to accommodate a thickness of the wear plate.8. The method of claim 7 , wherein the lower face includes a channel or grove sized to offset the thickness of the wear plate.9. The method of claim 1 , wherein the method is performed without replacing gaskets or adding spacers to the gerotor assembly.10. A method for repairing an existing gerotor assembly in a vehicle comprising:removing a fan shroud, belt, fan clutch, and fan assembly from an engine;removing a harmonic balancer from the engine;removing a gerotor oil pump cover;removing a gerotor;removing a crankshaft seal wear ring;installing a gerotor wear plate;reinstalling the crankshaft seal wear ring;reinstalling the gerotor;installing a front cover piece that accommodates the wear plate;reinstalling the harmonic balance; andreinstalling the fan shroud, belt, fan clutch, and fan assembly.11. The method of wherein the gerotor assembly is repaired without removing an engine front cover.12. The ...

Rotary damper for a vehicle

A rotary damper, for a vehicle, for damping relative movements between vehicle wheels and the vehicle body. The at least one gear assembly has several gearwheels in functional connection by virtue of rotational movement of which hydraulic medium can be displaced for the purpose of hydraulic damping for the vehicle.

OIL PUMP

An oil pump of the present invention includes a housing () which includes an inlet port () to suck oil, a discharge port () to discharge oil, and a purge port () to eject air-mixed oil, an inner rotor () which is arranged in the housing as being rotatable about a predetermined axis line (S), an outer rotor () which is arranged in the housing to be rotated as being interlocked with the inner rotor, and a filter member () which is arranged at the housing from the outside thereof to prevent foreign matter from entering through the purge port. According to the above, entering of foreign matter and the like can be prevented even when oil is sucked through the purge port. 1. An oil pump , comprising:a housing which includes an inlet port to suck oil, a discharge port to discharge oil, and a purge port to eject air-mixed oil with air mixed;an inner rotor which is arranged in the housing as being rotatable about a predetermined axis line;an outer rotor which is arranged in the housing to be rotated as being interlocked with the inner rotor; anda filter member which is arranged at the housing from the outside thereof to prevent foreign matter from entering through the purge port.2. The oil pump according to claim 1 ,wherein the purge port is arranged at a range capable of providing communication, concurrently with the inlet port, with a pump chamber defined by the inner rotor and the outer rotor.3. The oil pump according to claim 1 ,wherein the housing includes a housing body including a concave portion for containing the inner rotor and the outer rotor, and a housing cover which is connected to the housing body to close an opening of the housing body,the purge port is formed at the housing cover, andthe filter member is attached to the housing cover from the outside.4. The oil pump according to claim 1 ,wherein the inner rotor and the outer rotor include an upstream rotor including a first inner rotor and a first outer rotor and a downstream rotor including a second inner ...

Turbine engine provided with a lubrication unit

A turbine engine includes two rotary shafts and a lubrication unit. The lubrication unit has at least one pump which a casing inside of which a rotor is mounted and driven by one of the rotary shafts. The pump casing is rotated by the other rotary shaft such that the actuation of the pump depends on the difference between rotational speeds of the shafts. The shafts are a drive shaft and a fan shaft, respectively, wherein the fan shaft is driven by the drive shaft by means of a reduction gear which is lubricated by the lubrication unit. The reduction gear is annular and the pump passes axially therethrough.

SYSTEM AND METHOD FOR CONTROL AND OPTIMIZATION OF PCP PUMPED WELL OPERATING PARAMETERS

A method of controlling the production efficiency of a well includes determining one or more parameters of a pump model for a pump of the well, determining an inflow rate of liquid into the well, and adjusting a pumping speed of the pump based on the one or more parameters of the pump model to maintain a outflow rate of liquid from the well at a desired fraction of the inflow rate. 1. A method of controlling the production efficiency of a well , the method comprising:determining one or more parameters of a pump model for a liquid pump of the well by measuring well outflow of liquid from the well at a plurality of different pumping speeds of the liquid pump; andadjusting a nominal operating pumping speed of the pump based on the one or more parameters of the pump model to maintain a well outflow rate of liquid from the well at a desired level.2. The method of claim 1 , wherein the desired level is a predetermined fraction of an inflow rate of fluid into a well bore of the well.3. The method of claim 1 , wherein the one or more parameters of the pump model include one of slippage and cavity fillage.4. The method of claim 3 , wherein the slippage is determined by a method including:measuring a first well outflow rate while running the liquid pump at a first speed; andcalculating the slippage by a comparison of a theoretical pump outflow at the first speed provided by a manufacturer of the liquid pump and the first well outflow rate.5. The method of claim 4 , further comprising increasing the efficiency of the well by adjusting the pumping speed of the liquid pump based on the slippage and a displacement of the pump.6. The method of claim 3 , wherein the cavity fillage is determined by a method including:measuring a first well outflow rate while running the liquid pump at a first speed;measuring a second well outflow rate while running the liquid pump at a second speed; andcalculating the cavity fillage from a comparison between the first well outflow rate and the ...

Stator-Rotor System And Method For Adjusting A Stator In A Stator-Rotor System

A stator-rotor system of an eccentric screw pump including a rotor with a rotor screw and a stator with an internal thread. The stator includes a support element and an elastomer part. The support element surrounds the elastomer part in sections around the whole circumference. The stator-rotor system includes a mechanism for adjusting the stator, having two adjustment elements arranged on the stator-rotor system, which are distance-variable relative to one another. In a first working position the two adjustment elements have a first distance from one another and in a second working position, a second distance. The cross-section and the length of the elastomer part of the stator in the second working position are changed compared to the cross-section and the length of the elastomer part in the first working position. 1. A stator-rotor system of an eccentric screw pump comprising a rotor with a rotor screw and a stator with an internal thread , the stator comprising a support element and an elastomer part , wherein the support element surrounds the elastomer part in sections around the whole circumference , characterised in that the stator-rotor system comprises an adjusting mechanism for adjusting the stator , the adjusting mechanism comprising at least two adjustment elements coupled to the stator-rotor system , wherein the two adjustment elements are distance-variable relative to one another , wherein the two adjustment elements have a first distance from one another in a first working position and wherein the two adjustment elements have a second distance from one another in a second working position , wherein the first distance is not equal to the second distance , wherein in the second working position the cross-section and the length of the elastomer part of the stator are changed compared to the cross-section and the length of the elastomer part in the first working position.2. The stator-rotor system according to claim 1 , wherein a mechanical coupling and/or ...

Eccentric Screw Pump And Method For Adapting The Operating State Of An Eccentric Screw Pump

The invention pertains to an eccentric screw pump with a stator-rotor system, which includes a rotor with a rotor screw and a stator with an internal thread. The stator has a support element and an elastomer part, wherein the support element encloses the elastomer part sectionally over its entire circumference. The stator-rotor system has a mechanism for adjusting the stator, which is coupled to at least one sensor for determining actual operating parameters of the stator-rotor system by means of a control unit that activates the adjusting mechanism with consideration of the actual operating parameters determined with the aid of at least one sensor. 1. An eccentric screw pump with a stator-rotor system comprising a rotor with a rotor screw and a stator with an internal thread , wherein the stator comprises a support element and an elastomer part , and wherein the support element encloses the elastomer part at least sectionally over its entire circumference , characterized in that the stator-rotor system features an adjusting mechanism for adjusting the stator which is coupled to at least one sensor for determining actual operating parameters of the stator-rotor system with control unit that can activate the adjusting mechanism with consideration of the actual operating parameters determined with the aid of at least one sensor.2. The eccentric screw pump according to claim 1 , wherein the adjusting mechanism comprises two adjusting elements that are arranged on the stator-rotor system and variable with respect to their distance from one another claim 1 , wherein a mechanical coupling and/or connection exists between the adjusting elements of the adjusting mechanism and the stator such that a change in the cross section and the length of the elastomer part of the stator can be realized by changing the relative distance between the two adjusting elements.3. The eccentric screw pump according to claim 2 , wherein the first adjusting element is arranged stationary on the ...

FUEL PUMP

An outer gear and an inner gear expand and contract volume of pump chambers formed between both the gears, and rotate to suction fuel into the pump chambers and then discharge fuel from the pump chambers sequentially. The inner gear includes an insertion hole that is depressed along its axial direction. A joint member includes a main body portion that is fitted to a rotary shaft, a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween, and a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding portion. 1. A fuel pump comprising:an outer gear that includes a plurality of internal teeth;an inner gear that includes a plurality of external teeth and is eccentric from the outer gear in an eccentric direction to be engaged with the outer gear;a pump housing that rotatably accommodates the outer gear and the inner gear;an electric motor that includes a rotary shaft which is rotary-driven; anda joint member that connects together the inner gear and the rotary shaft, wherein:the outer gear and the inner gear expand and contract volume of a plurality of pump chambers formed between both the gears, and rotate to suction fuel into the plurality of pump chambers and then discharge fuel from the plurality of pump chambers sequentially;the inner gear includes an insertion hole that is depressed along its axial direction; and a main body portion that is fitted to the rotary shaft;', 'a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween; and', 'a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding ...

FUEL PUMP AND MANUFACTURING METHOD THEREOF

A suction side end part of a suction guide passage and a discharge side end part of a discharge guide passage are opposed to each other with a gap therebetween. At a deviation angle at which contraction of a pump chamber starts, an outer peripheral part of the discharge side end part is formed along an inner tooth, and an inner peripheral part of the discharge side end part is formed along an outer tooth. A working tool that rotates and cuts circularly is moved around on a pump housing in a single continuous line to form an outline of the discharge guide passage, thereby forming the discharge guide passage. The working tool is moved around on the pump housing in a single continuous line to form an outline of the suction guide passage, thereby forming the suction guide passage. 1. A fuel pump comprising:an outer gear that includes a plurality of inner teeth;an inner gear that includes a plurality of outer teeth and is eccentric from the outer gear in an eccentric direction to be engaged with the outer gear; anda pump housing that rotatably accommodates the outer gear and the inner gear, wherein:the outer gear and the inner gear expand and contract volume of a plurality of pump chambers formed between both the gears, and rotate to sequentially suction fuel into the plurality of pump chambers and discharge fuel from the plurality of pump chambers; a sliding surface on which the outer gear and the inner gear slide;', 'a suction guide passage that suctions fuel into the plurality of pump chambers as a guide passage that is recessed from the sliding surface and extends in a circumferential direction of the pump housing; and', 'a discharge guide passage that discharges fuel from the plurality of pump chambers as the guide passage that is recessed from the sliding surface and extends in the circumferential direction;, 'the pump housing includesa suction side end part of the suction guide passage and a discharge side end part of the discharge guide passage are opposed to ...

APPARATUS FOR A COUNTERBALANCE FOR AN ECCENTRIC MOTOR

A pump, comprising a rotor axially located between a fluid inlet section and a fluid outlet section, wherein the rotor is configured to rotate about a center axis, a stator surrounding the rotor, wherein the stator includes an inner diameter surface and an outer diameter surface, wherein the inner diameter surface includes a groove surrounding the stator and concentric about the center axis, and a ring surrounding the stator, wherein the ring is adjacent to the groove and defines a gap between an outer diameter of the surface and an inner surface of the ring, wherein the ring includes a ring mass and the stator includes a stator mass, and the ring mass is substantially equal to the stator mass. 1. A pump , comprising:a rotor axially between a fluid inlet section of the pump and a fluid outlet section of the pump, wherein the rotor is configured to rotate about a center axis;a stator surrounding the rotor; anda ring surrounding about the stator, wherein the ring has a ring mass and the stator has a stator mass, and the ring mass is substantially equal to the stator mass, wherein the ring is configured to rotate about the stator in response to a magnetic flux introduced into the stator.2. The pump of claim 1 , where in the pump further includes an air gap located between an inner diameter of the ring and an outer diameter of the stator.3. The pump of claim 2 , wherein a diameter of the air gap decreases when the magnetic flux is introduced into the stator.4. The pump of claim 2 , wherein the stator further includes a groove located on an outer diameter of the stator claim 2 , wherein a first surface of the groove faces an inner diameter of the ring.5. The pump of claim 1 , wherein the ring is concentric about the center axis.6. The pump of claim 1 , wherein the ring has a first polarity and the stator has a second polarity claim 1 , and the first and second polarity are opposite polarities.7. The pump of claim 1 , wherein the stator includes a plurality of legs claim ...

AUTOMOTIVE ELECTRICAL OIL PUMP

An automotive electrical oil pump includes an oil displacement pumping unit with a pump rotor which rotates in a pump chamber so as to pump a pressurized oil to an oil recipient, an electric driving motor which drives the pump rotor of the oil displacement pumping unit, an electrical connector plug which electrically connects the electric driving motor to a power source, and a fluid connector. The fluid connector includes a pump inlet which is fluidically connected to a chamber inlet, a pump outlet which is fluidically connected to a chamber outlet, a center front opening, and a ring front opening which is arranged coaxially to the center front opening. The center front opening and the ring front opening define the pump inlet and the pump outlet. 112-. (canceled)13. An automotive electrical oil pump comprising:an oil displacement pumping unit comprising a pump rotor which is configured to rotate in a pump chamber so as to pump a pressurized oil to an oil recipient;an electric driving motor configured to drive the pump rotor of the oil displacement pumping unit;an electrical connector plug configured to electrically connect the electric driving motor to a power source; and a pump inlet which is fluidically connected to a chamber inlet,', 'a pump outlet which is fluidically connected to a chamber outlet,', 'a center front opening, and', 'a ring front opening which is arranged coaxially to the center front opening,', 'wherein,', 'the center front opening and the ring front opening define the pump inlet and the pump outlet., 'a fluid connector comprising,'}14. The automotive electrical oil pump as recited in claim 13 , wherein claim 13 ,the fluid connector further comprises a first circular opening wall arranged coaxially to the center front opening, andthe first circular opening wall is configured to fluidically separate the center front opening and the ring front opening.15. The automotive electrical oil pump as recited in claim 13 , wherein claim 13 ,the fluid ...

STATOR ASSEMBLY FOR A PROGRESSIVE CAVITY PUMP OR A PROGRESSIVE CAVITY MOTOR AS WELL AS METHOD FOR MANUFACTURING AND REPAIRING THE SAME

A stator assembly for a progressive cavity pump or a progressive cavity motor includes connectors for connecting functional elements and at least one stator, the stator including an outer pipe as well as a lining subject to wear which is disposed inside the outer pipe, the at least one stator being disposed between the connectors such that a cavity extending across the entire stator assembly for housing a rotor is created. Between at least one of the connectors and at least one stator adjacent thereto and/or between adjacent stators an adhesion region is provided, whereby in the adhesion region an adhesive is disposed in such a way that between the at least one connector and the at least one stator adjacent thereto and/or between said respectively adjacent stators a substance-to-substance connection is created. 1. A stator assembly for a progressive cavity pump or a progressive cavity motor , with connectors for connecting functional elements and at least one stator , said stator comprising an outer pipe as well as a lining disposed inside said outer pipe and being subject to wear , said least one stator being disposed between said connectors so that a cavity extending through the entire stator assembly is formed for housing a rotor ,whereinbetween at least one of said connectors and at least one Stator adjacent thereto and/or between adjacent stators an adhesion region is provided whereby an adhesive is disposed inside said adhesion region in such a way that between said at least one connector and said at least one stator adjacent thereto and/or between said respective adjacent stators a substance-to-substance connection is created.2. The stator assembly according to claim 1 , wherein claim 1 , in addition to the adhesive region claim 1 , a screw thread region is disposed between at least one of said connectors and at least one stator adjacent thereto and/or between the respective adjacent stators for forming a positive locking and force-fit connection.3. The ...

Stators For Downhole Motors, Methods For Fabricating The Same, And Downhole Motors Incorporating The Same

The present invention recites a method of fabricating a stator for a downhole motor, the method comprising the steps of providing a stator tube having an interior surface and applying a bonding agent to the interior surface of the stator tube. Additionally, a mandrel is positioned within the stator tube, the mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator. Furthermore, a reinforcing material is introduced into the stator tube to fill space between the mandrel and the interior surface of the stator tube and subsequently solidified to bond the reinforcing material to the interior surface of the stator tube. The mandrel is then removed from the bonded stator tube and reinforcing material such that a stator is fabricated. 1. A method of fabricating a stator for a downhole motor , the method comprising:providing a stator tube having an interior surface;applying a bonding agent to the interior surface of the stator tube;positioning a mandrel within the stator tube, the mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator;introducing a reinforcing material into the stator tube to fill space between the mandrel and the interior surface of the stator tube;solidifying the reinforcing material to bond the reinforcing material to the interior surface of the stator tube; andremoving the mandrel from the bonded stator tube and reinforcing material;thereby fabricating the stator.2. The method of claim 1 , wherein the stator tube comprises a material selected from the group consisting of: iron claim 1 , steel claim 1 , high speed steel claim 1 , carbon steel claim 1 , tungsten steel claim 1 , brass claim 1 , and copper.3. The method of claim 1 , wherein the bonding agent is a single-layer bonding agent.4. The method of claim 1 , wherein the bonding agent is a multiple-layer bonding agent.5. The method of claim 1 , wherein the mandrel comprises a material selected from the group consisting ...

METAL FELT AND BRUSH STRUCTURES AS SEALING ELEMENTS IN METAL-METAL MUD MOTORS

A mud motor and a drill string having the mud motor. The mud motor includes a stator and a rotor. A lining between the stator and the rotor includes fibers forming a fiber pattern. The lining is a coating of at least one of a lobed inner surface of the stator and a lobed outer surface of the rotor. 1. A mud motor , comprising:a stator;a rotor; anda lining between the stator and the rotor, the lining including fibers forming a fiber pattern.2. The mud motor of claim 1 , wherein the lining is a coating of at least one of a lobed inner surface of the stator and a lobed outer surface of the rotor.3. The mud motor of claim 2 , wherein the lining is adhered by at least one of: (i) an adhesive; (ii) a sintering process; (iii) a soldering process; (iv) a welding process; and (v) a brazing process.4. The mud motor of claim 1 , wherein the fiber pattern further comprises one of: (i) a felt pattern; (ii) a web pattern; (iii) a mesh pattern; and (iv) a brush pattern.5. The mud motor of claim 1 , wherein a material of the fibers includes at least one of: (i) nickel; (ii) nickel alloy; (iii) stainless steel; (iv) low alloy steel; (v) copper; (vi) copper alloy; (vii) carbon fiber; (viii) glass fiber; and (ix) polymeric fiber.6. The mud motor of claim 1 , wherein the fiber pattern includes a gap between the fibers.7. The mud motor of claim 6 , further comprising a secondary material in the gap claim 6 , the secondary material being at least one of: (i) polytetrafluoroethylene (PTFE); (ii) polyether ether ketone (PEEK); (iii) a polymer; and (iv) an elastomer.8. The mud motor of claim 6 , wherein the gap is unfilled.9. The mud motor of claim 1 , wherein the mud motor is configured to operate at temperatures higher than 150 C for more than 40 circulation hours.10. A method for manufacturing a mud motor claim 1 , the method comprising:forming a mud motor comprising a stator and a rotor; anddisposing a lining between the stator and the rotor, the lining including fibers forming a fiber ...

ELECTRIC OIL PUMP

An electric oil pump includes a motor including a motor shaft, a pump assembly including a vane pump driven by the motor to suction and discharge oil, and an inverter to drive the motor. The motor includes a rotor, a stator on a side outward from the rotor in a radial direction, and a motor housing containing the rotor and the stator. The motor housing includes a suction port through which the vane pump suctions oil from outside, and a discharge port through which the vane pump discharges oil to outside. The motor housing includes flat surface portions in a portion of an outer periphery thereof. The suction port and the discharge port are located in a first surface of side surfaces which are the flat surface portions of the motor housing and are parallel or substantially parallel to the axial direction. 112-. (canceled)13. An electric oil pump comprising:a motor including a motor shaft extending along a central axis extending in an axial direction;a pump assembly including a vane pump which is on one side of the motor in the axial direction and is driven by the motor via the motor shaft to suction and discharge oil; andan inverter which is on another side of the motor in the axial direction to drive the motor; wherein a rotor which is rotatable together with the motor shaft;', 'a stator which is on a side outward from the rotor in a radial direction; and', 'a motor housing which houses the rotor and the stator;, 'the motor includes a suction port through which the vane pump suctions oil from outside; and', 'a discharge port through which the vane pump discharges oil to outside;, 'the motor housing includesthe motor housing includes flat surface portions in a portion of an outer peripheral shape thereof; andthe suction port and the discharge port are provided in a first surface of side surfaces which are the flat surface portions of the motor housing and are parallel or substantially parallel to the axial direction.14. The electric oil pump according to claim 13 , ...

Mounting structure for electric oil pump

A mounting structure for electric oil pump is provided to allow the electric oil pump to be mounted without through a communication pipe. The electric oil pump includes a pump unit having an inscribed gear pump, and a motor unit disposed adjacent to the pump unit and having a sensorless brushless DC motor for rotating the inscribed gear pump. A transmission accommodates the electric oil pump and includes a transmission case having an oil pan. The electric oil pump is attached to the transmission case with at least a through hole for supplying working oil to the pump unit being submerged in the working oil reserved in the oil pan.

Stator for Progressive Cavity Pump/Motor

A stator for a progressive cavity pump or motor includes a stator housing having a longitudinal axis. In addition, the stator includes a stator insert of a material moulded within the housing. The stator housing includes an outer tube having an inner surface. The stator housing also includes a plurality of framework elements disposed on the inner surface of the outer tube. Further, the stator housing includes at least one recess in the inner surface of the outer tube. The conjunction of the framework elements and the at least one recess define a plurality of chambers receiving insert material therein whereby the insert material is mechanically fixed axially, radially and torsionally within the outer tube.

PROGRESSIVE CAVITY PUMP AND METHOD FOR OPERATING SAME IN BOREHOLES

A method for operating a progressive cavity pump wherein the stator has at least first and second active stator sections that are at different locations on the stator, comprising inserting a first rotor having a first active rotor section that is aligned with the first active stator section, and rotating the first rotor relative to the first active stator section such that the aligned first active rotor and stator sections generate a pumping force. Subsequently, the first rotor is removed and a second rotor is inserted having a second active rotor section that is aligned with the second active stator section, and rotating the second rotor relative to the second active stator section such that the aligned second active rotor and stator sections generate a pumping force. 18-. (canceled)9. A progressive cavity pump assembly for operation in a borehole , comprising:(a) a unitary stator comprising at least first and second active stator sections at different locations on the stator;(b) a first rotor having a first active rotor section that is configured for alignment with the first active stator section when the first rotor is mounted at a selected location relative to the stator; and(c) a second rotor configured for insertion into the stator independently of the first rotor, and having a second active rotor section that is configured for alignment with the second active stator section when the second rotor is mounted at the selected location relative to the stator, the first and second rotors configured for separate and serial operation within the stator.10. The pump assembly as claimed in further comprising a tubing joint mountable to a bottom end of the stator claim 9 , the tubing joint having a tag bar.11. The pump assembly as claimed in wherein the first rotor comprises a slim rod having a bottom end coupled to the first active rotor section claim 10 , and a top end connectable to a rod string.12. The pump assembly as claimed in wherein the second rotor comprises a ...

AUTOMOTIVE ELECTRICAL OIL PUMP

An automotive electrical oil pump which includes an oil displacement pumping unit with a pump rotor which rotates in a pump chamber to pump oil to an oil recipient, an electric driving motor which drives the pump rotor, an electrical connector plug which connects the electric driving motor to a power source, and a fluid connector. The fluid connector includes a pump inlet fluidically connected to a chamber inlet, a pump outlet fluidically connected to a chamber outlet, a first lateral circular ring opening which define the pump inlet or the pump outlet, and a second lateral circular ring opening or a circular front opening which defines the pump outlet or the pump inlet. The second lateral circular ring opening is provided separate from the first lateral circular ring opening. The pump outlet and the pump inlet are arranged coaxially to each other. 112-. (canceled)13. An automotive electrical oil pump comprising:an oil displacement pumping unit comprising a pump rotor which is configured to rotate in a pump chamber so as to pump a pressurized oil to an oil recipient;an electric driving motor configured to drive the pump rotor of the oil displacement pumping unit;an electrical connector plug configured to electrically connect the electric driving motor to a power source; and a pump inlet which is fluidically connected to a chamber inlet,', 'a pump outlet which is fluidically connected to a chamber outlet,', 'a first lateral circular ring opening which is configured to define the pump inlet or the pump outlet, and', 'a second lateral circular ring opening or a circular front opening which is configured to define the pump outlet or the pump inlet, the second lateral circular ring opening being provided separate from the first lateral circular ring opening,', 'wherein,', 'the pump outlet and the pump inlet are arranged coaxially to each other., 'a fluid connector comprising,'}141. The automotive electrical oil pump as recited in claim , wherein , the fluid connector is ...

Electric motor, pump device using electric motor, and stator

An electric motor, and the electric motor includes a stator core provided on a stator, a plurality of teeth provided on the stator core, a coil wound body attached to the tooth, an inner flange portion provided at an inner diameter side of a bobbin, a first engagement portion provided at one end side in a width direction of the inner flange portion, and a second engagement portion provided at the other end side in the width direction of the inner flange portion, the first engagement portion being provided to be located at an outer side in a diameter direction than the second engagement portion of the adjacent coil wound body in a moving direction, the second engagement portion being provided to be located at an outer side in a diameter direction than the first engagement portion of the adjacent coil wound body in a moving direction.

Drilling motor having sensors for performance monitoring

An apparatus includes a sensor assembly disposable in a drill string proximate a drilling motor. The sensor assembly has a first pressure sensor in fluid communication with an upstream side of a rotor in the drilling motor, a second pressure transducer in fluid communication with a downstream side of the rotor and a rotational speed sensor coupled to the rotor. A processor is in signal communication with the first pressure transducer, the second pressure transducer and the rotational speed sensor.

Pump apparatus

A pump apparatus includes a motor that rotates a shaft, and a pump that is driven by the shaft, suctions an oil, and delivers the oil to the motor. The pump apparatus includes a first flow channel to suction an oil into the pump through a suction port provided in a pump cover using a negative pressure in the pump, a second flow channel to deliver an oil to the inside of the motor through a delivery port provided in a pump body using pressurization of the pump, a third flow channel provided between a stator and a rotor, a fourth flow channel provided between the stator and a housing, and a fifth flow channel to discharge an oil inside the motor through a discharge port provided in the housing.

OIL DELIVERY SYSTEM FOR THE LUBRICATION OF A CHAINSAW

The disclosure provides a method of oil delivery to a chainsaw chain blade using a gerotor pump in sequence with flow control valves to provide lubrication to the chain blade to reduce friction with the chainsaw bar guide and prevent overheating and damage to the chain blade or guide bar. 1. A fluid lubrication system , which comprises:a fluid reservoir;a gerotor pump; anda system of fluid feed lines, wherein the fluid feed lines establish fluid communication between the fluid reservoir, the gerotor pump and a point of application, and wherein the gerotor pump is configured to pump a fluid from the fluid reservoir, through the system of fluid feed lines and to the point of application.2. The fluid lubrication system described in including one or more valves intervening between one or more of the gerotor pump claim 1 , the fluid reservoir and the point of application claim 1 , including but not limited to one or more of a gate valve claim 1 , a pressure relief valve and a venturi valve.3. The fluid lubrication system of claim 1 , wherein the gerotor pump comprises:a pump housing, having a fluid inlet port and a fluid outlet port;a gerotor pump motor, having a motor rod that extends from the motor into the pump housing;an inner gerotor gear, having n number of gear teeth, wherein the inner gerotor gear is secured to the motor rod, such that it will spin with the motor rod;{'b': '1', 'an outer gerotor gear, having n+ number of gear notches, wherein the inner gerotor gear is positioned within the outer gerotor gear, such that it will transfer the spinning motion of the motor rod to the outer gerotor gear;'}one or more fluid pocket recesses formed by the pump housing and configured to one or more of increase the size of fluid enclosures created by the spinning gerotor gears and deliver lubrication between the gerotor gears and the pump housing;a fluid-tight seal positioned around the inner and outer gerotor gears inside the pump housing.4. The fluid lubrication system of ...

Oil Well Pump Apparatus

An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body that is sized and shaped to be lowered into the production tubing string of the oil well. A working fluid is provided that can be pumped into the production tubing. A prime mover is provided for pumping the working fluid. A flow channel into the well bore enables the working fluid to be circulated from the prime mover via the production tubing to the tool body at a location in the well and then back to the wellhead area. A pumping mechanism is provided on the tool body, the pumping mechanism including upper and lower spur gear or gears. The upper spur gear is driven by the working fluid. The lower spur gear is rotated by the first spur gear. The upper and lower spur gears are connected with a common shaft. If upper pairs and lower pairs of spur gears are employed, each upper and lower gear are connected via a common shaft. The tool body has flow conveying portions that mix the working fluid and the produced oil as the oil is pumped. The pumping mechanism transmits the commingled fluid of oil and working fluid to the wellhead area where they are separated and the working fluid recycled. 1. An oil pump apparatus for pumping oil from an oil well having a wellhead and a well bore with casing and a production tubing string , comprising:a) a tool body that is sized and shaped to be lowered into the production tubing string of an oil well;b) a casing and production tubing;c) a working fluid that can be pumped into the production tubing;d) a prime mover for pumping the working fluid;e) a flow channel in the well bore that enables the working fluid to be circulated from the prime mover via the production tubing to the tool body at a location in the well and then back to the wellhead area;f) a pumping mechanism on the tool body, the pumping mechanism including a first impeller that is driven by the working fluid and a second impeller that is rotated by the first impeller, the second ...

TOLERANCE INDEPENDENT CRESCENT INTERNAL GEAR PUMP

A crescent internal gear pump includes a front cover, an end cover, a ring gear and a pinion gear disposed within a gear housing in an eccentric, intermeshing relationship. The housing is disposed intermediate the front cover and the end cover. A crescent is disposed radially intermediate the ring gear and the pinion gear. The crescent partially extends into a correspondingly shaped slot in the end cover. The gear housing, the ring gear, and the pinion gear can have substantially the same thickness. A shim can be disposed intermediate the end cover and the gear housing for establishing a desired clearance therebetween. 1. A crescent internal gear pump comprising:a front cover;an end cover having a slot therein;a gear housing disposed between the front cover and the end cover;a ring gear and a pinion gear disposed within the gear housing in an eccentric, intermeshing relationship; anda crescent disposed radially intermediate the ring gear and the pinion gear;wherein a portion of the crescent extends into the slot in the end cover.2. The crescent internal gear pump of claim 1 , wherein the crescent is moveable into and out of the slot.3. The crescent internal gear pump of claim 1 , wherein a front face of the crescent engages with the front cover.4. The crescent internal gear pump of claim 1 , wherein the crescent is press-fit into the slot and forms a fluid tight seal with the end cover.5. The crescent internal gear pump of claim 1 , wherein the slot has a cross-sectional shape that is substantially the same as a cross-sectional shape of the crescent.6. The crescent internal gear pump of claim 1 , further comprising a biasing member disposed with the slot and configured to forcibly hold the crescent in engagement with the front cover.7. The crescent internal gear pump of claim 1 , further comprising a shim disposed intermediate the gear housing and the end cover.8. The crescent internal gear pump of claim 7 , wherein the shim has a thickness selected to establish a ...

BI-HELICAL TOOTHED WHEEL WITH VARIABLE HELIX ANGLE AND NON-ENCAPSULATING TOOTH PROFILE FOR HYDRAULIC GEAR APPARATUSES

The invention relates to a bi-helical toothed wheel () with non-encapsulating profile () for hydraulic gear apparatuses (), of the type bound to a support shaft () to form a driving or driven wheel of said hydraulic apparatus and comprising a plurality of teeth () extended with variable helix angle with continuous function in the longitudinal direction, wherein the teeth profile () keeps a shape continuity in each cross section thereof. More particularly, each tooth of the toothed wheel is longitudinally split in three zones: initial (A), central (B) and terminal (C) zones, and the central zone (B) has a variable helix angle, while the initial (A) and terminal (c) zones have a constant helix angle. The invention allows to manufacture contra-rotating rotors, having a non-encapsulating profile and a helix shape such as to suppress the angular point at the center of the rotors themselves and therefore all the problems related to their machining. 1. A bi-helical toothed wheel with non-encapsulating profile for hydraulic gear apparatuses , said bi-helical toothed wheel being bound to a support shaft to form a driving or driven wheel of said hydraulic apparatus and comprising a plurality of teeth extended with variable helix angle with continuous function in the longitudinal or axial tooth direction , wherein the teeth profile keeps a shape continuity in each cross section thereof.2. A toothed wheel according to claim 1 , wherein each tooth is longitudinally split in three zones: initial claim 1 , central and terminal zones claim 1 , where the initial and terminal zones have a symmetrical helix angle.3. A toothed wheel according to claim 1 , wherein the helix angle of the tooth is variable over the whole gear length.4. A toothed wheel according to claim 1 , wherein each cross section coincides with the front profile of the toothed wheel.5. A toothed wheel according to claim 1 , wherein the helix development has a transition point between a right-handed portion and a left- ...

External Rotor Pump

An external rotor pump, in particular a hydraulic external rotor pump, has a first component which is configured as an outer rotor with a sliding surface which is arranged on the outer side thereof, and a second component which is configured as an opposing body and in which the outer rotor is mounted rotatably by way of the sliding surface thereof on an inner guide surface of the opposing body and is in mechanical contact with the inner guide surface. An inner rotor which is mounted such that it can be rotated eccentrically with respect to the outer rotor is provided. One of the rotors can be driven, in order to be set into a rotational movement, and the rotors are coupled to one another such that, when the drivable rotor is driven, the other rotor is likewise set into a rotational movement as a result, in order to convey fluid from a suction region to a pressure region of the external rotor pump. The sliding surface or the guide surface has a surface structure which has a load-bearing region and a non-load-bearing region which is depressed in contrast with the former. The result is that the non-load-bearing region is saved from contact between the guide surface and the sliding surface which is mounted thereon. 1. An external rotor pump , comprising:a first component which is constructed as an external rotor and which has a sliding face which is arranged on an outer side thereof;a second component which is constructed as a counter-rotation member and in which the external rotor is rotatably supported by way of the sliding face thereof on an inner guiding face of the counter-rotation member and is in mechanical contact therewith; andan internal rotor which is rotatably supported eccentrically relative to the external rotor;whereinone of the rotors is drivable in order to be caused to carry out a rotational movement and the rotors are coupled to each other such that, when the drivable rotor is driven, the other rotor is thereby also caused to carry out a rotational ...

Pump assembly having integrated controller and motor with internal active cooling

A pump assembly and a method for cooling the same are disclosed. The pump assembly includes a pump, a controller, and a driven electric motor. The pump and the electric motor are on opposing axial sides of the controller. The assembly also has a heat conductive plate positioned between the pump and the controller that conducts heat from the controller. A transfer passage is provided for receiving pressurized fluid output from the pump and to direct the fluid along and in contact with the heat conductive plate to conduct heat therefrom into the pressurized fluid. An outlet passage communicates with the assembly outlet to discharge the pressurized fluid.

MAGNETICALLY ENGAGED PUMP

A magnetically engaged pump includes a pump housing with a rotatable magnetic drive assembly, a cylindrical canister and a rotatable driven magnet assembly. This magnetic coupling is associated with a pump rotor and a laterally positioned gear wheel to define a gear pump. This magnetic coupling is alternatively associated with a pump rotor with an impeller to define a centrifugal pump. Either pump includes a stationary shaft to mount the driven magnet assembly and pump rotor. A rotatable carrier with bushings and thrust bushings coaxially supports the rotatable driven magnet assembly and pump rotor. 1. A magnetically engaged pump comprisinga pump housing including a shaft in the housing;a magnetic coupling in the pump housing including a rotatable magnetic drive, a rotatable driven magnet assembly inwardly of the rotatable magnetic drive and a cylindrical canister extending between the rotatable magnetic drive and the rotatable driven magnet assembly, the rotatable driven magnet assembly having a concentric cavity;a pump rotor rotatable with the rotatable driven magnet assembly and including an axial passage;an inner impeller wheel rotatable with the rotatable driven magnet assembly and axially removable through the pump rotor, the pump rotor including an annular impeller wheel having continuity of flow with the inner impeller wheel;a carrier including a bore rotatably disposed about the shaft and at least one plain bushing in the bore bearing on the shaft, the carrier being within the concentric cavity and fitting through the axial passage for removal from the pump with the pump rotor engaged with the rotatable driven magnet assembly and the rotatable driven magnet assembly magnetically engaged with the rotatable magnetic drive.2. The magnetically engaged pump of claim 1 , the rotatable carrier being axially removable through the pump rotor from the rotatable driven magnet assembly with the inner impeller wheel and the shaft.3. The magnetically engaged pump of ...

SPROCKET GEROTOR PUMP

A sprocket gerotor pump includes an outer gerotor gear configured to rotate about a first axis. The outer gerotor gear includes an outer gear body including a plurality of internal gear teeth extending from the outer gear body toward the first axis. The sprocket gerotor pump includes an inner gerotor gear configured to rotate about a second axis. The inner gerotor gear includes an inner gear body and a plurality of external gear teeth extending from the inner gerotor gear away from the second axis. The external gear teeth mesh with the internal gear teeth. Rotating the outer gerotor gear causes rotation of the inner gerotor gear. The sprocket gerotor pump further includes a sprocket integrally coupled with the outer gerotor gear such that the sprocket and the outer gerotor gear collectively form a one-piece structure. The sprocket is driven by a chain. 1. A sprocket gerotor pump , comprising:an outer gerotor gear configured to rotate about a first axis, wherein the outer gerotor gear includes an outer gear body including a plurality of internal gear teeth extending from the outer gear body toward the first axis;an inner gerotor gear configured to rotate about a second axis, wherein the second axis is spaced apart from the first axis, the inner gerotor gear includes an inner gear body and a plurality of external gear teeth extending from the inner gear body away from the second axis, and the plurality of external gear teeth meshes with the plurality of the internal gear teeth such that rotation of the outer gerotor gear causes rotation of the inner gerotor gear; anda sprocket integrally coupled with the outer gerotor gear such that the sprocket and the outer gerotor gear collectively form a one-piece structure.2. The sprocket gerotor pump of claim 1 , wherein the sprocket includes a ring and a plurality of external sprocket teeth extending from the ring.3. The sprocket gerotor pump of claim 2 , wherein the ring is directly coupled to the outer gear body claim 2 , the ...

INTERNAL GEAR PUMP

In an internal gear pump , a diameter of a base circle is set to A mm, a radius of a rolling circle is set to b mm, a diameter of a locus circle is set to C mm, and an amount of eccentricity is set to e mm. A trochoidal curve T is drawn by rolling the rolling circle along the base circle without slipping and by using a locus of a fixed point distant from a center of the rolling circle by e. A tooth profile of an inner rotor having n teeth is formed based on an envelope of a group of the locus circles each having a center on the trochoidal curve T. A pump rotor is formed by combining the inner rotor with an outer rotor having (n+1) teeth. A tooth-profile curve of the inner rotor satisfies the following expression (1). Because K<1 is satisfied, cusps s are not formed at opposite edges of each addendum of the inner rotor . 2. The internal gear pump according to claim 1 , wherein 0.2≦K≦0.97 is satisfied.3. The internal gear pump according to claim 2 , wherein 0.7≦K≦0.96 is satisfied.5. The internal gear pump according to claim 4 , wherein 0.5≦K1≦2 is satisfied.7. The internal gear pump according to claim 6 , wherein 0.1≦K2≦0.7 is satisfied.9. The method for forming a tooth profile of an inner rotor of an internal gear pump according to claim 8 , wherein 0.2≦K≦0.97 is satisfied.10. The method for forming a tooth profile of an inner rotor of an internal gear pump according to claim 9 , wherein 0.7≦K≦0.96 is satisfied.12. The method for forming a tooth profile of an inner rotor of an internal gear pump according to claim 11 , wherein 0.5≦K1≦2 is satisfied.14. The method for forming a tooth profile of an inner rotor of an internal gear pump according to claim 13 , wherein 0.1≦K2≦0.7 is satisfied. The present invention relates to an internal gear pump equipped with a pump rotor constituted of a combination of an inner rotor whose tooth profile is formed by utilizing a trochoidal curve and an outer rotor having one tooth more than the inner rotor. Specifically, the present ...

GEAR PUMP

In a gear pump, an outer rotor and an inner rotor are disposed in a rotor installation chamber defined by a pump body and a pump cover. A suction port groove and a discharge port groove are formed in at least one of the pump body and the pump cover. A narrowing portion is formed at a portion of a radially outer side wall portion of the suction port groove, the portion being close to a terminal end wall portion of the suction port groove. The narrowing portion narrows the groove width in the radial direction. A pressurizing region that pressurizes oil in the gear chamber is formed between the narrowing portion and the terminal end wall portion. 1. A gear pump comprising:a pump body;a pump cover;an outer rotor having a plurality of internal teeth; andan inner rotor having external teeth meshed with the internal teeth and driven to be rotated, whereina rotor installation chamber is defined by the pump body and the pump cover,the outer rotor and the inner rotor are disposed in the rotor installation chamber, and gear chambers are defined between the internal teeth of the outer rotor and the external teeth of the inner rotor,a suction port groove that forms a suction port and a discharge port groove that forms a discharge port are formed in at least one of the pump body and the pump cover,a narrowing portion is formed at a portion of a radially outer side wall portion of the suction port groove, the portion being close to a terminal end wall portion of the suction port groove, the narrowing portion bulging toward a radially inner side wall portion of the suction port groove to narrow a groove width in a radial direction, anda pressurizing region is formed between the narrowing portion and the terminal end wall portion, the pressurizing region pressurizing oil in the gear chamber that is defined between the internal tooth and the external tooth located at a position on the suction port groove side and closest to the terminal end wall portion.2. The gear pump according to ...

GEARED FLUID MACHINE

A geared fluid machine has a machine housing and first and second intermeshing gearwheels that are rotatably mounted in the machine housing with respect to an axis of rotation and are arranged at least partially contacting by their end faces. At least one axial washer is arranged in the machine housing with axial play and has on a distal side a pressure field surrounded by a circumferential seal. The seal contacts and seals against a first bearing surface of the axial washer, and also contacts and seals against a second bearing surface of the machine housing. The seal is at least partially U-shaped in section and has a first seal limb contacting the first bearing surface, a second seal limb contacting the second bearing surface, and a connecting limb connecting the first and second seal limbs. 1. A geared fluid machine comprising:a machine housing;a first gearwheel and a second gearwheel which meshes with the first gearwheel, the first gearwheel and the second gearwheel each rotatably mounted in the machine housing with respect to an axis of rotation and each arranged at least partially contacting by end faces thereof at least one axial washer arranged in the machine housing with axial play, the same having on its side which faces away from the gearwheels a pressure field surrounded by a circumferential seal which contacts and seals against a first bearing surface of the axial washer on one side thereof, and on the other side contacts and seals against a second bearing surface of the machine housing, wherein the seal is at least partially U-shaped in section, and has a first seal limb lying against the first bearing surface, a second seal limb lying against the second bearing surface, and a connecting limb connecting the first seal limb and the second seal limb.2. The geared fluid machine according to claim 1 , wherein the seal is made of a uniform claim 1 , elastic material claim 1 , and/or is designed with no support ring.3. The geared fluid machine according to ...

ROTARY PUMP AND BRAKING SYSTEM HAVING THE SAME

A rotary pump has a linear groove formed on an end surface of a second side plate of an outer rotor. Thereby, it becomes possible to generate a force for pushing back the outer rotor to a sealing member side, and thus it becomes possible to reduce load applied to the second side plate. As a result, contact resistance between the outer rotor and the second side plate becomes smaller, and smoother pumping operation becomes possible. Further, since the force for pushing back the outer rotor to the first sealing member side is generated in the linear groove, it is possible to reduce an amount of decrease in a contacting area with the outer rotor and the second side plate, thereby reducing an amount of wear of the outer rotor and the second side plate. 1. A rotary pump comprising:a rotating unit having an outer rotor provided with internal teeth on an inner periphery thereof, an inner rotor provided with external teeth on an outer periphery thereof and which rotates around a drive shaft as an axis, and a plurality of gaps formed between the meshed internal teeth and the external teeth;a casing, formed to cover the rotating unit, having a first side plate disposed on one axial end surface side of the rotating unit, a second side plate disposed on another axial end surface side of the rotating unit which has a contacting surface to axial end surfaces of the inner rotor and the outer rotor that forms a mechanical seal, and a central plate disposed so as to surround an outer periphery of the outer rotor;an inlet port for sucking fluid into the rotating unit and a discharge port for discharging the fluid from the rotating unit, both provided in the casing;a first sealing member that divides spaces between the rotating unit and the first side plate into a low-pressure part connected to the inlet port and a high-pressure part connected to the discharge port;a second sealing member that divides a gap formed between the outer periphery of the outer rotor and the central plate ...

Temperature regulated components having cooling channels and method

A tool having a temperature management arrangement includes a single piece unitary body, a channel within the body having a geometric discontinuity that forms a vortex chamber. A tool including a temperature management arrangement having a geometric discontinuity configured as a vortex chamber formed simultaneously with formation of a body. A method for producing a thermal management arrangement comprises additively growing the arrangement while selectively forming a channel in the arrangement, the channel comprising a geometric discontinuity formed as a vortex chamber.

INTERNAL GEAR PUMP

An internal gear pump includes an outer rotor, an inner rotor, and a pump housing. The inner rotor is rotatably disposed inside the outer rotor having internal teeth, forms pump chambers between the outer rotor and the inner rotor, and has external teeth. The pump housing has an inhalation port, a discharge port, and a first notch formed within a first land surface that extends from an end of the inhalation port to an end of the discharge port. The first notch is formed along a projection trajectory obtained by projecting a trajectory of chip points on the first land surface, where each chip point is a middle point between a corresponding one of the internal teeth and a corresponding one of the external teeth at a location at which the internal and external teeth substantially face each other above the first land surface and are closest to each other. 1. An internal gear pump comprising:an outer rotor that comprises internal teeth;an inner rotor that is rotatably disposed inside the outer rotor, that forms pump chambers configured to expand and contract repeatedly between the outer rotor and the inner rotor, and that comprises external teeth a number of which is one less than a number of the internal teeth, the external teeth being engageable with the internal teeth; anda pump housing that is formed of a case comprising a retention hollow in which the outer rotor is rotatably retained and a cover that blocks an opening of the retention hollow and that has an inhalation port via which a fluid is to be inhaled into the pump chambers and a discharge port via which the fluid is to be discharged from the pump chambers,wherein the pump housing has a first notch formed within a first land surface that extends from an end of the inhalation port to an end of the discharge port, and the internal teeth and the external teeth are in sliding contact with the first land surface, andwherein the first notch is formed along a projection trajectory obtained by projecting a trajectory ...

ELECTRIC OIL PUMP

An electric oil pump includes a motor unit having a shaft and a pump unit which is disposed on a front side of the motor unit, is driven by the shaft, and discharges oil. The motor unit includes a rotor, a stator, and a resin housing in which the rotor and the stator are housed. The pump unit includes a pump rotor provided at the shaft and a pump housing having a housing part in which the pump rotor is housed. The pump housing includes the pump body that is supported by the shaft via a sliding bearing and a pump cover that covers a front side of the pump body. A rear side of the shaft is supported by the resin housing via a rolling bearing and a front side of the shaft that protrudes from the motor unit is supported by a pump body via the sliding bearing. 1. An electric oil pump comprising:a motor unit having a shaft centered on a central axis that extends in an axial direction of the shaft; anda pump unit which is disposed on one side of the motor unit in the axial direction, is driven by the motor unit via the shaft, and discharges oil, a rotor that is fixed to an other side of the shaft in the axial direction;', 'a stator that is disposed outside the rotor in a radial direction; and', 'a resin housing in which the rotor and the stator are housed,, 'wherein the motor unit comprises'} a pump rotor installed to the shaft that protrudes from the motor unit to the one side in the axial direction; and', 'a pump housing having a housing part in which the pump rotor is housed,', a pump body that is supported by the shaft via a sliding bearing; and', 'a pump cover that covers one side of the pump body in the axial direction,, 'wherein the pump housing comprises'}], 'wherein the pump unit comprises'}wherein the other side of the shaft in the axial direction is supported by the resin housing via a rolling bearing, andwherein one side of the shaft that protrudes from the motor unit in the axial direction is supported by the pump body via the sliding bearing.2. The electric ...

OIL PUMP

An oil pump includes: a pump housing having a rotor accommodation space in an inner portion of the pump housing; a rotor accommodated in the rotor accommodation space; a shaft portion disposed inside the rotor; and a passage which is provided to straddle at least one of the pump housing and the rotor and the shaft portion and which communicates a pump chamber which is formed by the rotor inside the pump housing with an outside of the pump housing. 1. An oil pump comprising:a pump housing having a rotor accommodation space in an inner portion of the pump housing;a rotor accommodated in the rotor accommodation space;a shaft portion disposed inside the rotor; anda passage which is provided to straddle at least one of the pump housing and the rotor and the shaft portion and which communicates a pump chamber which is formed by the rotor inside the pump housing with an outside of the pump housing.2. The oil pump according to claim 1 ,wherein the passage includes a first passage portion which is provided to straddle at least one of the pump housing and the rotor and the shaft portion and extends in a direction intersecting an axial direction of the shaft portion, and a second passage portion which is provided in the shaft portion and extends in the axial direction.3. The oil pump according to claim 1 ,wherein the shaft portion includes an opening/closing mechanism which opens and closes the passage.4. The oil pump according to claim 2 ,wherein the shaft portion includes a rotary shaft which rotationally drives the rotor,the rotary shaft includes an opening/closing mechanism which opens and closes the passage,the opening/closing mechanism includes an opening/closing valve which includes a sealing wall and a communication bore which is disposed at a position deviated in the axial direction of the rotary shaft with respect to the sealing wall and is capable of moving in the axial direction of the rotary shaft, andthe opening/closing mechanism is configured to close the ...

OIL PUMP

An oil pump has a pump body, a pump cover, an outer rotor, and an inner rotor. The pump body includes a rotor chamber, a first inlet port, a first outlet port, a first inlet passage, a first outlet passage, a relief valve, a relief chamber formed on a discharge side of the relief valve, and a first oil return passage formed from the relief chamber to the first inlet passage. The pump cover has a second oil return passage. The first oil return passage is formed in an inner circumferential support wall of the rotor chamber as a groove-like recess and opens along an outer circumferential surface of the outer rotor. A support protrusion is formed near a portion where the second oil return passage is formed to support a front surface, in a radial direction, of the outer rotor. 1. An oil pump , comprising:a pump body;a pump cover;an outer rotor; andan inner rotor,the pump body comprising a rotor chamber having an inner circumferential support wall on an inner circumferential side, a first inlet port and a first outlet port formed in the rotor chamber, an inlet passage communicating with the first inlet port, an outlet passage communicating with the first outlet port, a relief valve allowing oil to flow from the outlet passage to the inlet passage by relieving pressure, a relief chamber formed on a discharge side of the relief valve, and a first oil return passage formed from the relief chamber to the inlet passage;the pump cover including a second inlet port and a second outlet port, and a second oil return passage facing and communicating with the first oil return passage;the outer rotor being supported by the inner circumferential support wall of the rotor chamber; andthe inner rotor being arranged on an inner circumferential side of the outer rotor, whereinthe first oil return passage is formed in the inner circumferential support wall as a groove-like recess that opens along an outer circumferential surface of the outer rotor, and a support protrusion is formed near a ...

INTERNAL GEAR PUMP

An internal gear pump is a return feed pump for a hydraulic vehicle braking system. The internal gear pump includes a filling part formed by two flexible sheet metal parts connected by an axial sealing element that is vulcanized in place and, in side view, is U-shaped. The axial sealing element is configured to improve the efficiency of the internal gear pump and allows large production tolerances. 1. An internal gear pump , comprising:an internally toothed annulus;an externally toothed pinion arranged eccentrically in the annulus and configured to mesh with the annulus in one section of a circumference;a crescent-shaped free space between the pinion and the annulus opposite said one section of the circumference in which the pinion meshes with the annulus; anda filler piece arranged in the free space, and having an inner part and an outer part,wherein the inner part has an inner side on which tooth tips of teeth of the pinion rest,wherein the outer part has an outer side on which tooth tips of teeth of the annulus rest, andwherein an axial sealing element is arranged between the inner part and the outer part.2. The internal gear pump as claimed in claim 1 , wherein one of the inner part and the outer part of the filler piece is a bent sheet metal part.3. The internal gear pump as claimed in claim 1 , wherein the axial sealing element is configured to press the inner part of the filler piece elastically inward against the tooth tips of the teeth of the pinion and is configured to press the outer part of the filler piece elastically outward against the tooth tips of the teeth of the annulus.4. The internal gear pump as claimed in claim 1 , wherein the axial sealing element has a cavity configured to communicate with a pressure side of the internal gear pump.5. The internal gear pump as claimed in claim 4 , wherein:the axial sealing element is U-shaped and is closed at an end facing a suction side of the filler piece, andthe axial sealing element includes a first leg ...

CYLINDRICAL SYMMETRIC VOLUMETRIC MACHINE

A cylindrical symmetric volumetric machine, includes a housing () with two co-operating rotors () therein, namely an outer rotor () mounted rotatably in the housing () and an inner rotor () mounted rotatably in the outer rotor (), whereby a compression chamber () is located between the rotors (), which will move by rotation of the rotors () from the inlet side () of the rotors () to the outlet side () of the rotors (), wherein the inlet side () of the outer rotor () is provided with a ventilator (), to supply air to the compression chamber (). 1126662668666696696696128ababaababaabbabaa. A cylindrical symmetric volumetric machine , which machine () comprises a housing () with two co-operating rotors ( , ) therein , including an outer rotor () mounted rotatably in the housing () and an inner rotor () mounted rotatably in the outer rotor () , whereby a compression chamber () is located between the rotors ( , ) , which will move by rotation of the rotors ( , ) from the inlet side () of the rotors ( , ) to the outlet side () of the rotors ( , ) , wherein the inlet side () of the outer rotor () is provided with a ventilator () , to supply air to the compression chamber ().26139126aaa. The cylindrical symmetric volumetric machine according to claim 1 , wherein the outer rotor () is provided with an attachment () on its inlet side () in which the ventilator () is built in claim 1 , and which is attached to the outer rotor ().3621713a. The cylindrical symmetric volumetric machine according to claim 2 , wherein the outer rotor () is mounted rotatably in the housing () by means of a bearing () on or to said attachment ().41212. The cylindrical symmetric volumetric machine according to claim 1 , wherein the ventilator () is a radial ventilator ().51212a. The cylindrical symmetric volumetric machine according to claim 4 , wherein an additional axial ventilator () is provided in series with said radial ventilator ().61212. The cylindrical symmetric volumetric machine according to ...

MOTOR

A motor includes a rotor having a shaft centered on a central axis that extends in an axial direction, a stator which is disposed to face the rotor and includes a plurality of coils, a housing in which the rotor and the stator are housed, and a bus bar assembly that is disposed on one side of the shaft in the axial direction, wherein the bus bar assembly includes a plurality of bus bars that are electrically connected to the plurality of coils of the stator and a bus bar holder that holds the plurality of bus bars, and wherein at least one bus bar among the plurality of bus bars is placed on a disposition surface part provided on the bus bar holder and extends in a direction crossing the central axis. 1. A motor comprising:a rotor having a shaft centered on a central axis that extends in an axial direction of the shaft;a stator which is disposed to face the rotor and comprises a plurality of coils;a housing in which the rotor and the stator are housed; anda bus bar assembly that is disposed on one side of the shaft in the axial direction, a plurality of bus bars that are electrically connected to the plurality of coils of the stator and', 'a bus bar holder that holds the plurality of bus bars, and, 'wherein the bus bar assembly comprises'}wherein at least one bus bar among the plurality of bus bars is placed on a disposition surface part provided on the bus bar holder and extends in a direction crossing the central axis.2. The motor according to claim 1 ,wherein the at least one bus bar linearly extends on the disposition surface part.3. The motor according to claim 1 ,wherein the bus bar holder is disposed at a position crossing the central axis.4. The motor according to claim 1 ,wherein the housing is a resin housing, andwherein the bus bar assembly is integrated with the resin housing by insert molding.5. The motor according to claim 4 ,wherein the bus bar holder has a through-hole that opens to both sides in the axial direction, andwherein the bus bar holder is ...

ELECTRIC OIL PUMP

An electric oil pump includes a motor unit having a shaft centered on a central axis that extends in an axial direction of the shaft and a pump unit which is disposed on a front side of the motor unit, is driven by the motor unit, and discharges oil. The motor unit includes a rotor that is fixed on a rear side of the shaft, a stator that is disposed outside the rotor in a radial direction, a resin housing in which the rotor and the stator are housed, and a connector assembly that is disposed outside the resin housing in the radial direction. The connector assembly is integrally molded with the resin housing. The pump unit includes a pump rotor installed to the shaft that protrudes from the motor unit and a pump housing in which the pump rotor is housed. 1. An electric oil pump comprising:a motor unit having a shaft centered on a central axis that extends in an axial direction of the shaft; anda pump unit which is disposed on one side of the motor unit in the axial direction, is driven by the motor unit via the shaft, and discharges oil, a rotor that is fixed on an other side of the shaft in the axial direction;', 'a stator that is disposed outside the rotor in a radial direction of the rotor;', 'a resin housing in which the rotor and the stator are housed; and', 'a connector assembly that is positioned outside the resin housing in the radial direction,', 'wherein the connector assembly is integrally molded with the resin housing, and, 'wherein the motor unit comprises'} a pump rotor installed on the shaft that protrudes from the motor unit to the one side in the axial direction; and', 'a pump housing in which the pump rotor is housed., 'wherein the pump unit comprises'}2. The electric oil pump according to claim 1 ,wherein the resin housing has a substrate housing chamber which is disposed on the other side of the shaft in the axial direction and in which a circuit board is housed.3. The electric oil pump according to claim 2 ,wherein the connector assembly ...

TWO-LIQUID-TYPE, DOUBLE-ROW STRUCTURED TROCHOID PUMP FOR TRANSFERRING HIGH-VISCOSITY LIQUIDS UNDER HIGH PRESSURE

Disclosed is a two-liquid-type, double-row structured trochoid pump for transferring high-viscosity liquids under high pressure. A front body, a first housing, a center body, a second housing, and a rear body are successively coupled to form an outer body, and a first idler is coupled to an inside of the first housing. A first rotor is inserted into the first idler, a second idler is coupled to an inside of the second housing, and a second rotor is inserted into the second idler. A shaft is coupled to penetrate the front body, the first housing, the center body, the second housing, the rear body, and the first and second rotors, and the shaft is connected to an external electric motor. Accordingly, transfer equipment can be reduced in size and weight through reduction of an attachment and a controller, which constitute the transfer equipment, into one device. 1. A trochoid pump comprising:a front body having a first discharge port formed on an outer surface thereof, a first discharge flow path formed on an inside thereof to communicate with the first discharge port, a first through-hole formed in the center thereof, and a plurality of fastening holes formed on a circumference of the first through-hole;a first housing coupled to the front body and having both open ends and a path formed in the center thereof;a first idler rotatably inserted into the path of the first housing and having a gear groove formed on an inside thereof;a first rotor inserted into the gear groove of the first idler with a diameter that is smaller than the gear groove, and having a plurality of gears formed on an outer periphery thereof;a center body coupled to the first housing through one side thereof and having a second through-hole formed in the center thereof to coincide with the first through-hole;a second housing coupled to the other side of the center body and having both open ends and a path formed in the center thereof;a second idler rotatably inserted into the path of the second ...

FUEL PUMP

A fuel pump includes: an outer gear; an inner gear that is meshed with the outer gear and includes a receiving hole; a rotatable shaft; a contact portion that is formed to be contactable with the receiving hole; and a pump housing that rotatably receives the outer gear and the inner gear and includes a first housing component and a second housing component, between which the inner gear is held in the axial direction. At least one of the receiving hole and the contact portion includes a tilt surface, which is tilted relative to the axis direction. When the rotatable shaft is rotated to a drive rotation side, the receiving hole contacts the contact portion through the tilt surface, so that the receiving hole is urged in a circumferential direction and is also urged toward the first housing component in the axial direction. 1. A fuel pump comprising:an outer gear that includes a plurality of internal teeth;an inner gear that includes a plurality of external teeth and is meshed with the outer gear while the inner gear is eccentric to the outer gear in an eccentric direction, wherein the inner gear includes a receiving hole that extends in an axial direction;a rotatable shaft that is rotationally driven;a contact portion that is formed to be contactable with the receiving hole, wherein the contact portion transmits a drive force from the rotatable shaft to the receiving hole to rotate the inner gear; anda pump housing that rotatably receives the outer gear and the inner gear and includes a first housing component and a second housing component, between which the inner gear is held in the axial direction, wherein:when the outer gear and the inner gear are rotated to a drive rotation side to increase and decrease volumes of a plurality of pump chambers, which are formed between the outer gear and the inner gear, fuel is sequentially drawn into and is sequentially discharged from the plurality of pump chambers;at least one of the receiving hole and the contact portion ...

Intelligent oil extraction system using all-metal screw pump

An intelligent oil extraction system using an all-metal screw pump includes: the all-metal screw pump, an oil collecting unit (43), and a steam generating unit (45); wherein an internal threaded curve surface and an external threaded curve surface of the all-metal screw pump are both tapered spiral structures with equal tapers; the oil extraction system comprises a lifting mechanism and monitoring and control mechanism; the monitoring and control mechanism comprises: a controller (34), a torque sensor (35), a flow sensor (36), a pressure sensor (39), a liquid level detector (38), and a backup power source (37); the controller (34) is electrically connected to the torque sensor (35), the flow sensor (36), the pressure sensor (39), the liquid level detector (38), the backup power source (37), a drive motor (48), a servo motor (33), a first valve and a second valve. The present invention can solve the technical problems such as short service life, high energy consumption, low pump efficiency, sand jam, and low intelligence of the conventional metal screw pumps.

Internal Gear Pump

An internal gear pump, in particular a hydraulic pump for a slip-controlled vehicle braking system, is configured to be pre-assembled. The internal gear pump includes a cartridge configured as a casing, which is configured to be inserted in a receptacle in a hydraulic block of a vehicle braking system. 1. An internal gear pump for a hydraulic vehicle brake system , comprising:a cartridge which is configured to act as a housing of the internal gear pump, and which is configured to be inserted into a receptacle for the internal gear pump;wherein the internal gear pump defines a premountable subassembly.2. The internal gear pump as claimed in claim 1 , further comprising:a pinion;a ring wheel; andan axial disk that is configured to laterally seal off a pump space defined by the internal gear pump, and that includes:an inside portion which bears against end faces of the pinion and of the ring wheel; andan outside portion facing away from the internal gear pump, which is exposed on the cartridge and which has a pressure field that enables a pressure connection of the internal gear pump.3. The internal gear pump as claimed in claim 1 , wherein:the cartridge further defines an orifice; andthe internal gear pump further defines a suction space that is open on one side and that is in communication with the orifice of the cartridge.4. The internal gear pump as claimed in claim 1 , wherein the receptacle for the internal gear pump is located in a surround housing.5. The internal gear pump as claimed in claim 4 , wherein the surround housing has a second receptacle for a second internal gear pump.6. The internal gear pump as claimed in claim 5 , wherein the internal gear pump has a common drive with the second internal gear pump. The invention relates to an internal gear pump for a hydraulic vehicle brake system, having the features of the preamble of claim . Such internal gear pumps are employed, instead of conventionally used piston pumps, in traction-controlled and/or power- ...

SPLIT POWER GEROTOR PUMP

A gerotor pump includes an inner gerotor, a wobble cancellation element, and an outer gerotor disposed radially between the inner gerotor and the wobble cancellation element. The inner gerotor includes a first outer peripheral surface with n first lobes equally spaced from one another in a circumferential direction, and n first depressions, each disposed between an adjacent pair of first lobes. The inner gerotor and the wobble cancellation element are coaxial. The wobble cancellation element includes a first inner peripheral surface with n+1 second lobes equally spaced from one another in the circumferential direction, and n+1 arcuate surfaces, each arranged between an adjacent pair of second lobes. The outer gerotor includes a second outer peripheral surface including n+1 outer depressions complementary to and arranged to engage the second lobes, and a second inner peripheral surface comprising n+1 inner depressions complementary to and arranged to engage the first lobes. 1. A gerotor pump , comprising: a first rotational axis; and', n first lobes equally spaced from one another in a circumferential direction; and', 'n first depressions, each disposed between an adjacent pair of first lobes;, 'a first outer peripheral surface, comprising], 'an inner gerotor, comprising a second rotational axis aligned with the first rotational axis such that the inner gerotor and the wobble cancellation element are coaxial; and', n+1 second lobes equally spaced from one another in the circumferential direction; and', 'n+1 arcuate surfaces, each arranged between an adjacent pair of second lobes; and, 'a first inner peripheral surface, comprising], 'a wobble cancellation element, comprising a second outer peripheral surface comprising n+1 outer depressions complementary to and arranged to engage the second lobes; and', 'a second inner peripheral surface comprising n+1 inner depressions complementary to and arranged to engage the first lobes., 'an outer gerotor disposed radially ...

Slurry Pump

In a rotor in rotor configuration, a pump has inward projections on an outer rotor and outward projections on an inner rotor. The outer rotor is driven and the projections mesh to create variable volume chambers. The outer rotor may be driven in both directions. In each direction, the driving part (first inward projection) of the outer rotor contacts a sealing surface on one side of an outward projection of the inner rotor, while a gap is left between a sealing surface of the other side of the outward projection and a second inward projection. The gap may have uniform width along its length in the radial direction, while in a direction parallel to the rotor axis it may be discontinuous or have variable size to create flow paths for gases. 1. A fluid transfer device comprising:a housing having an inward facing surface;an outer rotor secured for rotation about an outer rotor axis that is fixed in relation to the housing, the outer rotor having inward projections, the outer rotor being arranged to be driven in operation by a drive shaft;an inner rotor secured for rotation about an inner rotor axis that is fixed in relation to the housing, the inner rotor axis being inside the outer rotor, the inner rotor having outward projections, the outward projections in operation meshing with the inward projections to define variable volume chambers as the inner rotor and outer rotor rotate; fluid transfer passages in a portion of the housing to permit flow of fluid into and out of the variable volume chambers; andeach outward projection having a first sealing surface and a second sealing surface circumferentially opposed to each other for respective engagement with corresponding sealing surfaces of adjacent inward projections such that in an operational configuration in which the outer rotor is driven in a first direction, the first sealing surface seals against a first corresponding inward projection with a first gap between at least part of the second sealing surface and a ...

Cycloidal Pinwheel Pair with Uniform Contact and One-tooth Difference

Disclosed is a cycloidal pinwheel pair with uniform contact and one-tooth difference, comprising a stator and a rotor. Each gear tooth profile of the rotor has a modified recess provided symmetrically on both sides; the starting point (A) of the modified recess on one side of the gear tooth profile is located between a first point and a second point determined by locations of two limit positions, the end point (B) of the modified recess on the same side of the gear tooth profile is located between a third point and a fourth point determined by locations of two limit positions. By adopting the present disclosure, the internal leakage formed between high and low pressure chambers is effectively avoided, thereby significantly improving the volume efficiency and mechanical efficiency. Meanwhile, the present disclosure is extremely simple in structure and can be molded by one-time grinding with better manufacturability. 1. A cycloidal pinwheel pair with uniform contact and one-tooth difference , comprising a stator with pin teeth in interval distribution , and a rotor having gear teeth meshing with the pin teeth of said stator , and each gear tooth profile of the rotor has a modified recess provided symmetrically on both sides; wherein ,a starting point of said modified recess on one side of the gear tooth profile is located between a first point and a second point: when a predetermined pin tooth locates nearest to a meshing instant center, a first meshing point, formed by a pin tooth locating farthest to said meshing instant center and a corresponding gear tooth meshing therewith on a same side, is the first point; and when the predetermined pin tooth locates farthest to said meshing instant center, a second meshing point, formed by an adjacent pin tooth and a corresponding gear tooth meshing therewith on a same side, is the second point;an end point of the modified recess is located between a third point and a fourth point:when the predetermined pin tooth locates ...

Helical spring for a pump having an adjustable delivery volume

A pump having an adjustable delivery volume, including: a pump housing featuring a delivery chamber which includes a delivery chamber inlet for a fluid and a delivery chamber outlet for the fluid; a delivery member, which can be rotated within the delivery chamber, for delivering the fluid; an adjusting device featuring a setting structure, which is mounted such that it can move back and forth within the pump housing in order to adjust the delivery volume of the pump, and a helical spring for applying a spring force, which acts in a setting direction, to the setting structure, wherein the windings of the helical spring are enclosed by an envelope lying on the outside of the helical spring wherein the cross-sectional area of the envelope as measured transversely with respect to the longitudinal direction of the spring changes progressively in the longitudinal direction of the spring.

PUMP-MOTOR UNIT COMPRISING AN INTEGRATIVE HOUSING COVER

A pump-motor unit for delivering a fluid, for example gear oil and/or lubricating oil in motor vehicles, includes: a housing having a housing cover, an intermediate housing structure and a motor cover, wherein the housing cover and the intermediate housing structure define a delivery chamber axially on both end-facing sides and circumferentially in the radial direction; a delivery device featuring a delivery member, which can be rotated within the delivery chamber, for delivering the fluid; and a drive motor which is connected to the delivery device via a drive shaft, wherein the housing cover forms an accommodating well, and the drive motor and the intermediate housing structure are arranged in the accommodating well. 115.-. (canceled)16. A pump-motor unit for delivering a fluid , for example gear oil and/or lubricating oil in motor vehicles , comprising:a housing comprising a housing cover, an intermediate housing structure and a motor cover, wherein the housing cover and the intermediate housing structure define a delivery chamber axially on both end-facing sides and circumferentially in the radial direction;a delivery device featuring a delivery member, which can be rotated within the delivery chamber, for delivering the fluid;and a drive motor which is connected to the delivery device via a drive shaft,whereinthe housing cover forms an accommodating well, andthe drive motor and the intermediate housing structure are arranged in the accommodating well.17. The pump-motor unit according to claim 16 , wherein the intermediate housing structure defines the delivery chamber axially on an end-facing side and circumferentially claim 16 , and the housing cover defines the delivery chamber axially on an end-facing side.18. The pump-motor unit according to claim 16 , wherein the drive motor is arranged between the motor cover and the intermediate housing structure in the axial direction.19. The pump-motor unit according to claim 16 , wherein the drive motor is an electric ...

Ground drive apparatus for progressive cavity pumps

A ground drive apparatus for a progressive cavity pump in which a rotor of the pump is connected to a rod string and in which the rod string is connected to the polished rod. The ground drive apparatus has a motor with a hollow shaft, an upper sealing structure positioned above the motor and extending around the polished rod, and a well sealing structure positioned below the motor so as to the selectively in sealing and clamping relationship with the polished rod. The hollow shaft has an inner diameter greater than an outer diameter of the rotor and the rod string. The upper sealing structure includes a stationary sealing cap, a rotary sealing bushing extending around the stationary sealing cap, and a sealing ring interposed between the stationary sealing cap and the rotary sealing bushing. The well sealing structure has a housing with a piston slidably mounted in the housing.

CONTINUOUSLY VARIABLE TRANSMISSION AND TRANSMISSION SYSTEM

The invention relates to a continuously variable transmission and a transmission system comprising said continuously variable transmission, wherein the continuously variable transmission comprises a first gear pump and a second gear pump, wherein each gear pump comprises a first gear and a second gear meshing with the first gear over an overlap distance in an overlap direction parallel to the first gear axis, wherein each gear pump further comprises an adjustment member for adjusting the pump volume, wherein the adjustment member of the first gear pump and the adjustment member of the second gear pump are interconnected by a connecting member for adjusting the pump volume of the first gear pump and the pump volume of the second gear pump in an inverse correlation to each other. 140.. (canceled)41. A continuously variable transmission comprising:a first gear pump, and a second gear pump,wherein each gear pump comprises a fluid inlet, a fluid outlet and a pump volume between the fluid inlet and the fluid outlet,wherein each gear pump further comprises a first gear rotatable within the respective pump volume about a first gear axis and a second gear rotatable within the respective pump volume about a second gear axis and meshing with the first gear over an overlap distance in an overlap direction parallel to the first gear axis for displacing fluid through the respective pump volume from the respective fluid inlet to the respective fluid outlet,wherein the fluid outlet of the first gear pump is arranged in fluid communication with the fluid inlet of the second gear pump and the fluid outlet of the second gear pump is arranged in fluid communication with the fluid inlet of the first gear pump,wherein each gear pump further comprises an adjustment member for adjusting the pump volume of the respective gear pump,wherein the adjustment member of the first gear pump and the adjustment member of the second gear pump are interconnected by a connecting member that is arranged ...

Cardan shaft

A shaft ( 1 ) is shown comprising a shaft section ( 2 ) having an axis ( 3 ), a tooth geometry ( 4 ) at least at one end of said shaft section, said tooth geometry ( 4 ) having a first end ( 5 ) opposite said shaft section ( 2 ) and a second end ( 6 ) adjacent said shaft section ( 2 ), a number of teeth ( 7 ) distributed in circumferential direction around said axis ( 3 ), a bottom curve ( 9 ) between adjacent teeth ( 7 ), and an outer tooth curve ( 12 ), said bottom curve ( 9 ) having a positive slope from said first end ( 5 ) towards said shaft section ( 2 ) and a negative slope ( 14 ) at said second end ( 6 ). In such a shaft wear should be made as small as possible. To this end said bottom curve ( 9 ) comprises a section having a concave bottom curvature ( 15 ) between said positive slope and said negative slope.

Self-Fixing Stator Housing

A stator casing of an eccentric screw pump with an elastomer stator inner part including a plurality of shell-like casing segments and a production method for such a stator casing, with which the outlay for maintenance work can be reduced. According to the invention, casing segments adjacent in the longitudinal direction of the stator casing are disposed offset with respect to one another around the longitudinal axis of the stator casing, wherein each casing segment includes connection means and at least four casing segments engage with one another and form a composite. For the production of the stator casing, the casing segments are acted upon by an axial force component as a result of clamping, wherein the casing segments engage with one another, as a result of which a radial force component is generated and the composite is formed. 1. A stator casing of an eccentric screw pump with an elastomer stator inner part comprising a plurality of shell-like casing segments , characterised in that casing segments adjacent in the longitudinal direction of the stator casing are disposed offset with respect to one another around the longitudinal axis of the stator casing , wherein each casing segment comprises at least one connector and at least four casing segments engage with one another and form a composite.2. The stator casing according to claim 1 , at least one connector is also at least one positioner.3. The stator casing according to claim 1 , the casing segments adjacent in the longitudinal direction of the stator casing being disposed offset through 90° with respect to one another around the longitudinal axis of the stator casing.4. The stator casing according to claim 1 , the stator casing further comprising at least six casing segments.5. The stator casing according to claim 1 , the casing segments having different lengths.6. The stator casing according to claim 1 , the elastomer stator inner part further comprising holding elements which fix the stator casing.7. A ...

OIL PUMP

An oil pump is configured to include a rotor, a drive shaft that drives the rotor to rotate, a rotor chamber in which the rotor is contained, an inlet port and an outlet port each provided in the vicinity of the rotor chamber, and a pump cover. The pump cover is made of a resin. On a portion of an outer surface side of the pump cover corresponding to an inner portion, in which oil circulates, of the pump cover, a rib that has an erecting wall shape is provided. 1. An oil pump comprising:a rotor;a drive shaft that drives the rotor to rotate;a rotor chamber in which the rotor is contained;an inlet port and an outlet port each provided in the vicinity of the rotor chamber; anda pump cover, whereinthe pump cover is made of a resin, andon a portion of an outer surface side of the pump cover corresponding to an inner portion, in which oil circulates, of the pump cover, a rib that has an erecting wall shape is provided.2. The oil pump according to claim 1 , wherein the rib is formed along a shape of the outlet port.3. The oil pump according to claim 1 , wherein the rib is formed on the portion corresponding to a range disposed at a radial middle portion of the outlet port and extending claim 1 , along a direction of the rotation of the rotor claim 1 , to the vicinity of a terminal end of the outlet port or to the vicinity of a beginning end of the inlet port.4. The oil pump according to claim 1 , wherein the rib is formed to extend gradually radially away from a periphery of an insertion portion which is disposed at a radial middle portion of the outlet port and through which the drive shaft is inserted claim 1 , and a portion of the rib extending away has a linear shape.5. The oil pump according to claim 1 , wherein claim 1 , on an outer peripheral side or an inner peripheral side of the rib claim 1 , an auxiliary rib having a length claim 1 , in a direction of the rotation claim 1 , which is shorter than that of the rib is formed to be radially spaced apart by a ...

SCREW COMPRESSOR WITH A SHUNT-ENHANCED COMPRESSION AND PULSATION TRAP (SECAPT)

A shunt-enhanced compression and pulsation trap (SECAPT) for a screw compressor assists internal compression (IC), reduces gas pulsation and NVH, and improves off-design efficiency, without using a slide valve and/or a serial pulsation dampener. The SECAPT includes an inner casing (e.g., an integral part of the compressor chamber) and an outer casing (e.g., surrounding part of the inner casing near the compressor discharge port) forming at least one diffusing chamber with a nozzle and a feedback region that provides a feedback flow loop between the compressor chamber and the compressor discharge port. The SECAPT automatically compensates cavity pressure to meet different outlet pressures (hence eliminating under-compression and/or over-compression when the discharge port opens), partially recovers potential energy associated with the under-compression (UC), and traps and attenuates gas pulsations and noise before the discharge port opens. 1. A screw compressor , comprising:a compression chamber and a pair of meshing multi-helical-lobe rotors housed within the compression chamber, wherein the compression chamber has a flow suction port and a flow discharge port, wherein the rotors rotate to cooperatively form a series of moving cavities within the compression chamber for trapping and compressing fluid and propelling the trapped fluid from the suction port to the discharge port; anda shunt-enhanced compression and pulsation trap (SECAPT) apparatus including a diffusing chamber having a first flow nozzle providing fluid communication between the moving cavities inside the compression chamber and the diffusing chamber and having a feedback region providing fluid communication between the diffusing chamber and the discharge port, wherein the SECAPT defines a first stage of a feedback flow loop,wherein in operation the SECAPT achieves high gas pulsation and NVH reduction and improved compressor off-design efficiency without using a serial pulsation dampener or a slide ...

PUMPING ASSEMBLY TO FEED FUEL, PREFERABLY DIESEL FUEL, TO AN INTERNAL COMBUSTION ENGINE

A pumping assembly to feed fuel, preferably diesel fuel, to an internal combustion engine is provided with an electric gear pump () having two gears () mounted one inside the other, and of which one is an annular rotor () mounted rotatably on the inside of a stator () through the interposition of a support bearing (), which is delimited by a substantially cylindrical side wall () having at least one strip () of elastically deformable material which is substantially parallel to a rotation axis () of said rotor (). 13637672829332929423433373442433033434247. A pumping assembly to feed fuel to an internal combustion engine () , the pumping assembly comprising a high-pressure pump () to feed fuel to the internal combustion engine (); and a gear pump () to feed fuel to the high-pressure pump (); the gear pump () comprising an electric motor () having a stator () , an annular rotor () mounted on an inside of the stator () and coupled to the stator () in a rotary manner through the interposition of a support bearing () , and an outer gear () on on an inside of the rotor (); and an inner gear () , which is mounted on an inside of and is coupled to said outer gear (); the support bearing () being delimited by a substantially cylindrical side wall () coaxial to a rotation axis () of the rotor (); wherein the side wall () of the support bearing () comprises at least one strip () of elastically deformable material.2473033. A pumping assembly according to claim 1 , wherein the strip () of elastically deformable material is substantially parallel to the rotation axis () of the rotor ().342464746. A pumping assembly according to claim 1 , wherein the support bearing () is axially delimited by two opposite end faces (); the strip () of elastically deformable material extending between the two end faces ().447. A pumping assembly according to claim 1 , wherein the strip () of elastically deformable material is made of rubber.5434244303345. A pumping assembly according to claim 1 , ...