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33results about "Rotary piston engines" patented technology
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Fluid machine
PendingEP4768729A1Rotary/oscillating piston combinations for elastic fluidsRotary piston pumpsRotational axisCentre of rotation
According to the present invention, a fluid machine includes: a cylinder; a main shaft having a rotation center that coincides with an operation center of the cylinder; an eccentric shaft fixed to the main shaft, and configured to maintain and rotate at an eccentric interval (d) from the main shaft; a rotation / revolution shaft configured to rotate / revolve on the eccentric shaft; a rotary piston coupled integrally with the rotation / revolution shaft to rotate, and having a center that is eccentric to the rotation / revolution shaft by a distance (r) that is equal to the eccentric interval (d) (d=r); and a rotation ratio restraining device configured to restrain a rotation ratio of a main shaft rotational angular velocity (x) and a rotary piston rotational angular velocity (y) to 1:2.
Owner:BAEK KYOUNG IL
Rotary engine lubrication system
A rotary piston internal combustion engine includes an engine housing, an output shaft configured to rotate relative to the engine housing about an axis for transmitting power to parts to be operated, a rotary piston mounted eccentrically on the output shaft, a first bearing configured to support and facilitate rotation of the output shaft, the first bearing being sandwiched between a first pair of seals and a second bearing configured to support and facilitate rotation of the rotary piston, the second bearing being sandwiched between a second pair of seals, wherein the output shaft defines an internal path which has a first section to allow a lubricating substance to flow between the first bearing and the second bearing, in use.
Owner:COMPOUND ROTARY ENGINES
Fluid machine
According to the present invention, a fluid machine includes: a cylinder; a main shaft having a rotation center that coincides with an operation center of the cylinder; an eccentric shaft fixed to the main shaft, and configured to maintain and rotate at an eccentric interval (d) from the main shaft; a rotation / revolution shaft configured to rotate / revolve on the eccentric shaft; a rotary piston coupled integrally with the rotation / revolution shaft to rotate, and having a center that is eccentric to the rotation / revolution shaft by a distance (r) that is equal to the eccentric interval (d) (d=r); and a rotation ratio restraining device configured to restrain a rotation ratio of a main shaft rotational angular velocity (x) and a rotary piston rotational angular velocity (y) to 1:2.
Owner:BAEK KYOUNG IL
LOW-NOISE FRONT EXHAUST ENGINE
Owner:INGERSOLL RAND IND US INC
Internal combustion engine with tangential power transmission
ActiveDE502024001241D1Internal combustion piston enginesFree piston enginesInternal combustion engineControl theory
Owner:FNF INNOVATION SH P K
A small-displacement, high-speed cycloidal hydraulic motor
ActiveCN224282825UGuaranteed Strength and ReliabilityGuaranteed performance parametersRotary piston enginesHydraulic motorClassical mechanics
This utility model relates to a small-displacement, high-speed cycloidal hydraulic motor, belonging to the field of hydraulic transmission technology. The small-displacement motor features a grooved stepped hole at the end of the pressure balance plate that contacts the linkage shaft. The rotor-stator pair parameters are configured to ensure the motor's output displacement is less than 100 ml / r, the stator thickness is less than 10.5 mm, and the linkage shaft's meshing spline is a four-segment toothed structure. This utility model's small-displacement motor boasts a compact structure, stable and reliable small-displacement performance ensured by the rotor-stator pair parameters, and sufficient strength and good heat treatment processability thanks to the short spline of the linkage shaft.
Owner:ZHENJIANG DALI HYDRAULIC MOTOR
Hydraulic device and construction machine with an hydraulic motor
Owner:NABTESCO CORP
Rotary piston pump
The invention relates to a rotary piston pump (1) comprising in a spherical inner chamber (3) of a pump housing (2) with suction and pressure sides, a pair of rotary pistons (4, 5) in the form of universal-joint forks (6, 7) and a cross (8), between said forks (6, 7). The forks (6, 7) of the rotary pistons (4, 5) mesh with the cross (8) between them and form four pump chambers of variable volume when the rotary pistons (4, 5) and the cross (8) between are rotated. Each rotary piston (4, 5) is attached centrally to a hollow support shaft (13, 13', 14, 14') through a conical joint (10) and is fixed in place with a bolt joint (16) extending through a cavity (15) of the support shaft, where said support shaft is equipped with bearings (11, 12) and sealed.
Owner:SCANDIC IND OÜ
Method for producing a housing, and shell housing and housing for a rotary piston engine
A method for producing a housing for a rotary piston engine, a shell housing, and a housing for a rotary piston engine, are disclosed. A bushing of hard metal is pressed into a shell housing main body with a trochoidal raceway in such a manner that an external circumferential contour of the bushing bears in a sealing manner on the trochoidal raceway and the trochoidal raceway is cladded via the bushing.
Owner:KNAPP E MOBILITY GMBH
Rotor-stator assembly for a rotary engine, compressor or pump, a rotary engine and a lifting unit and device
PendingEP4768693A1Rotary/oscillating piston combinations for elastic fluidsCombination enginesRotary engineControl theory
A rotor-stator assembly for a rotary engine, compressor or pump, comprises a rotor (3, 4) arranged to rotate eccentrically in a stator chamber (1, 2), the geometry of the rotor (3, 4) being configured to provide a first fluid seal at a region of maximum proximity between the outer peripheral surface of the rotor (3, 4) and the inner peripheral wall of the stator chamber (1, 2), whereby a second fluid seal is provided by means of a component (15) rotating with the rotor, one end of which is permanently connected to the inner surface of the stator chamber (1, 2) by means of bearings and slides along the inner surface of the stator chamber (1, 2), and the other end of which is accommodated in a radially movable manner in a receptacle of the rotor (3, 4), the first and second fluid seals delimiting a first chamber portion and a second chamber portion of the stator chamber (1, 2).
Owner:STASSINOPOULOU EIRINI +1
Fluid machinery
PendingJP2026100771ARotary piston engines
This invention provides a fluid machine (positive displacement, rotary type) that is extremely easy to manufacture with high precision, can be produced using only circular and straight line machining, can be mass-produced at a significantly lower cost even with high precision, and exhibits little to no vibration. [Solution] The fluid machine consists of a main shaft having a rotation center that coincides with the operating center of the cylinder, an eccentric shaft fixed to the main shaft and rotating at an eccentric interval, a rotation and revolution axis that rotates while rotating and revolving on the eccentric shaft, a rotary piston 10 whose center is eccentric by the same distance as the eccentric interval and which is coupled with and rotates as an integrated unit with the rotation and revolution axis, and a rotation ratio constraint means that constrains the ratio of the rotation angular velocity x of the main shaft and the rotation angular velocity y of the rotary piston to 1:2. As a result, a volume change is induced and formed by the interaction of the cylinder and the rotary piston 10, which each rotate only in perfect circular motion.
Owner:ベクキョンイル
HYDRAULIC DEVICE AND CONSTRUCTION MACHINE WITH A HYDRAULIC MOTOR
ActiveDE602023018292T2Rotary piston pumpsRotary piston liquid enginesHydraulic motorStructural engineering
Owner:COMTESCO CORP
Machine for use as rotary combustion engine or compressor
ActiveEP4461923B1Sealing arrangements for enginesRotary piston enginesInternal combustion engineControl theory
The present disclosure relates to a machine for use as an engine or compressor (1). The machine (1) comprises a cylindrical housing (10) extending along a longitudinal axis (C), and housing plates (30) arranged against a respective longitudinal end of the cylindrical housing (10). The machine (1) further comprises a rotor (20) arranged inside the cylindrical housing (10), wherein the rotor (10) rotates around a rotational axis (R) that is parallel to but offset with respect to the longitudinal axis (C). The machine (1) further comprises a plurality of sealing plates (22, 22a-c), wherein two neighboring sealing plates (22, 22a-c) defines a closed chamber (25a, 25b, 25c) and wherein the first housing plate (30) is biased against the cylindrical housing (10) and axially displaceable along the longitudinal axis (C) to enable expansion of the closed chamber (25a, 25b, 25c) along the longitudinal axis (C).
Owner:KARLSSON STIG ERIK SE YOUNG
Adding system for fire-extinguishing units
An adding system for fire-extinguishing units is disclosed for producing a mixture of extinguishing agent and extinguishing agent additive (premix) by adding an extinguishing agent additive, e.g., a foaming agent, to an extinguishing agent, e.g., water, the adding system comprising a motor, which can be driven by the extinguishing agent stream, an adding pump, which can be driven by the motor, an adding line, and an extinguishing agent additive line. The invention increases the operational reliability of an adding system for fire-extinguishing units by the outer wall of the working chamber of the motor being in the form of a rotation motor, which can also have the shape of a logarithmic spiral. Furthermore, the wall of the drainage housing of the motor, which is in the form of a rotation motor, can have a through-slot for letting the extinguishing agent in and / or out. Moreover, the inlet of the adding pump can be arranged such that the extinguishing agent additive can flow into the adding pump substantially parallel to the movement direction of the pistons of the adding pump. Finally, the adding pump can have an integrated relief valve.
Owner:FIREDOS
Angle-axis rotary piston machine with spiral gearing
Angle-axis rotary piston machine with spiral teeth, characterized in that, in contrast to the conveying process, the spiral wraps of the piston teeth are halved during the expansion process, and the toothing of the single-start piston is thus 360 degrees and that of the double-start piston is 180 degrees.
Owner:NEHRING ANDREAS
Sliding vane pump or turbine
A positive-displacement pump or turbine (10) includes a rotor casing (14) that defines a rotor chamber (32) having a contoured wall (34) that forms a plurality of lobes (20, 22, 24, 26). A rotor (30) is positioned within the rotor chamber (32), and has an outer rotor surface (30a) spaced inward from the contoured wall (34) at the lobes (20, 22, 24, 26). Vanes (28) are mounted around the outer rotor surface (30a), and structures associated with the vanes (28) follow a track or groove (40, 42) defined by the rotor chamber (32) as the rotor (30) spins, thereby forcing the vanes (28) radially inwardly and outwardly to follow a curvature of the contoured wall (34).
Owner:AMORPHIC TECH
A low noise cycloidal hydraulic motor rotor structure
The utility model provides a low -noise cycloid hydraulic motor rotor structure belongs to hydraulic transmission technical field, including the axle cover, sets up the limit hole on axle cover surface, the fixed strip of swing joint in axle cover surface, the clamping block fixed installation in fixed strip both ends, set up the auxiliary assembly on clamping block surface. The utility model discloses through the cooperation of auxiliary assembly and rotating assembly, has realized the noise reduction effect when hydraulic motor operation, the detachable connection mode of fixed shell and clamping plate not only is convenient for assembling maintenance, ensures accurate positioning of rotating assembly simultaneously, the first rotating block adopts the setting of angular deflection with second rotating block, makes transmission more stable, the guiding effect of extruding piece and convex block hydraulic drive cooperation limit slot forms efficient power transmission path, reduces energy loss, the setting of eccentric shaft and transmission shaft guarantees torque output, reduces mechanical noise through the dynamic balance effect of double rotating block.
Owner:SHANDONG LIWO HYDRAULIC TECH CO LTD
A blade mounting structure for an eccentrically movable blade type pneumatic motor
ActiveCN224396543UReasonable installation structure designGuaranteed reliabilityEngine componentsRotary piston enginesPneumatic toolPneumatic motor
This utility model relates to the field of pneumatic tool technology, and in particular to a blade mounting structure for an eccentric movable vane pneumatic motor. The utility model mainly consists of a stator, rotor, radial groove, first permanent magnet, spring, second permanent magnet, blade, oil guide block, and wear-resistant rubber block. These components work together. By adding a first and second permanent magnet, capable of generating repulsive force, to the radial groove of the rotor, the reliability of the reciprocating radial displacement of the blade is ensured in conjunction with the spring. An oil storage chamber is provided in the blade to store lubricating oil. A wear-resistant rubber block is installed on the outer end of the blade via a snap-fit oil guide block. The oil guide groove in the oil guide block directs the oil from the storage chamber into the wear-resistant rubber block. The oil-soaked wear-resistant rubber block replaces the blade in contact with the inner wall of the stator. The wear-resistant rubber block has self-deformation capability, preventing damage when in contact with the inner wall of the stator. Simultaneously, the lubricating oil further enhances the lubrication effect.
Owner:CHANGZHOU RANTO METALWORK
Energy recovery type scroll compressor and carbon dioxide heat pump system using same
PendingUS20260153085A1CompressorRotary/oscillating piston combinations for elastic fluidsElectric machineryDrive motor
An energy recovery type scroll compressor and a carbon dioxide heat pump system using the same are provided, which relate to the technical field of compressors. The energy recovery type scroll compressor includes a scroll compression mechanism, a driving mechanism and a scroll expansion mechanism. One end of a motor shaft of the driving mechanism is in transmission connection with the scroll compression mechanism, and the other end of the motor shaft of the driving mechanism is in transmission connection with the scroll expansion mechanism. The motor shaft of a driving motor is in transmission connection with a loaded scroll plate of the scroll expansion mechanism. An air intake hollow shaft is arranged at one end, away from the loaded scroll plate, of an unloaded scroll plate of the scroll expansion mechanism. An air inlet communicates with an expansion end high-pressure working medium channel.
Owner:PUREIS TECHNOLOGY (HUBEI) CO LTD
Quieted front exhaust motor
A pneumatic motor is provided, the motor comprising a rotor housing (210) defining a cavity (211) and an intake (238,240), the intake in fluid communication with the cavity. The rotor housing (210) is configured to receive compressed air from the intake (238,240). A rotor (112) is housed by the rotor housing (210), the rotor including an output shaft (128) such that the rotor is configured to rotate about an axis (124) defined by the output shaft. The rotor (112) includes a plurality of vanes (146) that extend radially from the axis (124), and the rotor is configured to rotate when the compressed air exerts work against one or more vanes among the plurality of vanes, the traversal of compressed air through the pneumatic motor defining an airflow. An endplate (214) is coupled to the rotor housing (210), the endplate configured to receive the output shaft (128) through the endplate. The endplate (214) defines a channel (220) in fluid communication with the cavity (211) for directing the airflow from the rotor housing (210). A wear plate (216) is disposed between the endplate (214) and the rotor housing (210), the wear plate defining an exhaust port (242). The airflow is configured to pass through the exhaust port (242) from the cavity (211) to the channel (220), wherein the airflow measured from the intake to the exhaust port defines a first distance. A pneumatic wrench including the pneumatic motor is also provided.
Owner:INGERSOLL RAND IND US INC
A method of the flow of a working agent in a heat machine based on the stirling cycle, and a heat machine based on the stirling cycle
A method of flow of the working agent in a heat machine based on the Stirling cycle is characterized in that the working agent compression and decompression processes take place exclusively in the working chambers, and once the compression and decompression processes are complete, the entire working agent leaves the working chambers, where the transport between the said working chambers takes place at constant volume. A heat machine based on the Stirling cycle comprising a cold chamber (2) and a hot chamber (1), placed inside of which are impellers (12, 21) fitted with vanes (13, 20) guided along the inner surfaces of the chambers. The impellers (12, 21) are fitted on a common shaft (4) positioned in the chamber axis. The volumes of the working spaces (14, 19) formed between the said vanes (13, 20) change as the impeller rotates, and the total combined volume of the working spaces of the hot and cold chambers does not change when the spaces are combined, where the compression and decompression of the working agent takes place exclusively in the respective chamber.
Owner:AIC SPOLKA AKCYJNA
A ring expander
ActiveCN224363997Uincrease the lengthimprove energy efficiencyEngine componentsRotary piston engines
The utility model relates to the technical field of expansion machine, especially relates to a ring expansion machine, and the both ends of runner respectively are pasted on the both ends of circular cavity, the runner and circular cavity form annular cavity, and the wheel of runner is provided with piston block for truncating annular cavity section, the inside of shell body is provided with telescopic stopper for truncating into annular cavity, the both ends of circular cavity are provided with the air inlet and exhaust port that are communicated in annular cavity respectively, the air inlet and exhaust port are staggered and set, and the telescopic stopper is set between the air inlet and exhaust port, and the one end of runner towards the air inlet is provided with air hole, and the air hole penetrates to the side surface of runner, when using the utility model, the high pressure gas is synchronous with the gas discharge after the last work of piston block to do work in the air inlet cavity and the piston block is discharged from the exhaust cavity, and does not need to discharge again after resetting, greatly improves the energy efficiency of whole equipment.
Owner:SHENZHEN GURUN NEW ENERGY TECHNOLOGY CO LTD
Hydraulic rotary motor
Hydraulic rotary motor, with a case a shaft arranged concentrically in the housing, a rotor arranged concentrically in the housing, as well as inlet and outlet channels opening into the housing, characterized by the fact that inside the rotor, prism-shaped chambers are formed by closing both rotor ends using flange sleeves. These chambers are connected to the energy source, have the same length as the rotor, and are arranged parallel to its central axis. an annular channel is formed open on the upper side of the rotor along its circumference, and Sealing rings are provided on the sides of the annular channel, wherein the ring-shaped channel is connected to the energy source via an opening in the housing, the prism-shaped chambers are connected to the annular channel via openings in their upper sections and The bottom surfaces of the prism-shaped chambers are arranged radially at equal angular distances from each other.
Owner:MUSTAFAYEV SHAIG SARKAR
DRIVE MOTOR WITH TANGENTIAL POWER TRANSMISSION
Owner:FNF INNOVATION SH P K
A type of cycloid hydraulic motor integrating multiple speed functions
PendingCN122215994ARotary piston engines
The application relates to the motor technical field, in particular to a cycloid hydraulic motor integrated with multiple speed functions, which can output multiple speeds, meet different speed use requirements, and reduce costs; a first rotating stator mechanism and a second rotating stator mechanism are arranged in front of and behind a motor shell; the first rotating stator mechanism comprises a first rotor, a first stator and a first distribution disc; the second rotating stator mechanism comprises a second rotor, a second stator and a second distribution disc; a first linkage shaft is connected with the first rotor and the second rotor; a second linkage shaft is connected with the second rotor and an output shaft; a first oil port and a second oil port are arranged at the front end of the motor shell; a third oil port is arranged at the rear end of the motor shell; the first oil port is communicated to the first distribution disc through a first oil path flow channel in the motor shell; the second oil port is communicated to the inner cavity of the motor shell through a second oil path flow channel in the motor shell; the inner cavity of the motor shell is communicated with the first distribution disc and the second distribution disc; and the third oil port is communicated with the second distribution disc.
Owner:IMPRO FLUID TECH (ZHENJIANG) CO LTD
Hydraulic directional control device
The present application relates to the technical field of oil drilling, and particularly relates to a hydraulic directional control device, which aims to solve the technical problem that the output torque of a top drive power head cannot overcome the counter-torque when the rotation speed is low, so that the screw drill is reversed in the prior art. The hydraulic directional control device comprises a drilling core shaft, a drilling shell and a switching mechanism. The switching mechanism is sleeved on the drilling core shaft and inserted into the drilling shell. The switching mechanism can switch the drilling shell and the drilling core shaft between a locked state and a separated state under the drive of fluid. In the locked state, the drilling shell and the drilling core shaft are connected in power through the transmission of the clamping part. When the output torque of the top drive power head cannot overcome the counter-torque, the switching mechanism locks the drilling shell and the drilling core shaft together to make the screw drill enter the composite drilling state, so that the reverse rotation of the drilling shell is avoided. The technical problem that the output torque of the top drive power head cannot overcome the counter-torque when the rotation speed is low, so that the screw drill is reversed, is solved.
Owner:CNPC BOHAI DRILLING ENG +1
Improved gerotor type hydraulic motor
The present invention relates to a Gerotor type fluid pump or Gerotor type fluid motor (100) having a gerotor plate segment (108). The gerotor plate segment (108) includes an internal recess (220) for a valve drive shaft (172) that orbits and rotates within the gerotor plate segment (108). The gerotor plate segment (108) further includes a plurality of circumferentially arranged fluid pass ports (136) for selectively fluidly connecting a spool segment (110) and a gerotor type fluid displacement segment (106) of the Gerotor type fluid pump / Gerotor type fluid motor (100). The internal recess (224) includes at least two axially aligned segments (221, 222) of different diameters designed in a non-detachable manner.
Owner:DANFOSS AS
Rotor assembly, fluid drive device, and vehicle
The application relates to the technical field of vehicles and discloses a rotor assembly, a fluid driving device and a vehicle. Fluid enters a main pressure cavity through a fluid inlet, high-pressure fluid in the main pressure cavity enters a back cavity through a fluid inlet and outlet, the high-pressure fluid in the back cavity acts on a rolling unit in a radial outward direction of a rotor, and an elastic member exerts a force on the rolling unit in the radial outward direction of the rotor, so that the rolling unit and an inner wall of an outer shell are kept in abutment. Since the fluid in the back cavity comes from the fluid in the main pressure cavity formed by the inner wall of the outer shell and the rotor, the fluid in the back cavity changes with the change of the fluid pressure in the main pressure cavity, the abutment force between the rolling unit and the inner wall of the outer shell can be prevented from being too large, the rolling friction between the rolling unit and the inner wall of the outer shell can be prevented from being too large, and the influence of the rolling friction between the rolling unit and the inner wall of the outer shell on the service life and the operation reliability of the fluid driving device is reduced.
Owner:BEIJING CHEHEJIA AUTOMOBILE TECH CO LTD
Screw pump tubing anti-disengagement device, screw pump energy storage system and method
This invention relates to the field of oil and gas field development, and discloses a screw pump tubing anti-disengagement device, a screw pump energy storage system, and a method. The anti-disengagement device includes: a first anti-disengagement assembly and a second anti-disengagement assembly for connecting two screw pump tubings. The first anti-disengagement assembly includes a first ring body and a first engagement tooth disposed at one end of the first ring body, with the other end of the first ring body used for connection to the screw pump tubing. The second anti-disengagement assembly includes a second ring body and a second engagement tooth disposed at one end of the second ring body, with the other end of the second ring body used for connection to the screw pump tubing. The first engagement tooth and the second engagement tooth can engage with each other. Through this technical solution, when the first engagement tooth and the second engagement tooth are engaged, the first anti-disengagement assembly and the second anti-disengagement assembly will not rotate relative to each other when the screw pump tubing rotates, preventing disengagement during the rotation of the screw pump tubing and laying the foundation for energy storage using the screw pump.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Downhole sliding drilling self-adapting hydraulic back pressure relief drill string apparatus
This invention discloses a drill string device for adaptive hydraulic pressure relief in downhole sliding drilling, relating to the field of oil and gas drilling and extraction technology. It includes a pulse sub, one end of which is connected to a connecting sleeve, the other end of which is connected to a vibrating sub, the other end of which is connected to a rear connector, and the other end of the pulse sub is connected to a front connector. The vibrating sub contains a disc spring for driving the rear connector to reset, and a moving part for impacting and compressing the disc spring. Through components such as the screw rotor and turbine fan within the pulse sub, the hydraulic energy of the drilling fluid is efficiently converted into rotational mechanical energy (with minimal energy conversion loss). Simultaneously, by utilizing the periodic overlap and separation of the eccentric flow holes of the moving and stationary valve plates, combined with the reset action of the disc spring, high-frequency axial extension and retraction vibration of the rear connector is achieved. Furthermore, the drilling fluid can push the steel ball inside the front connector to bounce, forming radial reciprocating vibration, providing composite vibration power for drilling operations.
Owner:HENAN HONGXIN PETROLEUM TECHNOLOGY CO LTD