Abstract: In a structure for mounting, on a cylinder block, a fuel pump including a fuel pump drive shaft which is rotated by receiving a driving force of a crankshaft, and a fuel pump body which is operated as the fuel pump drive shaft is rotated for pumping fuel, the cylinder block includes a flange portion, on an end portion of the cylinder block in the crankshaft direction, projecting from a surface of the end portion along the crankshaft direction in a direction orthogonal to the crankshaft direction. The flange portion includes a bearing portion which rotatably supports the fuel pump drive shaft, and a pump accommodating hole portion which accommodates the fuel pump body. The fuel pump drive shaft is rotatably supported on the bearing portion, and the fuel pump body is accommodated in the pump accommodating hole portion.

Abstract: It is important not to form the partial bump in the collision structural part, however the fixed core and the movable core are relatively inclined due to an accumulation of tolerances and therefore even if each collision structural part of the fixed core and the movable core in formed in a flat shape, the fixed core and the movable core are contacted with not the whole of the collision structural parts but a part of the collision structural parts at the moment of the collision. In a case in which the collision structural part is formed in a ring shape or an intermittent ring shape, the fixed core and the movable core are contacted with each other at outer peripheral parts. Thus, when the fixed core and the movable core are collided with each other, a high stress is applied to the outer peripheral parts contacted first.

Abstract: A cup is in a bottomed tubular shape to receive an injector along an injector axis. A bracket is extended from a sidewall of the cup. The bracket includes at least one arm and a body. The at least one arm connects the body with the cup. The body forms a screw opening configured to receive a screw along a screw axis. The body has a pivot end on an opposite side of the screw axis from the injector axis.

Abstract: A pre-chamber fuel admission valve includes a fuel inlet, a fuel outlet, an actuated valve, and a check valve. The fuel inlet receives a supply of a fuel. The fuel outlet delivers the fuel to a pre-chamber. The actuated valve is between and in fluid communication with the fuel inlet and the fuel outlet. The actuated valve controls a flow of the fuel from the fuel inlet to the fuel outlet. The check valve is biased in a closed position and between and in fluid communication with the actuated valve and the fuel outlet. The check valve is configured to open and allow the fuel to exit the fuel outlet in response to a fuel pressure exceeding a pre-chamber pressure plus a bias pressure, and the check valve is configured to close in response to the pre-chamber pressure plus the bias pressure exceeding the fuel pressure.

Abstract: The decoupling element for a fuel injection device according to the invention is characterized in particular in that a low noise design is implemented. The fuel injection device includes at least one fuel injector and a receiving borehole in a cylinder head for the fuel injector, and the decoupling element between a valve housing of the fuel injector and a wall of the receiving borehole. The decoupling element is a decoupling system made up of a contoured spring seat on a shoulder of the receiving borehole and a spring washer resting on the shoulder. The fuel injection device is suited in particular for direct injection of fuel into a combustion chamber of a mixture-compressing spark-ignition internal combustion engines.

Abstract: A combination system may include a carburetor in fluid communication with an engine intake tract and a fuel injector in fluid communication with the engine intake tract.

Abstract: The invention relates to a method for operating a work apparatus having a combustion engine. An ignition device is provided for triggering an ignition spark at a spark plug for igniting a fuel/air mixture in a combustion chamber of the combustion engine. The combustion chamber is bounded by a piston which drives a crankshaft in a rotating manner. In order to avoid the combustion engine stopping in rich mode, the speed (n) of the combustion engine is monitored over the period of time (t, ?T) and the ignition point (ZZP) of the ignition device is advanced if the speed (n) of the combustion engine lies within a predefined speed range (nmin; nmax) within a predefined period of time (t, ?T) and then the speed n drops below a speed limit value (nG).

Abstract: A ceramic heater includes a substrate containing a ceramic, and a resistor containing another ceramic and embedded in the substrate. The resistor includes two lead portions, a joint portion that connects the two lead portions, an electrode portion formed integrally with at least one lead portion, having one end portion connected to the one lead portion, extending in a direction crossing an axis of the one lead portion, and having the other end portion exposed at the surface of the substrate. In a cross section of the electrode portion taken along an imaginary plane passing through the axis of the one lead portion and parallel to an extending direction of the electrode portion, 0.1?A/B?0.8 is satisfied, where A is the length of the other end portion parallel to the axis, and B is the length of the one end portion parallel to the axis.

Abstract: The present invention relates to an independent power generating method using water pressure and vapor, and a generating device thereof, which: sequentially circulate water by using a head drop of water and high-pressure vapor so as to continuously generate power, and generate power with a natural head drop caused by the gravity of water and, simultaneously, produce power with vapor; and naturally increase, condense, and reuse the vapor so as to hardly waste water resources such that power can be efficiently generated by efficiently rotating water wheels connected to an electric generator.

Abstract: A hydroelectricity and compressed-air power converter system includes a first fill pool, a plurality of internal fill tanks, an external fill tank, a wave channel, a plurality of air-generator systems, a second fill pool, at least one air storage tank, and at least one generator system. The first fill pool is intermittently in fluid communication with the external fill tank through the plurality of internal fill tanks while the external fill tank is intermittently in fluid communication with the second fill pool through the wave channel. The second fill pool is selectively in fluid communication with the first fill pool through the at least one generator system so that a set amount of water can be circulated within the power converter system as it generates compressed-air from the plurality of air-generator systems and hydroelectricity from the at least one generator system.

Abstract: A wave energy conversion arrangement comprising, at least two modules (M1, M2) each of which comprises, at least one first float (P1) and at least one second float (P2) coupled mechanically with each other by means enabling for reciprocal and independent displacing of these floats in relation to each other over a predetermined length segment along separate straight lines parallel to each other; at least one elementary energy conversion arrangement (7) using reciprocating movement of said at least one first float (P1) of a given module (M1, M2) relative to said at least one second float (P2) of this module (M1, M2), connecting means (16) for alternative detachable connecting with each other; wherein said elementary energy conversion arrangements (7) of the adjoining modules (M1, M2) are energetically coupled with each other constituting a main energy conversion arrangement (15).

Abstract: A floating body for tidal current power generation of the present invention comprises: a power generation unit comprising a water wheel and a power generator connected to the water wheel; and a body part provided with tidal current inlet and outlet paths having a cross-sectional area that is gradually reduced from the front and rear surfaces thereof toward the water wheel. According to the present invention, a plurality of floating bodies for tidal current power generation are disposed in parallel so that the longitudinal direction of the tidal current inlet and outlet paths coincides with the direction of the tidal current in a terrain such as a strait with a narrow width. In addition, provided is a power generation method which is a method for adjusting the draft of a floating body for tidal current power generation depending on the flow velocity of the tidal current, thereby smoothly performing power generation even when the flow velocity of the tidal current becomes slower as tidal stand nears.

Abstract: An electrical generation system based on tidal flow includes a reservoir and a fluid inlet tube extending between a tidal source and the reservoir. The inlet tube has at least one inlet turbine generator disposed therein. The fluid inlet tube extends along a first level. A fluid outlet tube extends between the reservoir and the tidal source. The fluid outlet tube has at least one outlet turbine generator disposed therein. The fluid outlet tube extends along a second level vertically lower than the first level. During high tide at the tidal source, tidal fluid flows from the tidal source, into the fluid inlet tube, past the at least one inlet turbine generator, and into the reservoir and during a low tide at the tidal source, the tidal fluid flows from the reservoir, into the fluid outlet tube, past the at least one outlet turbine generator, and to the tidal source.

Abstract: A buoyant kinetic energy apparatus, used for solving the problem that the kinetic energy generation efficiency of an existing buoyant kinetic energy apparatus is low, comprises: a base (1), provided with a liquid tank (11); a rotor (2), provided with a rotary body (21) and a shaft part (22), the shaft part (22) combining the rotary body (21) and the liquid tank (11), and the rotary body (21) being rotatably arranged in the liquid tank (11) by means of the shaft part (22); a float (3), telescopically arranged on the rotary body (21); and a telescoping control module (4), arranged in the liquid tank (11) and controlling the float (3) to telescope relative to the rotary body (21) when the rotary body (21) rotates.

Abstract: A hydraulic rotating machine adapted to be actuated and rotated by supply and discharge of a working fluid includes a cylinder block to which a shaft is coupled, the cylinder block being configured to be rotate together with the shaft; a cylinder formed to have an opening portion on one end side of the cylinder block, a recessed portion being formed on an inner circumference of the cylinder; and a bush inserted from the opening portion of the cylinder and provided on the inside of the cylinder, the bush having a projection portion filled into the recessed portion by plastic deformation. The recessed portion is formed in such a manner that width along an axial direction of the cylinder becomes smaller toward the depth direction.

Abstract: Systems and methods for joining blade components of a rotor blade are provided. A method includes positioning a first blade component and a second blade component such that a joint location of the first blade component and a joint location of the second blade component are proximate each other. The method further includes applying a force to an outer surface of the second blade component and an opposing force to an inner surface of the second blade component. The force and opposing force maintain an aerodynamic contour of the second blade component. The method further includes connecting the joint location of the first blade component and the joint location of the second blade component together.

Abstract: Methods for joining surface features to wind turbine rotor blades are provided. A method includes providing the surface feature after forming of the rotor blade. The surface feature includes a thermoplastic resin. The formed rotor blade includes a plurality of blade components joined together to form an exterior surface defining a pressure side, a suction side, a leading edge, and a trailing edge each extending between a tip and a root. The formed rotor blade further includes a thermoplastic resin. The method further includes positioning the surface feature adjacent the exterior surface, and welding the thermoplastic resin of the surface feature and the thermoplastic resin of the formed rotor blade together.

Abstract: Rotor blades and methods for joining blade components of rotor blades are provided. A method includes positioning an insert between and in contact with a first blade component and a second blade component. At least one of the first blade component or the second blade component includes a thermoplastic resin. The insert includes a thermoplastic resin and an energy absorptive pigment. The method further includes heating the thermoplastic resin of the at least one of the first blade component or the second blade component and the thermoplastic resin of the insert. The method further includes cooling the thermoplastic resin of the at least one of the first blade component or the second blade component and the thermoplastic resin of the insert. The heating step and the cooling step join the first blade component, the second blade component and the insert together.

Abstract: Methods for assembling rotor blades are provided. A method includes receiving a first portion of a rotor blade at an erection site. The method further includes receiving a second portion of the rotor blade at the erection site. The method further includes aligning the first portion and the second portion at the erection site, the first portion and the second portion supported on a fixture system when aligned. The method further includes connecting a blade component of the first portion and a blade component of the second portion together at the erection site.

Abstract: Rotor blades and methods for joining shear clips in wind turbine rotor blades are provided. A method includes positioning the shear clip adjacent a shear web of the rotor blade, the shear clip including a thermoplastic resin, the shear web including a thermoplastic resin. The method further includes welding the thermoplastic resin of the shear clip and the thermoplastic resin of the shear web together. The method further includes positioning the shear clip adjacent a spar cap of the rotor blade, the spar cap including a thermoplastic resin. The method further includes welding the thermoplastic resin of the shear clip and the thermoplastic resin of the spar cap together. The method further includes joining the shear web and the spar cap together.

Abstract: A spar for use in a blade of a wind turbine comprises a plurality of rods having polygonal cross-sections bundled together into a bundle having a first plurality of rods disposed along a widthwise extent of the bundle and a second plurality of rods disposed along a heightwise extent of the bundle and means to secure rods within the plurality of rods to one another.

Abstract: Disclosed is a micro wind cell and a micro wind cell array for generation of power. The micro wind cell for generating wind power may comprise a rotor, an upper support and a lower support, a spacer rod, one or more bearings, a generator mount, a power generator and a rotor pin. The rotor further comprises a plurality of rotor blades and a through hole formed at the center of the rotor. The through hole is configured to receive a rotor pin. Further, the rotor blades are configured perpendicular to the direction of wind and the rotor rotates for generation of power. The micro wind cell array comprises one or more micro wind cells for generating power utilizing flow of wind from multiple directions along a wall, and a battery pack for storing the generated power. The micro wind cell array in isosceles quadrilateral shape may enable stacking of arrays.

Abstract: A wind turbine power generating apparatus includes a wind turbine rotor including at least one blade; a pitch drive part for changing a pitch angle of the at least one blade; a generator configured to be driven by rotational energy of the wind turbine rotor; a circuit breaker for switching a connection state of the generator with respect to a utility grid; and a controller for controlling the wind turbine power generating apparatus. The controller includes a pitch control part configured to control the pitch drive part in a constant rotation-speed control mode for maintaining a rotation speed of the wind turbine rotor at a target rotation speed, before connection of the generator; a connection-condition determination part configured to determine whether a connection determination condition is satisfied; and a connection-command generation part configured to provide the circuit breaker with a connection command to connect the generator to the utility grid.

Abstract: A method for black starting a wind turbine and a wind farm following islanding operation, a method for restoring the wind farm following the islanding operation, and the wind turbine and wind farm. The wind turbine comprises auxiliary equipment, a generator, a converter electrically connectable to the generator, and an energy storage system, the generator is electrically connectable to the auxiliary equipment via the converter, the energy storage system is electrically connectable to the auxiliary equipment.

Abstract: The invention relates to a method of controlling a wind turbine, the wind turbine comprising wind turbine blades attached to a rotor hub and a control system for pitching the blades relative to the rotor hub. The method comprises determining a wind speed and providing a normal pitch mode of operation to control the output power of the wind turbine, where the pitch mode of operation comprises pitch reference values in dependence of the wind speed. The output power of the turbine is controlled according to the normal pitch mode of operation as a function of the wind speed if the wind speed is lower than a first upper level wind speed threshold, and according to a modified mode of operation if the wind speed exceeds the first upper level threshold wind speed, wherein the modified mode of operation comprises decreasing the output power according to a de-rating function which is a function of time.

Abstract: A wind power installation with a rotor which has two or more rotor blades and which is rotatably bearing-supported for rotation around a rotor rotation axis. The rotor is connected to a generator for generating electrical power. The rotor and the generator form a part of a turbine which is received by a turbine carrier. The turbine carrier is rotatably arranged at a supporting structure. The turbine is movably mounted in the turbine carrier via a bearing device so that the spatial position of the turbine in the turbine carrier can be modified. A pivoting range of the turbine corresponding to a pivoting range of the rotor rotation axis includes a first angle range and a second angle range relative to a reference plane, and the entire pivoting range is at least 120°.

Abstract: Systems and methods for determining current limits used in controlling wind turbine systems are provided. An example wind turbine controller identifies a largest current magnitude out of a first current magnitude, a second current magnitude, and a third current magnitude of a three phase power bus. The turbine controller averages the first current magnitude, the second current magnitude, and the third current magnitude to obtain an average current magnitude. The turbine controller determines a maximum current adjustment factor based at least in part on the largest current magnitude and based at least in part on the average current magnitude. The turbine controller adjusts a maximum current magnitude limit of the wind turbine by the maximum current adjustment factor to obtain an adjusted maximum current magnitude limit. The turbine controller controls the wind turbine based at least in part on the adjusted maximum current magnitude limit.

Abstract: The invention relates to a wind turbine station and tower as well as wind farms using them, wherein each wind turbine station comprises a tower consisting of preferably two or more vertically oriented compressed air pressure storage tanks or vessels. The tanks or vessels are preferably comprised of vertically oriented elongated steel pipes that are extended parallel to each other and spaced apart with a steel web between them for reinforcing the strength and rigidity and moment resistance of the tower to resist lateral wind forces that may be applied to the top of the tower. Various numbers and confirmations of pipes are contemplated to provide the advantages described herein.

Abstract: An assembly for use in a drive-train of a wind turbine having a transmission, a generator and a module. The module includes a shaft or hub, at least one bearing and a support structure. The shaft of the module or the hub is mounted by the bearing so as to rotate in the support structure. The shaft or the hub can be connected in a rotationally fixed manner to a shaft of the transmission. A rotor of the generator can be fixed to the shaft of the module or to the hub. The support structure can be fixed to a housing of the transmission or the generator. At least one assembly safety device is provided in order to be able to fix the rotor of the generator. When the rotor of the generator is fixed by way of the assembly safety device, the module can be fitted and removed.

Abstract: The present application includes wind turbine condition monitoring method and system.

Abstract: A wind turbine including a generator with a stator and a rotor, a cooling arrangement, a wind turbine brake including a brake disk and a caliper with brake pads is provided. An air duct with a filter is located near the brake pads of the caliper. During the operation of the cooling arrangement, a part of the air flow is guided via the brake pads. The brake dust produced by the brake pads during operation of the brake will be reduced by the filter of the air duct.

Abstract: A circuit (400, 700, 800) comprising: a first power source (402) supplying first current to a load (470) during a first Period of Time (“PoT”); a second power source (416) supplying a second current to the load during a second POT; a Unidirectional Current Valve (“UCV”) in series with the first power source; a current detector (420, 702, 802) in series with the UCV (422); and a switch (424) in parallel with a series combination of the current detector and UCV to bypass the UCV during the second PoT. The current detector determines whether the second period of time has commenced and whether the switch has closed.

Abstract: A fuel unit pump for an internal combustion engine includes a fuel unit pump body, a pumping plunger and a roller tappet for contacting a cam lobe of a rotatable shaft of the internal combustion engine. The roller tappet includes a roller tappet body connected to the pumping plunger, and a cam roller rotatably mounted on a cam roller carrier and defining a cam roller rotation axis. The cam roller carrier is coupled to the roller tappet body and is elastically deformable for aligning the cam roller with the cam lobe.

Abstract: A fluid delivery device includes: a first chamber configured to receive fluid from a fluid reservoir; a second chamber configured generate a vacuum therein to apply pressure to the fluid in the first chamber to enable the fluid in the first chamber to be output from the fluid delivery device; and a flow control member configured to allow the fluid in the first chamber to flow through the flow control member into the fluid reservoir at a predetermined flow rate to decrease the vacuum in the second chamber.

Abstract: A fuel pump includes a plunger that reciprocates inside a cylinder. The fuel pump includes a first movable element connected to the plunger, a second movable element that functions as a counterweight for preventing or reducing vibrations that are created by reciprocation of the first movable element, an electromagnet provided between the first movable element and the second movable element, a magnetic member that is provided between the first movable element and the second movable element and that attracts both the first movable element and the second movable element when the electromagnet is energized, and a first spring that urges the first movable element and the second movable element so as to move away from each other.

Abstract: A pump uses solar energy to heat bimetals and other materials with high expansion coefficients to create movement that is coupled to pistons or impellers resulting in a fluid pumping action. The moving pistons or impellers are used to push salt water (or any fluid) through a membrane for filtration. Furthermore, the mechanical movement, powered by solar energy can be used for a variety of applications including pumps to move liquids or gases.

Abstract: A tank for motor vehicle includes a tank wall, a fill opening, an outlet opening, a plurality of functional components, and a plurality of attachment formations. The tank wall forms an outermost casing of the tank. The fill opening passes through the tank wall for inlet of operating fluid into the tank. The outlet opening passes through the tank wall for outlet of the operating fluid. The plurality of functional components are designed for pumping and/or for cleaning and/or for detecting a property and/or for changing a property of the operating fluid. The plurality of attachment formations are designed as being integral with the tank wall for positioning of a plurality of functional components on the tank wall. The functional components are disposed on segments of the tank wall, which are arranged at an incline to each other.

Abstract: A magnetically driven micropump for handling small fluid volumes. The micropump includes a first chamber and a second chamber. A flexible membrane being disposed between the first and second chambers. The flexible membrane being magnetically coupled to an actuator for displacing the membrane.

Abstract: A piston assembly for reducing clearance volume in a reciprocating compressor for compensating for piston tilt and improving the volumetric efficiency of the compressor includes a piston located within a piston cylinder, the piston having a first end and a second end, a wrist pin associated with the first end of the piston, and a cylinder head/valve assembly associated with the second end of the piston, wherein at least a portion of the second end of the piston includes an angled portion. The piston having the angled portion can be used with oil free cylinders and trunk type pistons. The piston can also be used in a multiple stage, multiple cylinder compressor including a series of piston assemblies. A method of increasing the volumetric efficiency of a reciprocating compressor can also be achieved using the piston having an angled portion.

Abstract: An air pump is disclosed, the lower end of a drive shaft is in active connection with an eccentric hole on an eccentric wheel, and vents are opened on a hole wall of the eccentric hole to use as a heat sink in such a way to expose the lower end of the drive shaft to the outside through the vents, thereby facilitating cooling. In addition, the lower end of the drive shaft is formed into a reduced diameter section corresponding to vents, the edges of which are positioned on the reduced diameter section so as to increase an avoidance clearance, avoiding the friction generated between burrs generated on the edge of the vent upon manufacturing and the drive shaft, thereby improving the product life.

Abstract: Provided is a dual pump system including: a dual pump provided with a plurality of chambers independent from each other, wherein an input and an output port are provided in each of the chambers; a plurality of output lines connected to the output ports of the plurality of chambers, respectively; and a switching valve that is provided in an output line of one side of the plurality of output lines, enables a fluid to flow to the output line when operating in one direction, and enables the fluid to be drained to an oil pan through a bypass line branched from the output line when operating in the other direction.

Abstract: A vehicle hydraulic device is provided with an electric motor-driven oil pump and a shuttle valve, so that a vane pump operates smoothly, even at the start, with a backpressure applied from the electric motor-driven oil pump to the vanes. Even when the oil pressure of a working fluid discharged from the vane pump exceeds the backpressure inside vane housing grooves, the working fluid flows from a vane pump discharge oil passage to a backpressure oil passage, so that the vanes are not pushed into the housing grooves. Thus, it is possible to reduce the fluctuations in discharge amount of the vane pump due to fluctuations in oil pressure of the vane pump discharge oil passage during operation of the vane pump.

Abstract: A check valve provided makes it possible to operate a vane pump smoothly even at the start of the vane pump by maintaining an oil pressure in backpressure oil passages inside the vane pump while the vane pump is stopped. The check valve opens at the point in time when an oil pressure control device, to which a working fluid is supplied from the vane pump, has been filled with the working fluid and the oil pressure in discharge oil passages communicating with the oil pressure control device has risen and exceeded the oil pressure in the backpressure oil passages. Thus, the check valve is prevented from opening and closing repeatedly, so that the durability of the check valve is improved.

Abstract: An electric pump includes an outer rotor rotatably disposed radially inward of a stator, the outer rotor including a plurality of permanent magnets in an outer circumferential surface thereof, a plurality of plate holding grooves being formed in an inner circumferential surface of the outer rotor; an inner rotor provided radially inward of the outer rotor, a plurality of slots being radially formed in an outer circumferential surface of the inner rotor; and a plurality of connecting plates each including a head portion and a radially-inner end portion, the head portion being formed in a substantially circular shape in cross section and fitted swingably into the plate holding groove, the radially-inner end portion being slidably fitted into the slot. Each of the plate holding grooves is located within a projection plane of the permanent magnet with respect to a circumferential direction of the outer rotor.

Abstract: A scroll fluid machine includes fixed and orbiting scrolls which form a compression chamber; a land which divides the compression chamber into first-stage and second-stage compression chambers; a wrap groove formed in a spiral shape along a tip of a fixed wrap of the fixed scroll; an intermediate groove formed in the land; a seal member; and an intermediate seal member. The land includes a first-stage outlet communicating with the first-stage compression chamber and a second-stage inlet communicating with the second-stage compression chamber. The wrap groove includes an outer peripheral wrap groove adjacent to the land on a radially outward side and an inner peripheral wrap groove adjacent to the land on a radially inward side. The intermediate groove is in communication with the outer and inner peripheral wrap grooves. The seal member is fitted in the wrap groove except the outer and inner wrap grooves.

Abstract: A screw compressor includes compressor bodies, a motor disposed in a side of the compressor bodies, a gear box coupled to the compressor bodies and transmitting the drive force of the motor to a screw rotor, and a tubular coupling casing coupling the gear box and the motor and having horizontal axis. The coupling casing has a work hole in the horizontal direction. The work hole is used for maintaining a coupling accommodated in the coupling casing. The coupling casing has a rib extending in the up-down direction. It is thus possible to avoid reduction in the rigidity of the coupling casing with no cost increase, and to improve maintainability.

Abstract: The scroll compressor (1) includes an orbiting scroll arrangement (7), and a drive shaft (18) configured to drive the orbiting scroll arrangement (7) in an orbital movement, the drive shaft (18) including a lubrication channel (32) and a first lubrication hole (35) fluidly connected to the lubrication channel (32) and emerging in an outer wall of the drive shaft (18). The scroll compressor (1) further includes a first and a second bearings (38, 39) axially offset along a rotation axis of the drive shaft (18) and each configured to engage the drive shaft (18). The first and second bearings (38, 39) and the drive shaft (18) partially define a first annular gap (44) in which emerges the first lubrication hole (35). The first bearing (38) and the drive shaft (18) define a first oil recess fluidly connected to the first annular gap (44), and the second bearing (39) and the drive shaft (18) define a second oil recess fluidly connected to the first annular gap (44).

Abstract: A compressor device with at least two compressor elements connected in series and at least two coolers of which there at least two split coolers that are split in separate successive stages, respectively a hot stage and a cold stage, that are connected together in one or more separate cooling circuits such that the compressed gas is cooled sufficiently between the compressor elements with a minimum coolant flow rate to keep the temperature of the cooled gas at the outlet of each cooler below a maximum permissible value and thereby to realise a desired temperature increase of the coolant in at least one of the aforementioned cooling circuits.

Abstract: On a plane orthogonal to the rotation shaft, an upper muffler chamber has a plurality of flared portions that are flared from a center of a rotation shaft toward between penetrating bolts and a plurality of small-diameter portions that connect between the flared portions, are apart from penetrating bolts, and are formed on a center side of the rotation shaft from the penetrating bolts. A muffler outlet is provided in each flared portion. A second outlet and a refrigerant path hole of an upper end plate are positioned on an inside of one of a plurality of flared portions, and an opening area of the muffler outlet of one flared portion is greater than an opening area of the muffler outlet of each of the other flared portions.

Abstract: Provided is a fluid pump assembly. The pump has a pair of housings magnetically coupled to each other. The first housing contains a drive motor and a magnetic assembly. The second housing contains a magnetic assembly and a blade for imparting movement to a fluid. As the first magnetic assembly is rotated by the drive motor, the magnetic connection to the assembly in the second housing causes the second magnet to rotate, driving the blade.