1075results about "Working fluid for engines" patented technology

The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the compressor drive motor (24), the pressure within the system is relieved and substantially equalized across the compressor, thereby eliminating the possibility of unpowered reverse rotation of the compressor at shutdown. Pressure relief and equalization may be achieved by reducing the operating speed of the compressor to a low forward speed for a period of time prior to deenergizing the compressor drive motor. Pressure equalization may also be achieved by driving the compressor in reverse rotation prior to deenergizing the drive motor.

Provided is an electric water pump with an over-molding stator for improving a flow structure and a dimensional accuracy in the water pump. The pump largely includes: a stator including a rotor accommodation part accommodating a rotor and a plurality of coils arranged around a rotating shaft of the rotor in a circumferential direction; and a molding part surrounding the stator to insulate the plurality of coils, wherein the molding part is injected onto the stator to surround the entire coil while having a plurality of flow paths formed between the coils and passing through in a direction of the rotating shaft.

The invention relates to a reciprocating compressor. The reciprocating compressor may include a housing, a drive motor, a drive shaft, a piston, a cylinder, a valve plate, a suction valve, and a suction valve stopper, and the suction valve stopper composed of an elastic member may be disposed between the suction valve and the cylinder to support a reed valve portion of the suction valve to limit an opening degree of the reed valve portion. Therefore, the opening degree of the suction valve can be sufficiently ensured, so that not only can the cooling force in a high-load operation region be improved, but also dead volume can be prevented in advance, and then the energy efficiency in a low-load operation region and / or a high-load operation region can be improved.

An apparatus for generating electricity from water flow comprising: a convergent section connected at a downstream end thereof to an upstream end of a mixing chamber such that a venturi is formed; a diffuser section connected to a downstream end of the mixing chamber, the diffuser configured such that in use the static pressure at the exit of the diffuser is greater than the static pressure at the venturi; at least part of a tube located in the convergent section, such that an annulus is defined between the tube and the convergent section, to form a first flow passage, and the tube defining a second flow passage within the tube; and a turbine, which is connected with the tube and connectable to a generator, wherein the turbine is located within a turbine chamber that is connected at a downstream end thereof to an upstream end of the convergent section.

The invention relates to a device comprising an asymmetrical wing profile (2) and an adjusting device (15), which asymmetrical wing profile (2) has a profile thickness (q) and a profile chord (p) extending between a wing leading edge (n) and a wing trailing edge (e), which asymmetrical wing profile (2) has, in at least one longitudinal portion (L1-Ln), a three-part variable wing profile (21) in which a front and a rear wing segment (211, 213) are joined to a central wing segment (212) in an articulated manner by means of two hinges (214) having axes of rotation (z) and are designed to permit a rotational movement about the associated axis of rotation (z) with respect to the central wing segment (212).

A method for forming a housing for a flow-conducting component includes forming at least two functional regions of the housing having different material properties using at least one of radiation-induced melting and solidification of a build material and a process gas jet. Each functional region of the housing may be generated from a different construction material, and at least one functional layer may be formed with a reduced weight structure such as a honeycomb structure.

Provided is a water pump using an axial gap-type electric motor employing a rare-earth-free magnet. The water pump (EWP) includes: a pump housing having a space in a sealing state on one side thereof, in which, on the other side thereof, an inlet through which a fluid is introduced and an outlet through which the introduced fluid is discharged are connected through a fluid flow passage; a rotor rotatably supported on the fluid flow passage; an impeller integrally formed with the rotor on the upper side of the rotor; a stator arranged in the lower space to generate a rotating magnetic field to rotatably drive the rotor; and a waterproof partition wall arranged inside the pump housing to separate the rotor from the stator.

Intake and gas separators for a downhole rotary pump define a fluid flowpath and comprise two or more intake stages arranged in parallel, with two or more of the intake stages each having one or more impeller. Multiple intakes may be configured in parallel and series, in some cases being provided as compact axial length gas separators.

An electric water pump includes: a housing with a cooling water inlet and a cooling water outlet; a stator assembly provided inside the housing and having stator coils on upper and lower surfaces thereof, respectively; a rotor assembly including a rotary shaft rotatably supported on the housing, a first magnetic body provided at an upper portion of the stator assembly, and a second magnetic body provided at a lower portion of the stator assembly; and an impeller provided to rotate integrally with the rotary shaft of the rotor assembly.

Provided is a turbo compressor including a compressed gas inlet through which a gas is sucked in, an impeller for compressing the gas introduced through the compressed gas inlet, a compressed gas outlet through which the gas compressed by the impeller is discharged to the outside, a compression unit including a compressed gas channel connected from the compressed gas inlet to the compressed gas outlet, a motor including a rotating shaft having an end coupled to the impeller, to rotate the impeller, a housing including a motor accommodation space for accommodating the motor, a cooling air channel provided to pass through the motor accommodation space and formed to circulate a cooling gas accommodated therein, a cooling water channel formed to circulate a cooling liquid capable of cooling the housing, and thrust bearings disposed at an end of the rotating shaft, wherein the cooling water channel includes bearing cooling water channels disposed within a predetermined distance from the thrust bearings to cool the thrust bearings. According to the present invention, the thrust bearings supporting the rotating shaft and the cooling gas accommodated in front air channels adjacent to the bearing cooling water channels may be very rapidly cooled.

An axial flux motor water pump comprising a housing, a cover attached to the housing, a stator mounted within the housing, the stator comprising a plurality of stator poles mounted in a ring, each stator pole comprising an electric wire winding, a rotor journaled to the housing in cooperating relation to the stator on a single bearing, an impeller fixed to an end of the rotor, a plurality of magnets mounted to an end of the rotor in cooperative relation to the stator poles, a seal between the rotor and housing whereby the stator and magnets are in a dry zone, the stator enrobed in thermal potting within the housing; and power electronics contained in the cover. The rotor portion of the rotor may be manufactured in a sintering process.

In general terms the present invention proposes a system 100 for storing energy. The system comprises upper and lower reservoirs 102, 104, a working fluid 120, and a conduit 106 arranged to permit flow of the working fluid 120 from the upper reservoir 102 to the lower reservoir 104 under gravity. The conduit 106 comprises a turbine generator 110 arranged to be driven by the flow of the working fluid 120 to generate energy. A heat transfer device is arranged to transfer heat to and / or from the upper reservoir 102 and / or lower reservoir 104.

Embodiments disclosed may serve the function of a pump, a generator, or a propulsion system. Two flexible fins are coupled via their longitudinal inner edges to fin coupling modules. An external fluid flow causes traveling fin undulations. The angle of the fins relative to each other changes as undulations travel along the fins which can be translated through the fin coupling modules into mechanical work, powered by the external fluid flow. The mechanical work of the fin coupling modules may be the cyclical extension and contraction of pistons or bellows incorporated into the fin coupling modules, which may draw ambient fluid during their extension cycles and compress fluid during their contraction cycles to create a pump. The pistons or bellows may also be sealed from ambient fluid but connected through conduits through which contained fluid is exchanged in a continuous circulation of fluid to power a pump or a turbine.

A device and related method that provides, but is not limited thereto, a two-phase heat transfer device with unique combination of enhanced evaporation and increased cooling capacity. An advantage associated with the device and method includes, but is not limited thereto, increased cooling capacity per unit area, controlled and optimized evaporation, prevention of boiling, and prevention of drying of the evaporator. An aspect associated with an approach may include, but is not limited thereto, using anon-wetting coating or structure to keep working fluid away from the spaces between elongated members of an evaporator and using a wetting coating or structure to form thin films of working fluid around the distal region of the elongated members. For example it can be used to cool a computer chip, a skin of a hypersonic flying object, parabolic solar collector, turbine or engine blade, or any other heat source that requires high heat flux.

A device has a rotor module comprising a motor generator, rotor blades, and a rotary-wing kinematic system for the rotor blades connected to the motor generator. The rotor blades are each divided into a plurality of longitudinal sections, each for receiving at least one actuator integrated in a longitudinal member or transverse member of the rotor blade, and have a variable, asymmetrical airfoil which, in one revolution of the rotor blade on a diameter of the circular path, the diameter being freely orientable within an adjustment range and having turning points, can be adjusted in at least one longitudinal section of the rotor blade with a length in such a way that the suction surface and the pressure surface of the asymmetrical airfoil change at the turning points from the outside to the inside of the circular path, or vice versa.

A rotary compressor (1) comprising: a casing (10); a motor (20) installed inside the casing; a compression unit (40) installed under the motor; a plurality of refrigerant passages formed to vertically pass through the compression unit along an edge of the compression unit; an upper muffler (80) installed in a top surface of the compression unit and forming an upper muffler space which communicates with the plurality of refrigerant passages; an inner muffler (110) installed in a bottom surface of the compression unit and forming an inner muffler space which does not communicate with at least one refrigerant passage among the plurality of refrigerant passages but communicates with the remaining refrigerant passages; an outer muffler (120) installed under the inner muffler (110) and forming an outer muffler space which communicates with at least one refrigerant passage which does not communicate with the inner muffler space; and a refrigerant discharge passage (119) which is provided in a portion of the inner muffler (110) in contact with the outer muffler space and is formed to selectively discharge the refrigerant of the inner muffler space to the outer muffler space according to the flow rate of the refrigerant discharged from the bottom surface of the compression unit.

Provided in embodiments of the present application are a head mechanism and a fan apparatus. The head mechanism includes: a casing, where a primary air inlet and an air outlet are provided on a circumferential side wall of the casing, and an auxiliary air inlet is provided on an axial wall surface of the casing; and a centrifugal volute arranged in the casing, where a centrifugal fan is arranged in the centrifugal volute, and an air duct outlet corresponding to the air outlet and an air duct inlet corresponding to the auxiliary air inlet are provided on the centrifugal volute; and air flowing from the primary air inlet and the auxiliary air inlet flows into the centrifugal volute through the air duct inlet. According to the embodiment of the present application, since the primary air inlet located on the circumferential side wall is provided.

An apparatus includes an electric generator that includes a fluid inlet configured to receive hydrogen at a first pressure, a turbine wheel configured to expand the hydrogen and rotate in response to expansion of the hydrogen flowing into an inlet of the turbine wheel and out of the outlet of the turbine wheel, a rotor coupled to the turbine wheel and configured to rotate with the turbine wheel, a stationary stator, the electric generator to generate an alternating current upon rotation of the rotor within the stator, and a fluid outlet configured to output hydrogen at a second pressure less than the first pressure. The apparatus includes a power electronics system electrically connected to an electrical output of the electric generator and to receive alternating current from the electric generator. The power electronics can condition the generated electrical current to supply power to various types of loads.

A device and related method that provides, but is not limited thereto, a two-phase heat transfer device with unique combination of enhanced evaporation and increased cooling capacity. An advantage associated with the device and method includes, but is not limited thereto, increased cooling capacity per unit area, controlled and optimized evaporation, prevention of boiling, and prevention of drying of the evaporator. An aspect associated with an approach may include, but is not limited thereto, using a non-wetting coating or structure to keep working fluid away from the spaces between elongated members of an evaporator and using a wetting coating or structure to form thin films of working fluid around the distal region of the elongated members. For example it can be used to cool a computer chip, a skin of a hypersonic flying object, parabolic solar collector, turbine or engine blade, or any other heat source that requires high heat flux.

An engine (1) comprises a compressed gas source (3) and a fluid circuit connected to an output of the compressed gas source such that compressed gas can be driven through the circuit by the compressed gas source. The output of the compressed gas source is connected, through the fluid circuit, to a turbine component (5) connected to a rotating shaft (9) that acts as the output of the engine in use. A heat exchanger (13) receives fluid in the circuit that has passed through the turbine component (5) and is arranged to reduce the temperature and pressure of the fluid. The turbine component (5) comprises a boundary layer turbine comprising a plurality of axially aligned discs (51), wherein each disc comprises an outlet vent (53) arranged towards the centre of the disc.

A scroll compressor is disclosed. The scroll compressor has back pressure holes which are formed in a non-orbiting scroll and a back pressure chamber assembly, and communicate a compression chamber and a back pressure chamber. In addition, a back pressure valve is provided inside the back pressure hole to change the passage area of the back pressure hole by moving along the longitudinal direction of the back pressure hole due to the pressure difference between the compression chamber and the back pressure chamber. Due to the back pressure valve, pressure pulsation in the back pressure chamber can be improved.

An oscillating water column (OWC) includes a top body and a bottom body. The top body includes a hollow shape, an open top end, an open bottom end, a chamber traversing between the open top and bottom ends, a power take-off system proximate to the open top end, and an air channel proximate to the open top end and the power take-off system. The bottom body includes a bottom heave plate and a plurality of flexible tethers coupling the top body and the bottom body.

Disclosed is a dual pressure-boosting high wind speed fan, including a driving motor, a fan housing and a fan blade. An air duct of the housing is formed inside the fan housing; the fan blade is provided with a shaft mounting portion and a blade assembly, wherein the shaft mounting portion is tightly mounted on a power output shaft of the driving motor through a shaft mounting hole; and the fan housing includes a cylindrical wall of the housing, a spherical portion and a motor fixing portion. The dual pressure-boosting high wind speed fan features novel structural design, high working wind speed, small turbulent flow and noise and good mute effect.

Renewable energy sources such as solar power and wind power are intermittent and variable. It is desirable to store energy produced by these systems so it can be utilized when these sources are not producing. The battery system combines the force of gravity with high density water to generate electricity in a turbine. The water is stored at surface level and returned to the elevated storage site when renewable energy is available to pump it to the storage facility. The density of the water can be increased with the use of soluble and insoluble ground minerals using suspending agents and surfactants. These batteries can operate independently to generate AC current for supporting grid demand or can generate DC current for specific applications like regenerating chemical batteries used in transportation devices such as automobiles and trucks.

A wind turbine system is disclosed. The wind turbine system includes a flow consolidating conduit and an air driven rotor assembly. The flow consolidating conduit is close sided and extends from a consolidating conduit upstream end to a consolidating conduit downstream end. The flow consolidating conduit includes an airflow capture inlet at the consolidating conduit upstream end, and a plurality of flow partitions that subdivide a cross-sectional area of the flow consolidating conduit into three or more flow paths. Each flow partition and each flow path extend between the consolidating conduit upstream end and the consolidating conduit downstream end. Each flow partition has a partition downstream end located upstream of the consolidating conduit downstream end. At each partition downstream end, adjacent flow paths merge into a merged flow path. The three or more flow paths gradually merge into a single flow path at the consolidating conduit downstream end.

An air blower is disclosed. An air blower according to an aspect of the present invention includes: a fan member rotatably provided to provide transfer force to fluid; a flow passage-forming member accommodating the fan member, having a space that communicates with the outside, and including an outer periphery that encompasses the fan member; a scroll unit rotatably accommodated in the space of the flow passage-forming member; and a housing, which communicates with the space of the flow passage-forming member and the outside, covers the space of the flow passage-forming member and the scroll part, and is coupled to the flow passage-forming member, wherein the scroll unit includes: a scroll motor fixedly coupled to the housing; a scroll body coupled to the scroll motor so as to rotate by means of the operation of the scroll motor; and a scroll opening penetrating the outer periphery of the scroll body so as to allow the space of the flow passage-forming member to communicate with the outside.

A power tunnel comprises a tube body, an inlet, and an outlet. The tube body provides space to accommodate gases, liquids, people, vehicles, etc. The power tunnel can be used for energy storage, power generation, air-raid shelter, or other purposes.

The present invention provides a heat engine operating on a novel closed thermodynamic cycle. The primary characteristics of the heat engine comprise a boiler, condenser, liquid pump, and a regenerative expander in which heat is recovered from the expansion / work extraction process to be returned to the sensible heat addition process that occurs between the condenser outlet and the boiler inlet. The regenerative expander may be comprised of a novel turbine design described as part of the present invention. The primary characteristic of the turbine being a rotor consisting of a hub intersected by a plurality of narrow helical channels through which motive fluid is directed by a plurality of nozzles to induce rotation in the same direction as the helical path of the channels. The liquid pump of the heat engine may also be comprised of a novel design based on similar working principles to the above turbine.

A fluid-driven power generation unit, may include two sets of airfoils disposed on opposite sides of the power generation unit with their leading edges facing a windward end of the power generation unit; a body element having a curved front face and a back disposed, wherein at least a portion of the elongate body element is disposed between the first and second set of airfoils; and a power generation unit disposed in alignment with the body element, the power generation unit including at least a housing, and a turbine and an electrical generation unit actuated by the turbine disposed within the housing. As a fluid flows across the airfoils, the lifting force of the airfoils causes a reduced pressure within the power generation unit, drawing air past the turbine, through the body element and out the back of the body element, thereby extracting power from this secondary fluid flow stream.