Abstract: A fan module includes a framework and at least two blade assemblies arranged inside the framework. Each blade assembly includes at least two blade units arranged in line. The rotating direction of each blade assembly is opposite to that of adjacent blade assembly.

Abstract: The present invention relates to the field of blades, particularly fan blades, intended for turbojets, particularly of the aeronautical type. Its objective is to provide a fan blade the features of which will enable the number of fan blades to be reduced while at the same time providing satisfactory performance. According to the invention, the fan blade comprises a plurality of aerodynamic parts which are superposed in a radial direction Z and the number of aerodynamic profiles varies from one aerodynamic part to the other.

Abstract: A pneumatic hybrid turbo transmission for reduced energy consumption is disclosed. A pneumatic hybrid turbo transmission configured as a multi-purpose unit (MPU). The MPU recovers energy from the cooling system, exhaust system, ram pressure and the breaking system. The MPU unit is an automatic transmission, supercharger, air compressor for other uses, and starter for the engine using a multi-purpose unit that will eliminate the need for a torque converter or clutch, flywheel, catalytic converter, starter and supercharger. The MPU reduces pollution to near zero and reduces the aerodynamic drag coefficient on the vehicle. The MPU uses two or more in-line compressors to transfer power from the power source, such as an internal combustion engine (ICE) to a turbine or multi-stage turbine that acts as an automatic transmission. The pneumatic hybrid turbo transmission system uses plug-in power as a second source of power.

Abstract: A multi-blade fan including a spirally-shaped casing having an inlet and an outlet; an electric motor disposed inside the casing; a main plate provided perpendicular to a rotation axis of the electric motor and having a ventilation hole; first blades disposed at a side of the inlet of the main plate; and second blades disposed at an opposite side of the inlet of the main plate. Herein, a diameter of the main plate is smaller than an outer diameter of the first and second blades and is larger than an inner diameter of them. Furthermore, an outlet angle of any one or both of the first blade and the second blade is sequentially changed in an axis direction.

Abstract: A wind turbine having a cooling system, which wind turbine includes a nacelle in connection with which one or more wind turbine components are arranged, is disclosed. The cooling system includes at least one cooling circuit arranged to lead a heat transfer medium to and from one or more of the wind turbine components, at least one cooling device arranged to cool the heat transfer medium, at least one pump arranged in connection with the at least one cooling circuit to circulate the heat transfer medium in the cooling circuit, and at least one medium tank arranged in connection with the cooling circuit. The at least one medium tank is arranged inside the nacelle.

Abstract: The invention provides wind energy use. One application provides wind energy use for water harvesting from natural humid air. The method is based on changing thermodynamic state properties of ambient airborne wind passed through a convergent-divergent system. The device comprises a cascade of sequentially arranged wind converging and wing-like components. Those components transform the wind into fast, cooled, out-flowing air portions. The decrease in static pressure and temperature triggers condensation of water-vapor into water-aerosols. Another application of the method provides an effective mechanism for harvesting electrical energy from naturally warm air using renewable wind energy, including the wind inertia, internal heat, and potential energy stored in the air mass in the Earth's gravitational field. The electrical energy harvesting mechanism is also applicable to use of natural renewable energy of streaming water.

Abstract: According to some embodiments, a method and system are provided to receive an airflow at a blower fan via an axial fan, and expel the airflow via a blower fan. The blower fan comprises a hub associated with an axis of rotation, and the axial fan comprises the hub.

Abstract: A horizontal axis wind turbine rotor assembly utilizes rotor blades having the aerodynamic characteristics of low aspect ratio lifting bodies. The aerodynamic characteristics of low aspect ratio lifting bodies at typical operating wind velocities permits high energy conversion efficiencies throughout a wide range of wind speeds.

Abstract: A fan-turbine rotor assembly (24) includes one or more turbine ring rotors (32). Each turbine ring rotor is cast as a single integral annular ring. By forming the turbine as one or more rings, leakage between adjacent blade platforms is minimized which increases engine efficiency. Assembly of the turbine ring rotors to the diffuser ring (114) includes axial installation and radial locking of each turbine ring rotor.

Abstract: A two-stage, omnidirectional vertical axis wind turbine includes a first chamber in which a plurality of angularly spaced horns guide wind from any side of the wind turbine into a chamber to rotate a first rotor. Wind exiting the first rotor passes through a diverter to produce laminar flow. A fan attached to the shaft intercepts this laminar flow to add additional torque to the shaft.

Abstract: A wind turbine includes a nacelle mounted atop a tower. Power generating components are housed within the nacelle. A rotor hub is rotationally coupled to the power generating components. A plurality of blades are fixed to the rotor hub. The blades include a root section extending radially outward from the rotor hub and an aerodynamic section extending radially outward from the root section, wherein lift is generated by the blades primarily along the aerodynamic section. Aerodynamic fins extend radially outward from the rotor hub alongside the root sections of the blades and have an aerodynamic shape so as to capture wind and impart rotational torque to the hub from a central impinging wind zone that is coaxial to the rotor hub and the blade root sections.

Abstract: A wind energy conversion apparatus includes a supporting structure. The apparatus further includes a shaft having a first and a second end, which is rotatably journalized in the supporting structure, as well as at least one rotor blade having a first end and a second end, which rotor blade is mounted on the shaft with both ends.

Abstract: A fan shaft seat structure including a shaft bushing and a heat dissipation member. The shaft bushing has an open end, a closed end and a, connection section. A receiving space is defined between the open end and the closed end. The connection section extends from the closed end in a direction reverse to the receiving space. The heat dissipation member has a first face and a second face. The first face is flush with a first end of the connection section in contact with the closed end of the shaft bushing. The second face is flush with a second end of the connection section. The shaft bushing is integrally connected with the heat dissipation member to increase heat dissipation area and save working time and manufacturing cost as well as achieve better heat dissipation effect.

Abstract: A connection structure is applied to a serial fan assembly, which includes an upstream fan and a downstream fan. The upstream fan and the downstream fan have different sizes. The connection structure connects the upstream fan and the downstream fan so that the upstream fan and the downstream fan are arranged in series. The connection structure has a housing, a base and a plurality of ribs for connecting the base, and the housing is formed with an air guiding passage and a chamber. The upstream fan or the downstream fan is accommodated in the chamber or the air guiding passage is located between the upstream fan and the downstream fan.

Abstract: An impeller for a supercharger cast in molds to provide excellent aerodynamic performance by eliminating parting-line corresponding parts from a hub surface and vane surfaces in each space formed of a pair of long vanes adjacent to each other an a method of manufacturing the impeller. The method comprises a step for casting the impeller in the molds. Molten metal is poured in spaces formed by radially arranging, toward a center axis, the plurality of slide molds each having a short vane-shaped bottomed groove part and a shape for the space between the pair of long vanes adjacent to each other to mold the impeller. Then, the slide molds are moved in the radial direction of the center axis while rotating for mold-releasing. Thus, the impeller for the supercharger having no parting-line corresponding parts on both the hub surface and the vane surfaces in each space formed of the pair of long vanes adjacent to each other can be provided.

Abstract: An impeller (10) for a cooling fan includes a hub (20) having a circular wall (22) and an annular sidewall (24) extending downwardly from a rim of the circular wall, and a plurality of blades (30) extending radially from the sidewall of the hub. Each of the blades includes a first portion (32) near the hub and a second portion (34) away from the hub, wherein each of the first portions is identical to an adjacent one of the first portions, and each of the second portions is different from an adjacent one of the second portions regarding a height thereof, thereby reducing a noise level of the impeller when the it operates.

Abstract: An axial fan is provided. The axial fan includes a base, a rotor, a guide and a plurality of blades. The guide connects to a guide tube to provide airflow. Each blade has a passive part and an active part, wherein the passive part is driven by the airflow from the guide to rotate the active part synchronously. The axial fan increases air quantity and decreases air pressure to provide efficient heat dissipation.

Abstract: A centrifugal fan includes a housing defining an inner space therein and an impeller rotatably received in the inner space of the housing. The impeller includes a hub, a blade ring surrounding the hub, a plurality of first blades extending from the hub to the blade ring, and a plurality of second blades extending from the blade ring. Each first blade includes an inner portion between the hub and the blade ring, and an outer portion extending from the blade ring. The second blades and the outer portions of the first blades are arranged in alternating fashion along a circumferential direction of the blade ring. In each pair of an outer portion and an adjacent second blade, the outer portion and the second blade are curved outwards away from each other toward substantially opposite directions.

Abstract: The invention relates to a turbine blade comprising a vane that runs along a blade axis and a platform region, located at the root of the vane having a platform that extends transversally to the blade axis. The aim of the invention is to configure a delimitation of a flow channel of a gas turbine in the simplest possible manner. Therefore, the platform is configured by an elastic sheet metal part that rests on the vane. Said part leads to a gas turbine comprising a flow conduit that runs along an axis of the gas turbine, said conduit having an annular cross-section for a working medium and a second vane stage that is situated downstream of a first vane stage, which runs along the axis.

Abstract: Turbine comprising a tubular body that receives an upstream stator, a rotor including a propeller and a downstream stator. The trailing edge of the blades of the upstream stator is inclined through a negative angle relative to a normal relative to the axis, and the leading edge of the blades of the propeller is inclined and rounded in an incline directed downstream. The rotational mounting of the propeller in the turbine involves a fixed shaft installed in the upstream and downstream stators, and which carries an upstream bearing bush and a downstream bearing bush, close to the end of the location of the propeller, and a stop formed by a crown of support pins in an upstream and downstream direction. The propeller comprises a tubular hub through which the fixed shaft extends and which has a bearing bush at each end in order to co-operate at the same time with the corresponding bearing bush of the fixed shaft and with the corresponding peripheral stop.

Abstract: An impeller is provided that may be used in compressors or turbines. In another aspect of the present invention, a fiber or a bundle of fibers is woven to form at least two blades of an impeller. Yet another aspect of the present invention employs a peripheral component woven around impeller blades. An additional conductive fiber or bundle of fibers is woven into the impeller in a further aspect of the present invention. Moreover, an aspect of the present invention provides a chilling system that includes at least one compressor, at least one wave rotor, and a refrigerant.

Abstract: A wind power turbine includes a frame, a drag-type fan unit and a lift-type fan unit. The frame has a base, a shaft, an electricity generator and a plurality of air-guiding vans. The air-guiding vans are disposed on the base, and the shaft has one end connected to the electricity generator. The drag-type fan unit has a plurality of drag-type blades coupled to an outer circumference of the shaft. The lift-type fan unit has a plurality of lift-type blades disposed around the drag-type blades. Each of the air-guiding vans has a first side and a second side, and the first and second sides are parallel to the shaft. An air inlet is formed between the first sides of adjacent two of the air-guiding vans, and an air outlet is formed between the second sides of adjacent two of the air-guiding vans. The air inlet is larger than the air outlet.

Abstract: A two blade row inducer for a low pressure pump in a turbopump of a rocket engine. The inducer includes a first set of blades and a second set of blades or partial blades in which the partial set of blades is covered with a shroud and the shroud includes a row of turbine blades extending outward to form a turbine to drive the inducer. The first set of blades is spiral or screw thread blades that end just upstream from the leading edges of the second set of blades covered with the shroud. In another embodiment, the screw thread blades can extend toward the aft end of the inducer and in-between adjacent partial blades in which the shroud also covers the aft ends of the screw thread blades. A second fluid reacts with the turbine blades to rotate the inducer and pump the first fluid.

Abstract: A compressor impeller 2 has a plurality of long blades 2a and short blades 2b alternately arranged in a circumferential direction, and an inner surface of a compressor housing 10 is provided with an annular groove 12 which surrounds vicinities of leading edge tip portions of the short blades 2b in a circumferential direction and is concave outward so as not to communicate with a suction port of a compressor.

Abstract: A fan-turbine rotor assembly (24) for a tip turbine engine (10 )includes a fan hub (64) with an outer periphery (112) scalloped by a multitude of elongated openings (114) which extend into a fan hub web (115). Each elongated opening defines an inducer receipt section (117) to receive an inducer section (66)and a hollow fan blade section (72). An inducer exhaust from each inducer section is located adjacent a core airflow passage (80) within each fan blade section to provide communication therebetween.

Abstract: A tip turbine engine (40) provides a peripheral combustor (30) with a more efficient combustion path through the combustor and through the tip turbine blades (34). In the combustor, the core airflow is received generally axially from compressor chambers in hollow fan blades (28) and then turned radially outwardly into a combustion chamber (112), where it is then mixed with the fuel and ignited. The combustor has a combustion path extending axially from a forward end of its combustion chamber through a combustion chamber outlet (122) and through a turbine (32) mounted to the fan. Thus, when the core airflow begins to expand in a high-energy gas stream, it has a substantially axial path from the combustion chamber through the turbine.

Abstract: The invention broadly comprises a torque converter including: a core ring; a turbine blade connected to the ring and having a perimeter with a segment facing an outer surface of the ring and disposed proximate the outer surface; and joining material fixedly connecting less than the entirety of the segment to the outer surface. The segment is fixedly connected to reduce resonance in the turbine. In some aspects, the ring includes an inner surface oppositely disposed from the outer surface and an open path between the surfaces. The present invention broadly comprises a notched turbine blade and a core ring with a discontinuity in an outer surface arranged to block capillary action for flowable joining material disposed in an interface between a turbine blade installed on the ring and the outer surface. The invention also broadly comprises a method for controlling resonance of a turbine in a torque converter.

Abstract: A hybrid type vertical shaft turbine (1) for wind power generating devices, includes a supporting structure (2) supporting, concentrically and axially spaced, an internal rotor (3) made of Savonius blades (4) and an external rotor (5) made of Darrieus blades (6), wherein the shaft (7) has the bottom end (12) which may be connected to an electric generator for transforming wind energy into electric energy, wherein both the internal Savonius rotor (3) and the external Darrieus rotor (5) have twisted blades with identical or different values in the axial direction of the turbine. The Savonius blades extend between end flanges (8, 9) to radial arms (10, 11) equispaced in each flange (8, 9) and offset between the flanges (8, 9) to accommodate the external Darrieus blades. The proposed twistings allow considerably improving the continuity of the driving torque generated with the wind velocity increasing towards medium-low, medium and medium-high velocities and vice versa.

Abstract: A blade row for a rotary machine includes a radially inner endwall, a radially outer endwall having a radially inner surface, and an airfoil including a root section coupled to the inner endwall and a tip section coupled to the outer endwall such that the airfoil extends radially between the inner and outer endwalls. The radially outer endwall includes a projection extending radially inward from the outer endwall inner surface such that the outer endwall inner surface includes a non-axisymmetric shape.

Abstract: This is related to a fan including a casing, a first impeller structure, a second impeller structure, and at least one driving device. The casing has an outlet and an air-containing portion having an entrance and an exit provided inside the casing. The first impeller structure and the second impeller structure are installed inside the casing, and include a first blade set and a second blade set, respectively. The first blade set is located corresponding to the entrance of the air-containing portion. The second blade set is located corresponding to the exit of the air-containing portion. The driving device drives the first and second impeller structures.

Abstract: A fan includes a fan blade wheel and a fan frame. A fan wheel seat is disposed at the center of the air outlet of the fan frame and the air outlet faces a heat generating component. An air inlet of the fan frame is disposed opposite to the air outlet. The fan wheel has a hub with first blades and projections extending radially from the circumferential side of the hub. The projections are disposed between every two of the first blades alternately such that it is auxiliary for guiding airflow outward the fan smoothly. Hence, air pressure at the air outlet increases greatly for enhancing effect of heat dissipation effectively.

Abstract: A gas turbine engine includes a radial compressor having first and second blades. The first blade has a tuned leading edge that prevents either blade from exciting at a natural frequency at speeds within an expected operating speed range.

Abstract: A suction stage for a pump with a centrifugal wheel, the suction stage including a rotational impeller equipped with a hub and arranged upstream of the centrifugal wheel, the suction stage further including a diffuser arranged between the impeller and the centrifugal wheel, the diffuser including a plurality of blades. The hub has a downstream surface extending axially so as to converge toward the centrifugal wheel, and the blades of the diffuser have free ends, the blades protruding radially toward the downstream surface.

Abstract: A vacuum pump (100) comprises a first set (106) of turbo-molecular stages, a molecular drag stage (112), a first inlet (120) through which fluid can pass through the first set (106) of stages and the molecular drag stage (112) towards a pump outlet (116), second and third sets (108, 110) of turbo-molecular stages located between the first set (106) and the molecular drag stage (112), a second inlet (122), the second and third sets (108, 110) being arranged such that fluid entering the pump through the second inlet (122) is separated into two streams each flowing through a respective one of the second and third sets (108, 110), and conduit means (126) for conveying fluid passing through the first set (106) and one of the second and third sets (108, 110) towards the outlet (116).

Abstract: A heat dissipation device includes a heat sink and a cooling fan. The heat sink includes a substrate and a plurality of fins. The cooling fan includes a fan housing defining an air inlet and an air outlet at two opposite sides thereof, and an impeller received in the fan housing and mounted to a supporting base provided at the air inlet. The air outlet is positioned adjacent to the heat sink. The impeller includes a hub, a plurality of main blades and auxiliary blades. The hub includes a top wall located at the air outlet and a sidewall extending from the top wall. The main blades extend radially and outwardly from the sidewall. The auxiliary blades located on the top wall extend from a center of the top wall towards an outer periphery of the top wall.

Abstract: A drain pump is provided that reduces the operating noise when the head is low. The drain pump has a pump casing, and an impeller. The pump casing has a drain inlet for sucking in drain water at a lower end part and a drain outlet for discharging drain water at a side part. The impeller has a shaft part disposed extending in a vertical direction inside the pump casing, a main blade disposed on the outer circumferential side of the shaft part, an auxiliary blade disposed on the lower side of the main blade, and a disc shaped dish part disposed between the main blade and the auxiliary blade. The dish part has an annular partition part extending upward from the outer circumferential edge part of the main blade, which is disposed at a position lower than the upper end part of the partition part.

Abstract: An impeller in a centrifugal fan includes a support portion having a cylindrical outer circumferential surface coaxial or substantially coaxial with a center axis and a plurality of moving blades arranged on the outer circumferential surface of the support portion independently of one another and configured to draw an air along the center axis and expel the air radially outwards when rotated about the center axis together with the support portion. At least one of the moving blades includes a first blade portion connected to, and extending radially outwards from, the outer circumferential surface of the support portion, at least one second blade portion having a radial inner end portion radially spaced apart from the outer circumferential surface of the support portion and a connecting member arranged to interconnect the first blade portion and the second blade portion.

Abstract: The invention relates to a turbine blade comprising a vane that runs along a blade axis and a platform region, which is located at the root of the vane having a platform that extends transversally to the blade axis. The aim of the invention is to configure a delimitation of a flow channel of a gas turbine in the simplest possible manner. Therefore, the platform is configured by an elastic sheet metal part that rests on the vane. Said part leads to a gas turbine comprising a flow conduit that runs along an axis of the gas turbine, said conduit having an annular cross-section for a working medium and a second vane stage that is situated downstream of a first vane stage, which runs along the axis.

Abstract: Embodiments include apparatus and methods of fluid energy conversion. One embodiment relates to a tube for a fluid energy converter. The tube may include a generally cylindrical and hollow body having an interior surface, an exterior surface, and a longitudinal axis. Another embodiment includes a fluid energy converter having a longitudinal axis and a rotatable tube coaxial about the longitudinal axis. In some embodiments, the rotatable tube converts kinetic energy in a fluid into rotating mechanical energy, or converts rotating mechanical energy into kinetic energy in a fluid.

Abstract: A ventilation assembly for a wind turbine rotor hub is provided, the ventilation assembly comprising a frame fixedly mountable to the rotor hub, the frame including at least one opening, and a cover for said at least one opening, the cover being mounted to said frame to be freely rotatable with respect to said frame, wherein the cover has at least one ventilation opening to allow the ingress and egress of air and has a shielding member for shielding the at least one ventilation opening against ingress of liquid running down the rotor hub.

Abstract: An impeller applied to a centrifugal fan includes a base plate, a hub and a plurality of first blades. The hub is connected to the base plate and the first blades are disposed on the base plate with respect to the hub as a center. Furthermore, the hub has a plurality of second blades disposed around its outer wall to enhance its performance. A centrifugal fan including the impeller is also disclosed.

Abstract: An impeller pump including a body and a cover assembled onto the body to form a housing. The body has a fluid inlet and a fluid outlet and an opening for receiving a rotating drive shaft. An impeller is rotatably positioned in the housing with paddles at a periphery thereof. The impeller includes a sleeve with a central pocket formed therein for receiving a drive shaft, a circumferential support ring, and a plurality of radially extending paddles extending from the circumferential support ring. The body and cover define an annular space circumferentially extending around an interior of the housing for receiving the paddles of the impeller. The cover has a wall portion enlarging the annular space in the housing through a portion of the circumference of the annular space.

Abstract: An indoor unit of an air conditioner capable of enhancing heat exchange efficiency and reducing noise/vibration is provided. The indoor unit includes a main chassis, a front panel, a cross-flow fan, a fan motor, a heat exchanger, and a discharge port. The main chassis has a backside fixed on a place to be installed. The front panel is formed on the front of the main chassis and has a spacer formed in an inside thereof. The cross-flow fan is disposed in the inside of the space and provided in plurals on the same shaft. The fan motor provides rotational power to the cross-flow fan. The heat exchanger is formed on the front of the cross-flow fan with respect to the flowing direction of air. The discharge port guides discharge of the air blown from the cross-flow fan.

Abstract: The described embodiments relate to fans units. One exemplary fan unit includes a housing supporting a motor. The fan unit also includes an impeller coupled to the motor and configured to be rotated by the motor.

Abstract: A method to introduce a deliberate mismatch into a turbomachine bladed wheel so as to reduce vibration amplitudes of the wheel in forced response. The method includes a step of determining an optimum value of the standard deviation for the mismatch as a function of operating conditions of the wheel inside the turbomachine, with respect to the maximum vibration amplitude response required on the wheel. The method further includes a step of at least partly placing blades with different natural frequencies on the wheel such that the standard deviation of the frequency distribution of all blades is equal to at least the mismatch value, the mismatch value being determined statistically.

Abstract: An indoor unit for an air conditioner capable of performing cooling and heating, as well as ventilation functions as a single unit is provided. The indoor unit includes a main chassis, a ventilation port, a cross-flow fan, a side fan, and a ventilation duct. The main chassis is installed on a mounting portion and composing its exterior. The ventilation port formed to pass through the main chassis for inletting and exhausting air. The cross-flow fan is installed on one side of the main chassis to blow air in a direction perpendicular to its rotating shaft. The side fan is formed next to the cross-flow fan. The ventilation duct is connected to the ventilation port of the main chassis to ventilate the air forcibly blown by the side fan.

Abstract: Exhaust apparatus for exhausting “dirty” exhaust gases accept a core flow of such exhaust gases and combine that with an annularly-surrounding “rooftop” flow of ambient air for diluting the exhaust gases as well as expelling the diluted flow in a forcibly expelled plume in order to ensure that the “effective” expulsion distance of the expelled diluted flow is at least the physical length of the exhaust apparatus plus the gains gotten from efflux velocity and flowrate.

Abstract: A centrifugal blower includes a scroll casing defining a scroll passage having a suction port and a discharge port. A fan member is disposed rotatably in the scroll casing, and the fan member is rotated by a motor. The fan member includes a plate member having at least a first circular plate portion and a second circular plate portion which are arranged in an axial direction to have a step shape in cross section, and a plurality of blades which are arranged at an outer peripheral portion of the plate member and extend in the axial direction. Furthermore, the plate member is arranged to change a flow direction of air drawn by the fan member from the suction port in an axial direction, to a radial outside. Because the plate member is arranged in the step shape in cross section, fan noise due to disturbed air flow can be restricted.

Abstract: A cylindrical rotor with internal blades, configured by a ring of variable diameter and length according to necessity, as well as the blade quantity, pitch, surface and angle in its interior, being the assembly made of different materials.

Abstract: A liquid turbine device including a turbine wheel, in which the turbine wheel includes more than one set of blades in radial succession.