Abstract: A fan assembly for use in an electronic device is provided. The fan assembly includes a housing, a fan, a throttle valve, and a regulator. The housing has an outlet. The fan is disposed in the housing and adapted to provide an air current. The air current generates an air volume through the outlet. The throttle valve is movably disposed in the housing at the outlet. The regulator is connected to the throttle valve to control the movement of the throttle valve to adjust the size of the outlet.

Abstract: A centrifugal pump having a casing axially divided into two casing halves; an intake and a discharge; as well as an at least one-stage flow channel between the intake and the discharge for a medium to be pressurized; and a shaft mounted for rotation within the casing and being driven by motor; at least one impeller attached thereon and arranged in a stage channel of the flow channel; and at least one guide device on a partition wall arranged within the stage channel in the region of the intake of the associated impeller.

Abstract: A pump, in particular a centrifugal pump, includes at least one flow-leading part with an at least regional surface layer (50) of an elastomer. The flow-leading part with the surface layer (50) is formed as a multi-component injection moulded part, with a base structure (55) made of plastic as a first component, and with the elastomer as a second component.

Abstract: A compressor comprises an impeller wheel mounted within a housing defining an inlet and an outlet. The wheel has a plurality of vanes and is rotatable about an axis. The housing has an inner wall defining a surface located in close proximity to radially outer edges of the impeller vanes which sweep across said surface as the impeller wheel rotates about its axis. The inlet comprises a tubular wall extending away from the impeller wheel in an upstream direction. An enclosed chamber is defined between said inner wall and an outer wall and in communication with at least one opening in said in said inner wall. The outer wall is penetrated by at least one ventilation aperture that is designed to be connected via a conduit to a location upstream of the inlet and downstream of an air filter. The arrangement maintains the advantages of a conventional MWE structure and further improves the surge margin. In addition, the risk of debris being drawn into the compressor via the opening is eliminated.

Abstract: An impeller plate of an impeller of a centrifugal pump, particularly a channel impeller pump, for pumping liquids with solid or gaseous admixtures, is provided with at least one wide vane that is displaced toward the impeller drive by a distance D so that the impeller chamber is enlarged by a rearward portion thereof. In addition, the impeller comprises at least one auxiliary vane having a center width at between 25%-75% of the width of the wide vane. This arrangement improves particularly the gas transporting ability of the pump.

Abstract: An impeller with hybrid blades can be used in any blowers, which are applied in many fields such as cooling computers and HVAC. The impeller increases air flow as well as pressure. Each hybrid blade extends from the impeller hub with the shape of an axial fan blade and smoothly transforms at a proper radius of the impeller to the shape of a centrifugal blower blade. In addition, a dual-tunnel blower with multiple outlets is also presented.

Abstract: Device for discharging a fluid (5) fed into a reaction chamber (1) containing solid particles fluidized by said fluid, through a rotary chamber (100) provided with a finned wheel (13) having fins (14), which may deliver into said reaction chamber the solid particles that are concentrated along the rotary circular wall (8) of said rotary chamber under the effect of the centrifugal force, and processes for the catalytic polymerization, combustion, gasification, drying, impregnation, coating or other treatments of solid particles in suspension in a fluid or for the cracking, dehydrogenation or other catalytic conversions of a fluid using this device.

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: A centrifugal pump with a volute and at least one stage with an associated impeller and removable diffuser assembly comprises: multiple diffuser segments, each diffuser segment comprising a central passage from an inner curvilinear surface to an outer curvilinear surface and a curvilinear leading engagement surface between a leading end of its curvilinear inner surface and its curvilinear outer surface; multiple curvilinear volute mounting surfaces within the volute, each curvilinear mounting surface receiving a corresponding diffuser segment to mount the diffuser segments in a generally annular pattern about the impeller to form the removable diffuser assembly, with the curvilinear inner surface of each diffuser segment proximate an outer periphery of the impeller and the curvilinear leading engagement surface of each diffuser segment engaging a trailing portion of the curvilinear outer surface of an adjacent one of the diffuser segments; and a volute connecting passage within the volute for coupling the cen

Abstract: The present invention provides a compressor housing capable of reducing the weight of a compressor without leading to an increase in the size and a reduction in the efficiency of the compressor. The compressor housing includes: an inner cylinder made of a plastic material and extending in an axial direction and in a circumferential direction to surround blade tips of the blades; and an outer cylinder made of a plastic material and extending in the axial direction and in the circumferential direction to surround the inner cylinder. The inner cylinder and the outer cylinder are bonded or jointed at the first end, opposite the second end where the volute is formed.

Abstract: The present invention relates to a multiple-stage centrifugal pump of inline design, comprising a connection housing (1) with connectors (2, 3) in the form of suction and pressure connectors, and a pump body (4). The pump body (4) is surrounded at a spacing by a casing tube (6) with the formation of a flow-guiding annular space (5). The pump body (4) and the casing tube (6) are fastened so as to transmit force between the connection housing (1) and a head piece (7), the head piece (7) is provided with a leadthrough for a motor-driven pump shaft (8), and the connection piece (1) is provided with a separating wall (9) which divides the suction and pressure regions, a flow-diverting guide element (10) being arranged in the transition region between the annular space (5) and a connector (3).

Abstract: The backpack Multi-Blower provides for the first time an apparatus that is unique in that one person manipulates two separate air discharge tubes in either different or unified positions simultaneously at debris. This multi-blower generates air from separate chambers inside the housing having their own discharge air outlet, thereby creating more combined volume as well as the ability to diversify how the air is directed, they're by blowing with greater ease, control, efficiency and effectiveness. Man-hours reduced significantly in that one person using the multi-blower removes the need for a second man to accompany with separate single port blower. Time saved in that one person coordinates two blower tubes, verses the old way of two people trying to think together in a fluid flow of movement as to effectively moving the debris together. These few listed benefits provide a blower apparatus that has improved drastically its function and use, which will save time, money and man-hours.

Abstract: The invention relates to a variable turbine geometry (28) of an exhaust gas turbocharger (2) of a motor vehicle, with a fixed guide blade ring (20) and an axially moveable control blade ring (15), wherein an axial relative position of guide blades (21) of the guide blade ring (20) to control blades (15) of the control blade ring (13) defines the size of inflow cross sections to a turbine wheel (11) of the exhaust gas turbocharger (2), and wherein the guide blades (21) and the control blades (15) extend in directions opposite to each other as far as to their respective free ends (18) and the control blades (15) are arranged on a cross carrier of the control blade ring (13), which as a function of the axial relative position opens, partially opens or closes additional inflow paths (29) for the enlargement or the reduction of the inflow cross sections.

Abstract: A compact, single shaft gas turbine gas generator uses a high pressure ratio dual-entry single stage centrifugal compressor, can combustors, and a radial inflow turbine with the compressor configured to achieve an overall pressure ratio of about 12:1 or greater and Mach Numbers less than or equal to about 1.4. The radial inflow turbine is configured to provide an expansion ratio of about 4:1 to about 5:1, to provide partially expanded combustion gases to a free-power turbine or an expansion nozzle, in a work-producing engine configuration. A ball bearing assembly in front of the compressor is used in conjunction with a thrust piston assembly to take up turbine thrust load, while a radial tilt pad bearing assembly is used in front of the turbine. A collector with scroll-shaped sector portions collects compressed air from an annular vaned diffuser, and respective crossover ducts channel the collected diffused compressed air from each sector portion to a plenum feeding can combustors.

Abstract: One embodiment includes an apparatus for a vehicle that includes a heating, ventilation and air conditioning (“HVAC”) shell having a plurality of openings therein, a fluid distribution ring mounted for coaxial rotary movement within the HVAC shell, the fluid distribution ring having one or more apertures therein to align with the plurality of openings in the shell to put openings in fluid communication with an inner chamber and a mechanism coupled to the HVAC shell and the fluid distribution ring to rotate the ring relative to the HVAC shell between selected rotary positions to provide fluid flow paths through the inner chamber and those openings in the HVAC shell that are aligned with the one or more apertures in the fluid distribution ring.

Abstract: A centrifugal pump (10) includes a pump casing (12) within which an impeller (14) is mounted for rotation, cantilever fashion, on a shaft (16). The casing (12) has an axial inlet (20), and a peripheral volute (22) around the impeller (14) leading to an outlet (24). The impeller (14) has axially spaced annular sides (26, 28) with radially outwardly arranged, rearwardly curved, vanes (30) between the sides. Outwardly of the sides, clearing corresponding sides of the casing (12), auxiliary vanes (32, 34) are provided to generate a pressure gradient to prevent or counteract leakage of working fluid. Leading faces of the auxiliary vanes slope relative to a perpendicular to the sides, i.e. the leading edges are at an obtuse angle to the sides (26, 28).

Abstract: A diffuser-nozzle assembly mounted at the outlet from a centrifugal compressor comprising a plurality of vanes carried by a radially inner wall forming a surface of revolution and surrounded by an outer casing, elastically deformable means being interposed between the radially outer ends of the vanes of the nozzle and the outer casing, these means preventing air from passing between the outer casing and the radially outer ends of the vanes.

Abstract: The present invention relates to a method of and an apparatus for feeding gaseous or liquid fluid into a medium. The method and apparatus in accordance with the present invention are especially suitable in various fields of industry for mixing gaseous and liquid chemicals and steams into a flow containing at least liquid. The method and apparatus in accordance with the present invention are most preferably suitable for feeding steam into the fiber suspensions of wood processing industry.

Abstract: A low-restriction turbine outlet device (200) includes a housing (202) having an internal volume (208). The internal volume (208) includes an inlet transition portion (230) and an outlet transition portion (232). An inlet port (204) that is formed in the housing (202) is in fluid communication with an outlet port (206) that is also formed in the housing (202). A mounting flange (216) is connected to the housing (202), a first set of stiffening ribs (218) and a second set of stiffening ribs (220) each connect the mounting flange (216) to the housing (202).

Abstract: A blower unit includes a rotation shaft, a centrifugal fan and a casing. The centrifugal fan has blades arranged around the rotation shaft. The casing has a wall part defining an opening. The ring part has a ring shape having a center coinciding with an axis of the rotation shaft. The ring part is provided at first axial ends of the blades and support the blades. The ring part includes an arcuate wall curved in a radially inward of the centrifugal fan. The centrifugal fan is housed in the casing such that the arcuate wall of the ring part is located radially inside of the opening of the wall part.

Abstract: A single ended or double-ended blower includes a blower motor assembly supporting opposed first and second shaft ends. The first and second shaft ends have respective first and second impellers attached thereto and enclosed within first and second volutes, respectively. The first volute is connected to an inlet and the second volute is connected to an outlet. The blower motor assembly is supported in a chassis enclosure. A radially outer inter-stage path is between the first and second volute. The second volute is at least partially substantially concentrically nested with the radially outer inter-stage gas path.

Abstract: A turbine housing (13) for a radial flow turbine, particularly a turbine used in an exhaust gas turbocharger. The housing has a general volute shape with a substantially annular part extending around the turbine axis and an inlet duct (20) extending therefrom. The inlet duct (20) has a first wall facing part of the outer surface of the annular part of the housing, a pair of spaced webs (44) extending from the outer surface of the circular part of the housing to the first wall, the webs defining a valley (45) therebetween. The arrangement renders the housing stiffer and less prone to fatigue cracking.

Abstract: A multi-blade centrifugal fan for preventing circular flows in the end portions of an impeller in the axial direction is provided in a simple structure. The multi-blade centrifugal fan is formed of a fan casing 1 of a scroll type and a multi-blade centrifugal impeller 2. The fan casing 1 has a bellmouth 4 which becomes an air intake. The multi-blade centrifugal impeller 2 has a number of annularly arranged blades 6 inside the fan casing 1. The centrifugal impeller 2 draws in air through the intake 7, which faces the bellmouth 4, and blows out the air in the centrifugal direction through the blades 6. A retainer ring 10 is provided in an outer peripheral end portion of the impeller 2. A cylindrical body 11 is integrally provided in such a manner as to extend from the outer end of the retainer ring 10, so that circular flows toward the intake side are prevented in the end portions of the impeller 2.

Abstract: The invention relates to a blower wheel, especially a plastic blower wheel for a cylindrical rotor radial fan for the heating and air-conditioning systems of a motor vehicle. Said blower wheel comprises a plurality of blades (2), and the flow channel (3) between two blades (2) is embodied in such a way that it is convergent on the inflow side, divergent on the outflow side, and distinctively shaped.

Abstract: The present invention relates to a centrifugal pump and a method of varying the properties of a centrifugal pump. The centrifugal pump has a pump housing, which in the preferred form comprises a front casing 22 and a back casing 24. The pump also includes an impeller 26. The present invention provides the centrifugal pump with one or more grooves 29 in the housing adjacent the impeller 26. The one or more grooves are adapted to removably receive a cutwater 28.

Abstract: A cooling fan includes a frame (100) and an impeller (200) having a plurality of blades (240) disposed in the frame (100). The frame (100) has a cap (120) with an air inlet (122), a base (140) and a sidewall (160) extending from a periphery of the base (140) with an air outlet (180) defined therein. The cap (120) is mounted on the sidewall (160) with a chamber formed between the cap (120), the base (140) and the sidewall (160). A curved tongue portion (190) is formed on the sidewall (160) in vicinity of the air outlet (180). A protrusion (124) is formed on the cap (120) in vicinity of the curved tongue portion (190) and protrudes into the air inlet (122).

Abstract: The present invention is generally directed to an apparatus providing real time adaptive active fluid flow cooling, for cooling an electronic system, an electronic system utilizing the same, and a method for providing real time adaptive active fluid flow cooling. The electronic system consists of a circuit board having a heat generating component, a heat dissipating element mounted to the heat generating component and an apparatus for providing real time adaptive active flow cooling. The apparatus consisting of a plurality of active cooling devices that remove heated air or fluid with ambient air or fluid by propelling an fluid flow stream in a first direction toward the heat dissipating element, and where at least one active cooling device contained in the plurality of active cooling devices propels an fluid flow stream in a second direction toward the heat dissipating element.

Abstract: In a centrifugal compressing apparatus, a height of a blade of an impeller is made to decrease gradually from a front edge thereof to a rear edge thereof, and a rate of change of the height of the blade is relatively large near the rear edge. The height of the blade can be made large at the rear edge side under the design restriction that an exit width of the rear edge of the blade is set to a predetermined design value. The ratio of the width of the clearance and the height of the blade is thereby made relatively large. As a result, the ratio of a flow path area occupied by a clearance flow to a flow path area occupied by a main flow is reduced. Since the pressure loss is thus made small, a drop in the efficiency can be prevented.

Abstract: A modular header body is described for distributing fluid to an individually pumped fluid circuit. The modular header body has a valve to selectively isolate the header body's suction chamber from its volute, which permits a pump motor to be disconnected from the header body while the valve is closed. Each modular header body is constructed so that adjacent header bodies can be connected to each other to form a common suction chamber. Each header body's isolation valve operates independently so that the volute of one header body can be isolated from the common suction chamber without affecting fluid supply to the other header bodies.

Abstract: A pump assembly for a chilled beverage dispenser includes an axle oriented in a substantially vertical orientation at a predetermined location along a bottom wall surface of the dispenser bowl; an impeller which rotates about an axis defined by the axle; an inner pump shell that fits over the axle and defines an internal cavity for enclosing the impeller without impeding rotation of the impeller; and an outer pump shell that fits over and engages the lower pump shell, with a cavity being defined and maintained between the inner pump shell and the outer pump shell. As the bladed impeller rotates, beverage is drawn into the pump assembly along the bottom wall surface of the dispenser bowl, and is also discharged along the bottom wall surface of the dispenser bowl, thus providing maximum agitation of the beverage.

Abstract: A cooling fan (100) includes a housing (50) and an impeller (20) rotatably received in the housing. The housing includes a bottom base (52) and a top cover board (59). The impeller includes a plurality of fan blades (25). A bump (58) extends upwardly from the base and surrounds a portion of an outer periphery of the impeller for blocking a portion of an airflow generated by the impeller and rebounded from the housing from entering the fan blades via a bottom of the fan blades.

Abstract: A centrifugal fan includes a fan frame (20) and a fan impeller (10) received in the fan frame. The fan impeller includes a hub (12) and a plurality of fan blades (14) extending radially from an outer periphery of the hub. Each of the fan blades has a leeward lateral surface (144a) and an opposite windward lateral surface (144b) as the fan impeller rotates. At least one of the fan blades has a rib (146) protruding longitudinally and outwardly from the leeward lateral surface of the fan blade. The rib is located adjacent to an outmost free end of the fan blade and adapted for blocking an airflow generated by the fan impeller to flow back towards the fan blades of the fan impeller.

Abstract: A centrifugal fan includes a fan frame (20) and an impeller (40) received in the fan frame. The impeller includes a hub (41) having a circular top wall (410) and a cylindrical side wall (412) extending downwardly from a rim of the circular top wall, a plurality of blades (42) extending radially from the side wall of the hub and a blade ring (44). The blade ring includes an annular top plate (441), a cylindrical sidewall (442) extending downwardly from an outer periphery of the top plate, and a flange (443) extending outwardly from a bottom of the cylindrical sidewall. The blade ring is arranged on top surfaces of the blades received in an air inlet (24a) defined in a top surface of the fan frame, and the top plate of the blade ring and the top surface of the fan frame are coplanar with each other.

Abstract: A plastic compressor housing, in particular a radial flow compressor housing, preferably for a turbocharger, has at least one thermosetting plastic body for providing an intake pipe, a compressor duct, and an outlet pipe, and a thermoplastic at least partially covering the thermosetting plastic body in a hood-like fashion. The thermosetting plastic body is formed as a basic body and the thermoplastic is injection molded on the basic body. At least a first anchoring element is embodied on at least a first surface of the thermosetting plastic body and at least a second surface of the first anchoring element is substantially completely covered with the thermoplastic. The disclosure further relates to a method for producing a plastic compressor housing.

Abstract: A heat dissipation module and an electronic device assembly having the heat dissipation module are provided. The electronic device includes an enclosure, a plurality of heat generating components received in the enclosure, an electronic device received in the enclosure, and a heat dissipation module received in the enclosure. The electronic device has a motor. The heat dissipation module includes a casing defining an airflow passage therethrough, and a rotation member being disposed at the airflow passage and having a plurality of blades. The airflow passage communicates with outside of the enclosure. The motor is capable of driving the rotation member to rotate to thereby expel heat inside of the enclosure to outside of the enclosure via airflow generated by the blades.

Abstract: A housing for a blower, fan or pump or turbine, the housing adapted to be associated with a rotor adapted in use to cooperate with fluid flowing through the housing wherein the housing comprises a shroud for guiding the fluid moving in association with the rotor, the rotor having at least one vane adapted to cooperate with the fluid to drive or to be driven by the fluid, wherein the shroud is configured to promote vortical flow of the fluid through the housing.

Abstract: Main rotor features rotor blades, mounted on the outside of a split bowl-shaped bushing; a centrifugal fan is mounted inside the bushing and fan blades rotate in direction opposite to the rotation of rotor blades. Rotor blades are encased in an external drum attached to its ends, which, in turn, is fastened to a bushing with bolts; a centrifugal fan is constructed as a disc with blades and no casing. Alternatively, rotor blades can be mounted on the outside of a split bowl-shaped bushing while the centrifugal fan is placed inside, and equipped with an external drum.

Abstract: A blower assembly 10? includes a housing 18? having an inlet 19 and an outlet 20. The housing includes an inlet ring 22? at the inlet. A blower wheel 12? is mounted for rotation in the housing. An electric motor 16 includes a shaft 14 having an axis B. The shaft is coupled to the blower wheel so that rotation of the shaft causes rotation of the blower wheel that causes air to flow from the inlet to the outlet. The inlet ring has an annular extension 24 extending linearly in the same direction as the shaft axis B. An end 26 of the blower wheel 12? is within bounds of the extension 24.

Abstract: A centrifugal air blower guides returning air from a fan rotated by a rotational drive source out of interference with air delivered by a fan. The centrifugal air blower includes a rotational drive source having a rotational drive shaft, a housing including a holder which holds the rotational drive source in surrounding relation thereto, and a fan coupled to the rotational drive shaft of the rotational drive source. The housing has a disk-shaped flange extending from the holder, and the flange has a plurality of air guides disposed on a surface thereof and extending toward a peripheral edge of the flange.

Abstract: A modular compressor assembly comprises a common motor assembly, an impeller, a blower housing and an engagement mechanism. The common motor assembly includes a stator housing containing a stator assembly and having a rotor magnet rotatably disposed therewithin. The impeller is mounted to and rotatable with the rotor magnet. The blower housing is selectable from among a plurality of blower housings each having a different cross-sectional geometry. The engagement mechanism is formed on the stator housing and/or the blower housing and allows interchangeable mounting of different blower housing configurations to the common motor assembly in order to achieve varying flow characteristics of the compressor assembly.

Abstract: A unit for treating air with controlled flow, comprising a free rotor (GL), single or double inlet, combined with a directional conveyor (CD), which is designed so as to be able to directionally exploit the high static efficiencies, typical of free rotors (GL), and so as to be able to obtain the maximum optimisation between the power supplied and the static pressure obtained, at the same time maintaining low sound emissions, low dynamic pressure values at the discharge and no perturbation of the flow and of the performances both at the discharge and at the suction.

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: A turbocharger turbine housing with at least two volutes utilizing multiple nozzle rings to optimize the turbocharger's proficiency per application, and a valve to control the exhaust flow to selected volutes in the turbine housing.

Abstract: There is provided a centrifugal impeller that includes a boss portion, a plurality of first centrifugal blades, a plurality of second centrifugal blades, and a coupling portion. The boss portion is capable of rotating. The plurality of first centrifugal blades are provided to the boss portion such that the plurality of first centrifugal blades extend from the boss portion. The plurality of second centrifugal blades are provided around the boss portion such that the plurality of second centrifugal blades are spaced apart from the boss portion. The coupling portion couples the plurality of first centrifugal blades and the plurality of second centrifugal blades.

Abstract: A centrifugal fan includes an impeller having a plurality of blades around a predetermined central axis, a motor that rotatably drives the impeller, a control circuit that controls the rotation of the motor, and a casing that houses the impeller, the motor, and at least a portion of the control circuit. A plurality of electronic components of the control circuit are disposed in an electronic component mounting portion provided between a circumferential wall of the casing and a virtually extending plane of an opening end surface of an exhaust port along a direction substantially perpendicular to the central axis. In the centrifugal fan, the electronic components are disposed radially outside an air passage, and thus the centrifugal fan can be reduced in its axial size, so that downsizing of the fan can be achieved.

Abstract: An electric blower includes an electric motor including a stator and a rotor. The impeller is rotated by the electric motor. An air guide having a plurality of guide blades is disposed around the impeller, and a casing encloses the impeller and the air guide. The casing is provided with a number of exhaust openings through which a part of an air stream suctioned by the impeller is discharged, and a circumferential length of each of the exhaust openings is substantially identical to a circumferential distance between outer peripheral ends of adjacent guide blades. Alternatively, the circumferential length of each of the exhaust openings may be less or greater than the circumferential distance between outer peripheral ends of adjacent guide blades.

Abstract: An improved blower housing and method of manufacture comprising a wrapper wall sheet conjoined with a first side wall and a second side wall and held together with a seam interlocked with mating protrusions and apertures. The housing design may utilize different types and thicknesses of conjoined materials and reuse the components when separated. Unlike prior art blower housing seams, the present art provides a substantially smooth positive locking seam without the use of welds or fasteners.

Abstract: A wind power conversion apparatus driven by a fly wheel includes a wind channel, a fly wheel and a rotating shaft. The wind channel is configurated into a long hollow tapered tubular shape with both ends open. One end, which being larger is cross section, serves as a wind inlet, while to other smaller one serves as a wind outlet so as to conduct the wind flow into the apparatus via the wind channel. A fly wheel with several wind vanes is installed in the wind channel proximate to the wind outlet so as to convert the wind force into an adjustable rotating torque of the fly wheel. The fly wheel is able to keep rotating about the rotating shaft by its inertia for a certain duration of time even after the wind ceases to blow. With this apparatus, the kinetic energy of the wind blow is converted into an adjustable and storable mechanical energy to utilize.

Abstract: The present invention relates to a base design of cooling structure, which includes a base, and a shaft tube disposed on the base to support a spindle of an impeller to rotate therein. The base has at least a groove and the groove is located beyond an outer diameter; the groove design can be employed to effectively prevent the issue of contraction stress caused by difference of cooling time of temperature and to prevent a slanted shaft tube for supporting a stable operation of the spindle of the impeller, thereby avoiding the resulting run-out and noise, making vibration and noise test values of the product comply with a standard value range, reducing the defective rate of the product and prolonging the product lifespan.

Abstract: A centrifugal fan device includes a centrifugal fan having a hub portion having a cylindrical outer peripheral surface and a plurality of blade portions extended in a centrifugal direction from the outer peripheral surface of the hub portion, and a fan casing which rotatably accommodates the centrifugal fan therein and includes a pair of inlets having an equal diameter and disposed opposite to each other with the centrifugal fan interposed therebetween, a convex portion is provided on a positive pressure face of the blade portion for receiving a wind when the blade portion is rotated, and one of ends of the convex portion is disposed on an inside of a projection region of the blade portion surrounded by an outer periphery of the inlet projected onto the blade portion and the other end of the convex portion is disposed on an outside of the projection region and an inside separated from a tip of the blade portion by a first predetermined distance.