Abstract: A heat exchanger, an axial-flow fan, a bell mouth, a fan motor, and a baffle plate are disposed in a casing of an outdoor unit. The casing includes a front panel provided with an air outlet, and a rear panel provided with an air inlet. The bell mouth and the baffle plate are disposed on an inner surface of the front panel. The bell mouth has a first opening opened toward the heat exchanger, and a second opening opened toward the air outlet. The baffle plate is disposed to incline from a predetermined position on the inner surface of the front panel toward where the bell mouth is disposed.

Abstract: A power turbine includes a second stage vane having an airfoil with a cold un-coated nominal profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.

Abstract: A fan system may generate an air flow during use. In various implementations, a fan system may include a fan and an orifice. The orifice may include a converging section, a diverging section, and a minimum radius section disposed between the converging section and the diverging section.

Abstract: A sound-proofed helicocentrifugal fan includes a helicocentrifugal propeller associated with a motor, housed in a casing formed by a central piece and respective end pieces, which pieces are perforated with holes distributed over the entire surface except for the area around the propeller. A sound-absorbing blanket surrounds the casing, and an outer casing is disposed around the entire assembly.

Abstract: A fan includes a frame, rotor supported by this frame and having a central hub and a number of blades and a drive mechanism for rotatably driving the rotor, in addition to a ring to which the end zones of the blades are connected. The ring is assembled from two part-rings of the same form which each include a circular strip of sheet material, the free ends of which are mutually connected to form the outer surface of a truncated cone, and a third part-ring which mutually connects the inner edges of the first two part-rings. The end zones of the blades are connected to the third part-ring. The ring has a diameter of more than about 1.50 m. The number of blades amounts to at least eight. The blades are hollow and include a framework structure which is provided with a skin connected thereto.

Abstract: An axial fan is provided. The axial fan includes a hub, an impeller having a plurality of blades mounted on an outer peripheral surface of the hub, and a housing surrounding the impeller. Each of the blades has a front edge angle (?) within a range of ?8° to ?20°, a mounting angle (?) within a range of 36° to 50°, and a twisted angle (?) within a range of 10°±2°.

Abstract: An inventive wind turbine configuration including a means for increasing wind speed through the body of the turbine and means for directing the fluid air into a discrete portion of the turbine generator is provided. Such a device allows for the capture of wind from any environment, low speed or otherwise, in order to subsequently efficiently increase the overall wind speed thereof for further introduction within the turbine portion. The overall device thus includes a properly configured air intake component portion with a conical component to direct the captured wind directly to a portion of the turbine as well as suitable means to reduce back pressures of the introduced fluid stream.

Abstract: A floor standing pedestal fan for creating an air current includes a base housing an impeller and a motor for rotating the impeller to create an air flow, an air outlet, and a telescopic duct for conveying the air flow to the air outlet.

Abstract: An air duct mounted to a fan having an end board includes a top board which defines an opening, through which the fan is extended. Two opposite blocking members extend up from the top board at opposite first sides of the opening. Two opposite limiting members extend up from the top board at opposite second sides of the opening. Each blocking member includes a tab to block a top of the end board of the fan. Each limiting member includes a projection to abut a bottom of the end board of the fan.

Abstract: A cooling system is provided for use in a machine. The cooling system includes a fan having a hub and a plurality of evenly spaced blades connected with the hub, and a shroud partially surrounding the fan. The shroud includes a flat surface having an opening of a predetermined diameter is centrally disposed on the flat surface. Further, the shroud includes a circular sidewall having of a predetermined width extending in a substantially perpendicular direction from the flat surface and encompasses the opening.

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 fan configured for integration with a structure having at least two support members is disclosed. The fan comprises a fan guard, a fan blade surrounded by the fan guard, and first and second mounting brackets. Each of the first and second mounting brackets is configured for connection to a respective one of the support members. The fan also comprises first and second connectors oppositely disposed on the fan guard and configured for connection to a respective one of first and second mounting brackets. The first and second connectors are adjustable with respect to the first and second mounting brackets, and the fan is configured to rotate between at least two struts. Rotation of the fan between the at least two struts is limited such that an opening defined by one of the struts and said fan guard does not exceed a predetermined size.

Abstract: The present invention is applicable to the technical field of heat-radiation structures and discloses a flow-guiding apparatus and an electronic device including the flow-guiding apparatus. The flow-guiding apparatus includes a support and flow-guiding members for guiding an air flow generated by an axial fan to a directed area, where the flow-guiding members are connected to the support, at least two flow-guiding members are arranged and are located on both sides of a hub of the axial fan or around the hub of the axial fan, and the flow-guiding members tilt toward the hub of the axial fan along an air-blowing direction of the axial fan. The electronic device includes a chassis, where the chassis is provided with an air vent, an axial fan is arranged at the air vent, and an air outlet of the axial fan is arranged with a flow-guiding apparatus mentioned above.

Abstract: A cooling apparatus comprising an impeller, a housing that encloses the impeller, an inlet opening formed between the hosing and impeller and a projection formed on the housing that extends from the housing towards the impeller.

Abstract: A fixing apparatus includes two receiving boxes, and a plurality of elastic members. The receiving boxes are covered to each other, to receive a fan. The plurality of elastic members is correspondingly fixed to the receiving boxes, to support the fan and separate the fan from the receiving boxes. When the fan operates, the plurality of elastic members absorbs vibration produced by the fan, and protects the fan from vibrating against the receiving boxes.

Abstract: An airflow assembly includes a fan, a shroud, a plurality of ribs, and a fan support. The fan has a number of fan blades. The shroud includes (i) a plenum defining a plenum opening located adjacent to the number of fan blades, and (ii) a barrel extending from the plenum so as to surround the plenum opening. The plenum further defines at least one airflow opening spaced apart from the plenum opening. Each of the plurality of ribs extends inwardly from the barrel. The fan support is attached to the plurality of ribs and is configured to support the fan. The at least one airflow opening is not an attachment structure or a guiding structure, is not configured to receive a fastening member, and does not function as a water drain.

Abstract: The present invention relates to an apparatus and a method for calculating a fatigue usage factor with respect to fatigue generated in the material of a mechanical device depending upon changes of an operation environment during operation of the mechanical device. A fatigue usage factor UOP.cyc,transient n, which is based on the operation-transient state n, is calculated by multiplying a fatigue usage factor based on a design-transient state UDSGN.cyc,transient n by the value of a characteristic fatigue usage factor F (k) as shown in the following equation: UOP.cyc,transient n=F(k)×UDSGN.

Abstract: The invention concerns an engine-mounted fan shroud for use in a vehicle that has a shroud body supported by a vehicle engine, including an outer ring made of a first material having a first stiffness, and a bodyside seal extending from and being integral with the outer ring, with the bodyside seal being made of a second material having a second stiffness that is less than the first stiffness. The bodyside seal fits into and seals around a seal opening in a body-mounted shroud that is mounted to radiator support structure.

Abstract: An axial fan comprising an essentially circular-cylindrical blower pipe configured about a centre axis and comprising one or more plates that are bent and subsequently joined at opposing plate rims for forming the circular-cylindrical blower pipe; and wherein the circular-cylindrical blower pipe has two opposing ends; wherein the blower pipe is, at both its ends, bent outwards essentially at right angles to the outside of the blower pipe for forming a mounting flange. The blower pipe comprises a rust-resistant metal plate or a steel plate which is coated with a rust-resistant material at least on the outside and the inside of the blower pipe; and in that the plate rims are joined in a rim-by-rim manner, without overlap, by soldering or welding with a rust-resistant filler material.

Abstract: Fan system, in particular for a heat exchanger, which fan system has at least one receptacle for a fan drive unit, at least one housing wall, and at least one strut, in particular a number of struts which connect the receptacle to the housing wall, wherein the struts are arranged between at least one heat exchanger and at least one fan wheel, wherein at least one strut has a strut end section which is configured as a flow guiding face and has an angle ? with respect to a fan-wheel axis direction.

Abstract: A case for a gas turbine engine includes a single-piece case that includes a combustor case portion and a turbine case portion that is integrally formed with the combustor case portion as one piece. In one example, the single-piece case includes a transition duct/mid-turbine frame case portion is integrally formed with the combustor and turbine case portions.

Abstract: A fluid machine, a wind turbine, and a method for increasing velocity of an internal flow is provided. A basic shape of the casing has a cycloid curve having a convex portion at a throat section between the front and rear edges. The throat section and a vortex generating face disposed downstream of the throat section to generate the negative pressure region are formed on an inner circumferential face of the casing. A first outflow gradient is formed on an outer circumferential face of the casing and at the rear edge. A second outflow gradient is formed on a boundary of a throat-side adjacent face adjacent to the vortex generating portion to separate the internal flow. The negative pressure region of high vorticity is generated behind the vortex generating face by virtue of the non-streamline shaped casing to increase the velocity of the internal flow.

Abstract: A fan assembly for creating an air current is described. The fan assembly includes a nozzle mounted on a base housing a device for creating an air flow through the nozzle. The nozzle includes an interior passage for receiving the air flow from the base, a mouth through which the air flow is emitted, the mouth being defined by facing surfaces of the nozzle, and spacers for spacing apart the facing surfaces of the nozzle. The nozzle extends substantially orthogonally about an axis to define an opening through which air from outside the fan assembly is drawn by the air flow emitted from the mouth. The fan provides an arrangement producing an air current and a flow of cooling air created without requiring a bladed fan. The spacers can provide for a reliable, reproducible nozzle of the fan assembly and performance of the fan assembly.

Abstract: An apparatus to support a rotor of a turbine engine disposed upon a support surface is disclosed. The apparatus includes a housing, a rotor support bearing disposed within the housing, and a support leg in operable communication with the housing and in direct structural connection with the support surface.

Abstract: A heat-dissipating fan housing includes a casing having a compartment with an impeller section, a stationary blade section, and an airflow concentration section arranged from an air inlet toward an air outlet spaced from the air inlet in an axial direction. A mounting portion is received in the compartment, and an impeller is rotatably coupled to the mounting portion for driving airflows. Stationary blades are interconnected between the casing and the mounting portion and are received in the stationary blade section. Each stationary blade includes a first edge facing the air inlet and a second edge facing the air outlet. The airflow concentration section is between the second edge of each stationary blade and the air outlet in the axial direction. The airflow concentration section concentrates the airflows after passing through the stationary blades. The noise is reduced, the wind pressure is increased, and less electricity is consumed.

Abstract: A fan shroud for a cooling fan assembly with a fan that is rotatable about an axis of rotation defines a downstream direction along the axis of rotation. The shroud includes a barrel for containing the fan. The barrel is concentric with the axis of rotation and further includes a base portion. A plenum includes a plenum body extending radially from the base portion. The plenum body defines at least one edge of length L1. A skirt extends proximate the at least one edge of length L1 and substantially parallel to the axis of rotation. An interface joins the at least one edge of length L1 and the skirt and has a length L1. The interface comprises an underside having a transition surface of a length less than length L1.

Abstract: First and second axial fans are coaxially connected to each other. Each axial fan includes an impeller rotatable about a center axis; a motor rotating the impeller about the center axis, a housing member surrounding the impeller and having a hollow body and approximately square flanges at axial ends of the body, and a group of wires electrically connected to the motor. The axial fans are joined together with their flanges coincident with each other as seen along the center axis. The housing member is provided with first and second receiving portions at least one flange on a center-axis side of an outer periphery of the flange. The groups of wires of the axial fans are pulled out therefrom and extend axially toward a side of the first axial fan opposite to the second axial fan, with passing through the first and second receiving portions, respectively.

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: In an axial flow fan, a line extending from a center axis and passing a corner where a following edge and a radially outer edge of a blade of an impeller meet is arranged forwardly in a rotational direction from an another corner where a leading edge of the blade and a radially outer surface of a hub meet. Furthermore, a camber ratio of the blade, which is minimum at a joint with the hub across the blade, monotonically increases to be maximum at the radially outer edge of the blade.

Abstract: The present invention provides an axial flow fan capable of increasing an air volume and a static pressure more than conventional axial flow fans, and also capable of reducing generation of noise. A guide wall portion 33 is provided to form a guide groove 31 between the guide wall portion 33 and one stationary blade 11. The one stationary blade 11 is disposed in the vicinity of a lead wire engaging portion 25 provided at a housing 3. The guide groove 31 receives a plurality of lead wires 10 and guides the lead wires 10 to the lead wire engaging portion 25. When the guide wall portion 33 is provided and the lead wires 10 are received in the guide groove 31, presence of the lead wires 10 may have less adverse effect on the air volume and the static pressure, and may generate less noise.

Abstract: A diaphragm assembly of a centrifugal compressor includes a return channel wall having a generally ring-like shape; a vane assembly having a plurality of vanes formed integrally with at least one ring-shaped track having a rail structure extending therefrom; and a diaphragm wall having a generally ring-like shape and at least one groove extending around a circumference thereof. The vane assembly is fixedly coupled to the return channel, thereby forming a return channel assembly. The return channel assembly is coupled to the diaphragm wall by sliding the rail structure into the at least one groove of the diaphragm wall.

Abstract: A centrifugal fan includes a space in which the dimension between a shroud-facing wall and a shroud, from the outer peripheral side to the inner peripheral side of the shroud, is substantially uniform, wherein the shroud-facing wall includes a recess extending in the circumferential direction, the recess being disposed at the inner peripheral side of the outer peripheral end of the shroud-facing wall forming the space having the uniform dimension so that the recess forms a space larger than the other part.

Abstract: A ducted fan includes a fan that generates an airflow that flows substantially parallel with the axis of the rotating shaft of the fan; a duct, arranged around the fan, that extends in the direction of the rotating shaft of the fan and includes an airflow inlet defined by the upstream end and an airflow outlet defined by the downstream end, and that has a ramp portion formed in the inner face of the airflow inlet; an airflow guide portion, provided at the airflow outlet, that introduces air from outside of the duct to a position downstream of the airflow outlet; and a negative-pressure forming portion, provided at the downstream end of the airflow guide portion. The negative-pressure forming portion generates a negative pressure near the downstream end of the airflow guide portion when air passes by the negative-pressure forming portion.

Abstract: There is provided a propeller fan in which a clearance between a rotary vane wheel and a shroud is constant three-dimensionally to improve air blowing efficiency and suppress noise. Furthermore, there is provided a propeller fan in which a span length of the rotary vane wheel with respect to the shroud is varied between a front edge portion and a rear edge portion to improve air blowing efficiency and suppress noise. Still further, there is provided a propeller fan characterized in that chamfering is applied only to a negative pressure face of a circumferential outer edge portion of a vane.

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 fan and shroud assembly has a rotatable hub and plural blades extending outward from the hub. A shroud surrounding the fan controls air blast resulting from rotation of the fan. The shroud includes a guide ring spaced a predetermined distance from the periphery of the fan. The ends of the blades are connected together. The guide ring includes continuous circular undulations having alternate differing radii of curvature to reduce air swirl along the periphery of the fan. The undulations surround the fan periphery.

Abstract: In an axial flow fan, for reducing fluid noise and further reducing the noise by suppressing solid-conveyed noise (structure-borne noise) generated by the vibration of an electric motor or the like, the axial flow fan is equipped with a propeller, a motor for driving the propeller, and a venturi portion disposed on the outer circumference side of the propeller and provided on its inner circumferential side with a bellmouth through which an air flow generated by the revolution of the propeller passes, wherein the bellmouth has an intake portion whose diameter contracts in a curved shape in the direction of the air flow, a cylindrical portion having a cylindrical shape, and a discharge portion whose diameter slantingly expands in the direction of the air flow.

Abstract: Fan system, in particular for a heat exchanger, which fan system has at least one receptacle for a fan drive unit, at least one housing wall, and at least one strut, in particular a number of struts which connect the receptacle to the housing wall, wherein the struts are arranged between at least one heat exchanger and at least one fan wheel, wherein at least one strut has a strut end section which is configured as a flow guiding face and has an angle ? with respect to a fan-wheel axis direction.

Abstract: A computer comprising a chassis supporting an electronic component. A fan housing with an axial duct is mounted to the chassis. A blade assembly is rotatably disposed within the duct and comprises a plurality of fan blades that extend radially from a hub to a fan diameter. The axial duct has a chord length at least equal to the fan diameter.

Abstract: A heat dissipation apparatus. A fan frame includes an air inlet, an air outlet, a passage, and a curved expansion portion. The air inlet is opposite the air outlet. The passage is between the air inlet and the air outlet, guiding airflow from the air inlet to the air outlet. The curved expansion portion is radially and outwardly extended from an inner peripheral wall of the passage at the air inlet or air outlet. An impeller is disposed in the fan frame and includes a plurality of blades. Each blade is disposed in the passage and includes an extension end extending to the curved expansion portion.

Abstract: An electric blower includes a motor having a stator on which field windings are wound, a rotor facing the stator, and a bracket covering the stator and the rotor. The electric blower further includes a fan mounted to a shaft coupled to the rotor, and an air guide having a diffuser provided to the outer circumference of the fan and formed of a plurality of stationary blades adjacent to each other. The electric blower still includes a fan case having openings at its outer circumference for discharging a part of the air having passed the diffuser to the outside, and protrusions having a brim for covering a part of the openings. The foregoing structure allows the air blower to cool the motor with airflow generated by the fan.

Abstract: A heat dissipating fan includes a cover plate having an air inlet and a base, an impeller mounted to the base and having a plurality of blades, and an air guiding member having an air passageway and an air outlet. A portion of an axial height of the respective blade is received in the air passageway of the air guiding member. Side inlets are defined between the cover plate and the air guiding member. Air intake occurs simultaneously in the air inlet and in the side inlets when the impeller turns, driving airflow to exit the air outlet in a predetermined direction.

Abstract: A fan holder assembly includes a fan duct, a fan, and a holder that secures the fan to the fan duct. The holder is a frame and defines an air hole in the center thereof. Four through holes are defined in the edge of the holder for securing the holder to the fan duct, and a hook is formed from the edge of the air hole for securing the fan to the fan holder. Via this assembly, the fan duct is capable of selectively engaging with different sizes of fans to satisfy the need of cooling.

Abstract: A vehicle cooling fan shroud includes a barrel portion which surrounds a cooling fan and is integrated with a substantially rectilinear shroud portion which surrounds a radiator. The barrel portion includes a first portion and a second portion pivotally attached to the first portion. By pivoting the second portion relative the first cylindrical portion and into the rectilinear shroud portion, the shape of the fan shroud is changed to assist insertion of the fan shroud into an engine compartment.

Abstract: An efficient axial fan has a housing enclosure with a square inlet opening and a round outlet opening, a fan assembly with a drive motor and a propeller secured to a shaft and coupled thereto. The entrance of the fan housing is provided with a shutter assembly which is disposed horizontally or vertically across the square inlet opening and comprises a plurality of vanes including a central vane operated by a centrifugal shutter mechanism secured to one end of the propeller shaft, opposite to the propeller and adjacent to the central vane of the shutter assembly. The centrifugal shutter mechanism is normally provided with a hermetic housing comprising a pair of radial masses operatively connected via a pair of pivoting arms to an axial sliding reciprocating actuator which is disposed adjacent to the shutter central vane.

Abstract: A fan shroud having an integrated aspirator is provided comprising a first section and a second section. The first section and second section are designed to mateably engage one another so as to form an air passage between a fan and a cooling module of a vehicle. The first section of the shroud includes an air duct formed by a channel in the shroud and a similar channel in a duct cover, so that when the duct cover is mated to the first section of the shroud an air duct is created. A first end of the air duct terminates at an aperture disposed in an end of shroud situated proximal to the fan. A second end of the air duct curves upwardly to a nozzle provided on the top side of the duct cover. A pre-cleaner unit having an air intake and an air exhaust is aspirated through an aspirator port. When the pre-cleaner is mounted to the shroud, the aspirator port is disposed in the nozzle of the duct cover. The aspirator port is thus in communication with the air duct and the shroud aperture.

Abstract: A fan shroud is provided having upper and lower sections. The sections are designed to mateably engage one another at mating flanges so as to form an air passage between a fan and a cooling module of the vehicle. The upper section of shroud includes an aspirator portal in an upper surface thereof. An aspirator is provided having an air intake and an air outlet. The aspirator is supported in the lower section of the shroud proximal to the fan with the air outlet facing the fan. An engine intake air pre-cleaner unit having an air intake, an aspirator port, and an air exhaust is mounted to the shroud by aligning mounting tabs on the pre-cleaner with mounting bosses on the shroud so that the aspirator port is disposed in proximity to the aspirator portal in the upper section of shroud. One end of an aspirator hose is connected to the aspirator port of the pre-cleaner and passes through the aspirator portal. The other end of the aspirator hose is connected to the air intake of the aspirator.

Abstract: A fan and shroud assembly includes a fan having a hub rotating around one shaft and a plurality of blades extending outwardly from the hub, a shroud encompassing the fan to adjust airflow by rotation of the fan, a guide ring portion located at a position where a predetermined gap exists between the shroud and a circumference connecting end tips of the blades so that the fan is supported by the shroud and rotates, and a plurality of swirl prevention units integrally formed with the guide ring portion to prevent a vortex from proceeding along the circumference in the predetermined gap, each swirl prevention unit having a shape in which the length of a circular arc passing through each of the swirl prevention units with respect to the center of the shroud decreases as the arc is closer to the center of the shroud.

Abstract: A fan guard for guiding airflow to dissipate heat generated from a heat-generating device has an airflow inlet disposed on an upper portion of the fan guard for introducing the airflow into an interior of the fan guard, an airflow outlet disposed on a lower portion of the fan guard for enabling the airflow to flow out of the fan guard and to the heat-generating device, and a plurality of ribs disposed in the airflow outlet of the fan guard for separating the airflow outlet into a plurality of isolated flow paths. In addition, the inner diameter of the airflow outlet is smaller than that of the airflow inlet, and there is a space formed between the ribs of the fan guard and the heat-generating device for enhancing the heat-dissipating efficiency.

Abstract: A fan guard has a function of supercharging a fan in addition to supporting a rotor device is disclosed. The fan guard is to be mounted beside the rotor device for supporting the rotor device, and additionally, the fan guard interacts with an airflow generated by the revolution of the rotor blades to supercharge the fan. The fan guard essentially includes a main frame, and a set of guard blades radially arranged inside the main frame and fixed onto an inner surface of the main frame by each one end thereof. Each of the guard blades is preferred to have a shape similar to the shape of the rotor blades, and the set of guard blades can be arranged either upstream or downstream of the rotor blades.