Abstract: A gas turbine engine rotor blade containment assembly (38) comprises a generally cylindrical, or frustoconical, metal casing (40). The metal casing (40) has at least one arched portion (62, 64, 66) and each arched portion (62, 64, 66) extends circumferentially around the metal casing (40). Each arched portion (62, 64, 66) comprises a radially inwardly extending arch (68) in which the trough (74) of the arch (68) is radially inwardly of a straight line (76) interconnecting the axial ends (70, 72) of the arch (68). The trough (74) of the arch (68) is radially inwardly of the at least one of the axial ends (70, 72) of the at least one arch (68). The arched portions (62, 64, 66) introduce compressive stresses into the metal casing (40) during a fan blade 34 impact and enable the metal casing (40) to withstand the impact. The fan blade containment assembly (38) is lighter for large diameter turbofan gas turbine engine (10).

Abstract: A mini-fan (126) is implemented for installation in a recess (124) of a wall (122), which wall is equipped on the periphery of the recess (124) with a plurality of retaining members (128, 129). The fan has, for air guidance, a housing (136) that, in its installed position, projects with a housing portion (127) approximately complementary to the recess (124) of the wall (122) into that recess. Arranged on the periphery of that housing portion is at least one part (138) made of an elastomeric material, with which part the fan (126) is introducible, upon its installation with the part (138) made of elastomeric material with displacement along the wall (122), into the retaining members (128, 129), in order to bring that part (138), in the installed position, at least locally into sealing contact against the wall (122).

Abstract: A connecting device of a hot swap fan module comprises at least one terminal and a casing. The at least one terminal is electrically connected to the fan so that, when the fan is mounted in a system, electrical connection is formed between the fan and the system. The connecting device further comprises at least one LED (light emitting diode) which is electrically connected to the fan or the at least one terminal for indicating the operating state of the fan, and at least one cover plate protruded from at least one edge of the casing so as to form the whole casing into an L or U-shaped structure. The casing is closely attached to one side face of the fan housing when the casing is assembled to the fan. The casing also has a recess for receiving those lead wires electrically connecting the terminals, the fan, and the LED.

Abstract: A fan case base, which is for being mounted with a fan wheel having a hub and a plurality of fan blades surrounding the hub, includes a base support, a frame and a plurality of engaging parts. The base support is attached with the fan wheel. The frame is disposed around the periphery of the base support and provides the height thereof less than that of the fan blades. The engaging parts are disposed at the top of the frame for the fan case base being attached to an article and provide the height thereof greater than that of fan blades. The fan case base 2 can provide a best mode of guiding the airflow, enhancing the effect of cushion and shock absorption during the airflow entering the frame 22 and the fan blades 32 of the fan heel 3 not touching the frame 22 even in case of the fan case base 2 being hung vertically.

Abstract: A fan frame provides fixing parts extending downward to embrace a radiator with a hook end catching lower side of the radiator respectively. A guard device is disposed on the frame with hard skeletons to surround a fan wheel so that fluid can enter the radiator via the openings. Hence, the openings of the guard device can increase flow rate of the fluid entering the radiator, decrease noise and prevent foreign objects entering the fan wheel.

Abstract: An axial flow fan includes a frame, a driving device and a fan blade part. The driving device is disposed in the frame and the fan blade part provides a hub member and a plurality of fan blades attached to the outer rim of the hub member and the hub member engaging with the driving device. It is characterized in that the fan blades are disposed outside the frame and the lower edges of the fan blades are flush with or higher than the upper edge of the frame.

Abstract: A retractable drum fan in which two housing sections are telescoped to form a housing, and an impeller is disposed in the housing for forcing air through the housing. The housing sections are movable between a retracted position and an extended position.

Abstract: A structure for cooling an electronic component includes a heat sink attached to the component, an inner air duct extending into a central portion of the heat sink, and an outer air duct extending into an outer portion of the heat sink. In inner fan, within the inner air duct, moves air in one direction, while an outer fan, in the outer air duct, moves air in the other direction. The fans may be built as separate rotors, or as separate portions of a single rotor.

Abstract: A heat dissipating fan includes a casing having an outlet, a base mounted in the outlet of the casing, and a plurality of air guiding members mounted in the outlet and connected between the base and the casing. Each air guiding member defines at least one air concentrating area for concentrating air, for guiding airflow, and for increasing wind pressure when an impeller mounted on the base turns.

Abstract: A case that is used for an electronic or electric device has an opening portion arranged at a vicinity of a fan motor that generates airflow inside and outside the case. The opening portion has a protection portion for preventing a finger or other matters from entering the fan motor. The protection portion includes a first rib group extending linearly in a lateral direction, a second rib group extending linearly in a second direction vertical direction. Each of the ribs has an inclined surface that is along a direction of the airflow exhausted from the fan motor and faces the inside or the outside of the opening portion.

Abstract: The axial fan for a computer comprises a rotatable fan blade unit and a motor unit. The fan blade unit comprises a fan head and a plurality of fan blades arranged radially thereto. The motor unit is held by supports passing through the airflow. The supports have a distance of at least 7.5 mm from the fan blades measured in axial direction. Due to this distance being larger in comparison to known solutions the fan produces less disturbing noise.

Abstract: An axial flow fan motor having an impeller molded integrally with a shaft from a synthetic resin. The shaft is easily assembled with a bearing arrangement by being brought into tight contact with the inner ring of the bearing arrangement and is reliably fixed thereto in the elastic region of the shaft. A through hole is formed in the shaft along its central axis. After the shaft is fit into the inner ring of the bearing arrangement, a metal pin is pressed into the axial through hole. Because the pin is pressed in, the shaft is elastically expanded and brought into tight contact with the inner ring and fixed thereto in the elastic region of the shaft. Furthermore, the distal end portion of the shaft elastically outwardly expands and is pressed against the end surface of the inner ring, thereby preventing the bearing arrangement from coming off the shaft.

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 cooling fan with high heat-dissipating performance includes a plurality of blades; and a frame for receiving the blades therein, wherein the frame has a reduced height for exposing the blades to outside of the frame so as to allow air to enter into the frame via a top portion and a peripheral portion of the blades to improve air introduction and heat dissipating efficiency of the cooling fan. A cover may be mounted to a top surface of the frame, and formed with a plurality of openings for allowing air to enter into the frame through the openings; such an arrangement cam effectively enhance air intake and working efficiency of the cooling fan.

Abstract: A heat-dissipating device and a housing thereof. The heat-dissipating device includes an impeller and a housing. The impeller includes a hub and a plurality of rotor blades disposed around the hub. The housing includes an outer frame, an air-guiding part, and a plurality of stator blades. The air-guiding part is formed on at least one side of the outer frame. The stator blades are disposed in the outer frame corresponding to the air-guiding part. The stator blades guide the airflow through the blades, and greatly increase the static pressure of the airflow discharged from the heat-dissipating device.

Abstract: A fan wherein an airflow adjustment device is used to make fine adjustments to the air discharged by the blower and a method of adjusting a fan's airflow by attaching a flow adjustment device.

Abstract: The present invention concerns a wind power installation comprising a ring generator and a housing having a heat-conducting housing portion in the region of the ring generator. Previously known structures suffer from the disadvantage that mechanical vibrations and oscillations of the generator can be perceived as acoustic disturbance and interference. The object of the present invention is very substantially to eliminate that disadvantage. A wind power installation comprising a ring generator and a pod housing, which surrounds the ring generator, of the wind power installation, wherein the pod housing has a heat-conducting housing portion in the region of the ring generator and a predetermined spacing is provided between the outside periphery of the ring generator and the heat-dissipating housing portion.

Abstract: A heat-dissipating module includes a first fan unit and a second fan unit, which are serially connected together to provide an air inlet and an air outlet. Each of the first fan unit and the second fan unit includes a casing and an impeller. At least one side air inlet is defined in at least one of a plurality of sides of the casing of the first fan unit and a plurality of sides of the casing of the second fan unit. The air inlet amount and the air outlet amount of the second fan unit are increased by the side air inlet. The air density distribution is uniform, and the wind noise during operation is lowered.

Abstract: An air outlet unit (101) for a large blower assembly comprising an outlet tube member (103) with an upstream inner end in flow communication with the pressure side of an impeller of the blower asembly and a downstream outer end for connection with a duct and a mainly cylindrical inner tube member (105) arranged coaxially to the outlet tube member (103) and having an inner end substantially aligned with the inner end of the outlet tube member (103) and a downstream outer end, the inner tube member (105) being closed by a closing means (106). The inner tube member (105) has an open downstream end (8114) projecting in the downstream direction beyoud the downstream outer end of the outlet tube member (103) to thereby achieve a reduced pressure loss and a more uniform velocity profile.

Abstract: Disclosed is a fan module. In one embodiment, the fan module includes a fan having an inlet end and an exit end, and a fan housing in which the fan is positioned, the fan housing including at least one angled interior wall adjacent the exit end of the fan that diffuses air downstream of the fan.

Abstract: Novel twisted blades with an air foil for use with air conditioner condensers and heat pumps that provide improved airflow efficiency to minimize operating power requirements having an overall diameter across the blades being approximately 19 inches, and approximately 27.6 inches. The blades (AC-A) can run at approximately 840 rpm to produce approximately 2200 cfm of air flow using approximately 110 Watts of power from an 8-pole motor. Using an OEM 6-pole ? hp motor produced approximately 2800 cfm with approximately 144 Watts of power while running the blades at approximately 1100 rpm. Power savings were 25% (50 W) over the conventional configuration. A second version of the fan (AC-B) with some refinements to the flow geometry produced a similar air flow while using only 131 W of power at 1100 rpm. Power savings were 32% (62 W) over the conventional configuration. Embodiments can include two, three, four and five blades equally spaced apart from one another about hubs.

Abstract: An assembly includes a fan housing that includes a casing and a stator disposed radially inward of the casing and adapted to receive a rotor assembly. Struts attach the stator to the casing. One or more of the struts may define a channel for routing one or more electrical wires. A fan guard helps prevent accidental contacting of the fan blades. The fan guard may be mounted to the struts and may be flush with the housing, and/or may be adapted to cover at least a portion of the channel, thereby trapping the electrical wire(s) in the channel.

Abstract: A fluid-flow machine (turbomachine) includes at least one rotor equipped with blades and at least one stator equipped with vanes, the rotor being supported in a casing by means of a rotating shaft. A form of annulus is provided whose cross-sectional area in a stage consisting of at least one rotor and one stator results in a rotor-stator contraction ratio QRS which satisfies the equation: [0.2+(KT?0.45)0.1]<QRS<3.0, where KT is the total-stage contraction.

Abstract: An axial-flow fan has a plurality of main fins (702), and auxiliary fins (703) provided between the main fins (702), where the position of a front end of the auxiliary fin (703) relative to X axis and the position of a front end of the main fin (702) adjoining the auxiliary fin in reverse-rotary direction are aligned, the height of the auxiliary fin (703) is approximately three fourths of the height of the main fin (702), and the cross sections of the main fin (702) and the auxiliary fin (703) taken along the axial direction of the main shaft are streamlined.

Abstract: A fan assembly includes a fan mounted within a housing that features an inward concave arrangement for an inner face of its housing to reduce the distance between the housing and a center shaft of the fan blades. In this way, fan vibration and noise can be reduced.

Abstract: At least part of the inner circumferential wall of the outer casing is provided with a concave surface opposing the rotor blade tips as seen in a longitudinal section. Typically, each of the rotor blades is provided with aerofoil section, and the compressor is designed as a transonic axial flow compressor. Thereby, a compressive wave is produced upstream of the shockwave so that the Mach number of the flow entering the shockwave can be reduced. As a result, the shockwave is made less severe, and the shockwave loss can be reduced. In particular, because the concave surface is provided in the casing wall as opposed to the case where the concave surface is provided in the negative pressure side of the rotor blade, the reduction in the performance owing to the change in the angle of the airflow entering the passage defined by the concave surface under a partial load condition can be avoided.

Abstract: A motor-fan shroud is formed at its lower portion with a supporting portion having a hole and at its upper portion with a first and second clip portions arranged apart from each other in a width direction. A reservoir tank is formed at its lower portion with a projection extending downward and insertable into the hole of the supporting portion and at its upper portion with a first and second ear portions insertable from above into the first and second clip portions, respectively. A first clipping surface of the first clip portion has a substantial half-ball shaped projection to be fitted in a hole of the first ear portion, while the second ear portion has a claw to be latched by the second clip portion so that unlatch, in an upward direction, of them can be prevented.

Abstract: A heat dissipation fan includes a fan module and a flow guide device. The fan module further includes a motor stator set and a fan rotor. The motor stator set provides an axial core and an annular join part. The fan rotor is rotationally joined to the axial core. The flow guide device provides a plurality of flow guide blades. An annular section is provided on the flow guide blades and the flow guide blades is integrally made with the annular join part or the flow guide blades is integrally made with a frame and the frame being attached to the motor stator set. The annular section can reduce an eddy flow area, which is formed due to an electronic component impeding the air flow and creating counter air flow under the flow guide blades, so as to increase flow speed and flow rate of the air flow blown by the fan rotor and approaching an electronic component.

Abstract: An improved axial-flow fan structure is disclosed and claimed, which includes a hub and a plurality of blades. The hub has a top surface and a side surface around which the plurality of blades is mounted. A lateral air intake region is formed above the top surface of the hub and surrounded by edge portions of all of the blades. A lateral air intake surface around the lateral air intake region is constituted by the edge portions of all of the blades. A part of each of the edge portions is fastened to the side surface of the hub.

Abstract: A port is employed for a fan chamber which defines a volume formed by at least one generally continuous vertical wall connecting a horizontal base wall with an opposing horizontal exit wall. Within the volume is a fan rotatable in a plane generally parallel to a plane of at least one of the horizontal walls. The port is formed of an inner side located between a center of the exit wall and an outer edge of said the wall, an outer side located between the inner side and the outer edge of the exit wall, and two opposing secant sides connecting respective ends of the outer side to the inner side. A shape of the inner side forms a straight line or a convex line with respect to the center of the exit wall.

Abstract: A hydroelectric turbine anchored in a body of water which produces electricity directly from its housing. The turbine is in and of itself a generator whose housing is its stator and whose blade it its rotor.

Abstract: A tubeaxial fan (10) broadly including a cylinder (12), a propeller (14) rotatably supported in the cylinder (12), and a drive assembly (16) operable to rotate the propeller (14) is disclosed. The propeller (14) includes blades (28,30,32,34,36,38) each having an inventive blade design. The inventive blade design presents a chord length (C), a stagger angle (?e), and a camber height (?c) that vary along each of the blades as shown in TABLE 1. The inventive blade design presents an external surface of each of the blades having a shape defined by the relative positioning of a plurality of coordinates contained in at least nine cross-sections (e.g., the blade (28) includes cross-sections (44,46,48,50,52,54,56,58,60)). The cross-sections (44,46,48,50,52,54,56,58,60) of the illustrated blade (28) have the corresponding plurality of coordinates listed in TABLE 2.

Abstract: A heat-dissipating fan includes a casing having an air outlet, a base mounted in the air outlet, and a plurality of guiding plates in the air outlet. An impeller is mounted on the base that is supported in the air outlet by the guiding plates. The guiding plates are parallel to one another and extend in a direction having an inclining angle with respect to an axial direction of the air outlet. The guiding plates guide airflow and increase wind pressure when the impeller turns.

Abstract: A vehicle fan shroud made integrally with a coolant reservoir comprising a shroud unit molded from a non-transparent material with a flat flange portion and a hub portion for a radiator fan, and coolant reservoir having a shape that matches the configuration of the flange and hub, which is made from a semi-transparent material for observing the level of the coolant in the reservoir. The reservoir is made in the form of an open box and is welded to the flange portion with its open side so that the flange of the shroud closes the open part and forms a wall a wall of the reservoir. A distinguishing feature of the device of the invention is that a coolant supply nipple portion projecting from said top, a coolant supply tube located inside said coolant reservoir, and a drain pipe extended from said bottom portion are coaxial and molded integrally with the rest of the reservoir.

Abstract: A heat-dissipating fan includes a casing having an air outlet, a base mounted in the air outlet, and a plurality of ribs each mounted between the base and the casing. An impeller is mounted on the base and includes a plurality of blades. Each rib includes in sequence at least a first radial guiding portion, a first circumferential guiding portion, and a second radial guiding portion. Each of the first radial guiding portion and the second radial guiding portion extends in a direction having an inclining angle with an axial direction of the air outlet. The first radial guiding portion, the first circumferential guiding portion, and the second radial guiding portion guide airflow passing through the air outlet and increase wind pressure of the airflow when the impeller is turning.

Abstract: A fan device with increased airflow output is provided, which includes: a frame having an air inlet and an air outlet, and formed with an opening penetrating through the frame; and a rotating mechanism received in the opening of the frame and connected to a driving mechanism that drives the rotating mechanism to rotate, the rotating mechanism being composed of a hub and a plurality of blades peripherally mounted to the hub, wherein each of the blades is formed with at least an extending portion, and the extending portions are adapted to expose to the air inlet for increasing contact area between the blades and ambient air. By the above fan device with increased air intake, pressure and quantity of airflow outputted from the fan device can be desirably enhanced, so as to achieve optimal heat dissipation effect for an electronic device mounted with the fan device.

Abstract: An axial-flow turbine has an exhaust diffuser including a hub-side tube and a tip-side tube. In the exhaust diffuser, front struts and rear struts are placed to cross a flow of working fluid. A wake generated behind the front strut diverts from the rear strut and passes through a gap between a pair of the rear struts. Otherwise, a wake generated behind the front strut hits against the front face of the rear strut. The front struts are equal to or multiple of the rear struts in number.

Abstract: A process gas extraction device (10) for an axial compressor, having a high degree of adaptability to changes in the operating characteristics of the compressor; a casing (14) of the axial compressor is provided with a volute (15) for collecting process gas and the extraction device (10) comprises collecting structures (12) connected to this collecting volute (15).

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 for use with a grain structure and the like having end plates in spaced parallel alignment with an inlet port in one plate and an outlet port in the opposite plate, a barrel housing positioned between the end plates and in communication with the ports, and a plurality of reinforcing members secured to, and extending between, the end plates and being in spaced relation to an outside surface of the barrel housing to permit the manual grasping thereof for purposes of moving the fan.

Abstract: A method for fabricating a turbine casing including a plurality of turbine shroud assemblies is provided. The method includes providing a base casing having a forward mounting flange and an aft mounting flange and at least one channel defined therebetween, machining a rim on the base casing proximate the at least one channel, and coupling a ring member to the base casing with an interference fit such that the rim is at least partially received within a groove formed within the ring member.

Abstract: The invention relates to a duct fan having a distributor and an impeller that is drivable by a motor. The distributor has a plurality of vanes which can be connected to the duct to mount the tube fan in a duct.

Abstract: The ventilation unit has an electric motor, the output shaft of which is fitted with a fan having a cup-shaped central body and a number of blades. The central body is defined by a base wall, and by an annular wall from whose outer face the blades extend. And the main characteristic of the present invention lies in through windows being formed in the annular wall of the central body to channel out, in use, any condensate formed inside the central body.

Abstract: An axial flow fan of high efficiency and low noise level is provided. The fan includes a motor, an impeller having a plurality of blades around a hub fitted to the motor, and a fan casing having an air inlet on one side and an air outlet on the other, wherein a radial position with a maximum setting angle in a blade section, and a radial position with a contour of a leading edge portion in a fluid flowing direction forming a projecting apex in the flowing direction are located between 60% and 80% of the outside diameter of the impeller.

Abstract: The axial fan for a computer comprises a rotatable fan blade unit (5) and a motor unit (1). The fan blade unit (5) comprises a fan head (7) and a plurality of fan blades (6) arranged radially thereto. The motor unit (1) is held by supports (4) passing through the airflow. The supports (4) have a distance (d) of at least 7.5 mm from the fan blades (6) measured in axial direction. Due to this distance being larger in comparison to known solutions the fan produces less disturbing noise.

Abstract: A fan for use with a grain structure and the like having end plates in spaced parallel alignment with an inlet port in one plate and an outlet port in the opposite plate, a barrel housing positioned between the end plates and in communication with the ports, and a plurality of reinforcing members secured to, and extending between, the end plates and being in spaced relation to an outside surface of the barrel housing to permit the manual grasping thereof for purposes of moving the fan.

Abstract: A fan assembly includes a fan mounted within a housing that features an inward concave arrangement for an inner face of its housing to reduce the distance between the housing and a center shaft of the fan blades. In this way, fan vibration and noise can be reduced.

Abstract: An improved axial-flow fan structure is disclosed and claimed, which includes a hub and a plurality of blades. The hub has a top surface and a side surface around which the plurality of blades is mounted. A lateral air intake region is formed above the top surface of the hub and surrounded by edge portions of all of the blades. A lateral air intake surface around the lateral air intake region is constituted by the edge portions of all of the blades. A part of each of the edge portions is fastened to the side surface of the hub.

Abstract: An axial flow fan assembly is provided to prevent the backflow of fluid passing therethrough. The axial flow fan assembly includes a mounting panel having a through-hole to allow fluid flow, and an axial flow fan having a plurality of fan blades rotatably installed in the through-hole of the mounting panel to generate a suction force. A fan shroud connects outer ends of the plurality of fan blades to each other to guide the fluid flowing by the suction force, and includes a flange outwardly extended from the fan shroud to diminish the backflow of the fluid through a gap between the fan shroud and the through-hole of the mounting panel.

Abstract: Impeller and stator for use in a fluid machine and consisting, for reducing flow noise and for improving the stability of the characteristic curve between the flow input and output cross-sections, of a solid material matrix with a plurality of flow channels for deflecting the flow and increasing the pressure.