Abstract: A blower device for a vehicle includes at least two blowers having fan shafts arranged in parallel with each other, a single motor for driving and rotating the blowers, and a shroud for holding the two blowers. The motor includes a motor portion and a motor shaft driven by and extending from the motor portion. The shroud has shroud ring portions each of which has a circular shape to cover an outer peripheral portion of the blower, and a shroud plate portion extending from the shroud ring portions to an outside. Furthermore, the fan shafts of the blowers are coupled to the motor shaft via a gear portion, and the motor portion is attached to the shroud plate portion to be offset from a center connection line connecting the centers of the shroud ring portions.

Abstract: A heat dissipation module includes a housing, and a fan including an outer frame, a first rotor, a base, a second rotor and a driving device. The first rotor includes a shaft, a first hub and a plurality of first rotor blades disposed around the first hub. The base is disposed in the outer frame. The second rotor includes a plurality of second rotor blades, and is coupled to the shaft of the first rotor and disposed next to the first rotor. The driving device is supported by the base for driving the first rotor and the second rotor simultaneously.

Abstract: A motor-driven fan assembly includes a bracket which couples to a motor assembly and includes an outlet port. A shroud assembly defines a first chamber and a second chamber and includes an inlet port, the shroud assembly is received on the bracket. A bearing-supported shaft is driven by the motor assembly, and extends through the bracket and into the shroud assembly. A first fan is coupled to the shaft and positioned in the first chamber. A second fan is coupled to the shaft and positioned in the second chamber. The first and second fan include a plurality of curved blades positioned between a flat disc and a cap, the cap defining a non-linear cross section. Rotation of the fans by the shaft results in air flow through the fan assembly. Dust is generally prevented from settling on the fan blades during operation, thereby preventing non-uniform dust buildup or breakup which may cause excessive vibration and reduce bearing and brush life.

Abstract: A centrifugal fan includes a spiral-shaped housing with a driving mechanism and multiple internally mounted centrifugal impellers. The driving mechanism is mounted on a circular base. At least two support brackets links the circular base to the spiral-shaped housing, wherein profiles of the support brackets are involute curves based upon the circular base. The multiple centrifugal impellers, driven by the driving mechanism, suck airflow into the spiral-shaped housing through void spaces among the support brackets. The centrifugal impellers are perpendicular to the support bracket profiles.

Abstract: A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device adapted to apply, to the rotary shaft, a balance thrust force opposing an impeller thrust force. A water-lubricated bearing is used as each of the radial bearings, and the rotary shaft is supported by the water-lubricated bearings with a balance member of the balance device interposed therebetween.

Abstract: This specification discloses a serial fan comprising a plurality of rotor vanes, one or more supports and a frame. Each of the rotor vanes comprises an inlet, an outlet, and one or more blades. Each support supports at least one of the rotor vanes so that the corresponding rotor vane can rotate thereon. The frame connects all the supports. The rotor vanes are connected in series in the axial direction, and the design of each of the rotor vanes is such that the velocity vector of the air relative to one of the blades on the outlet side of the ith rotor vane plus the velocity vector of the blade of the (i+1)th rotor vane relative to that of the ith rotor vane gives the incoming velocity vector of the air relative to the (i+1)th rotor vane. This vector is essentially parallel to the extension direction of the blade on the inlet side of the (i+1)th rotor vane. Here, i is a natural number smaller than the number of the plurality of rotor vanes.

Abstract: Apparatus for use with a slurry pump, including a stationary part which includes a processing chamber having an inner side wall and a central axis, an inlet and an outlet to and from the processing chamber and a rotatable part at least partially disposed within the processing chamber and including an outer wall which is spaced from the inner wall of the processing chamber.

Abstract: In a centrifugal blower unit for an inside and outside air double-layer flow type vehicular air conditioner, a centrifugal fan includes a first fan and a second fan. The first fan and the second fan have plural first blades and second blades arranged about a rotation axis, respectively. A separation wall is provided between the first blades and the second blades. The separation wall restricts mixture of air blown by the first fan and air blown by the second fan. Also, it restricts the air blown by the first fan striking against an end of a divider, thereby suppressing noise due to turbulent air flow.

Abstract: The present invention provides a miniature gas turbine engine for power generation. The engine has a highly integrated unitary rotor shaft where turbine, compressor and shaft are made in one piece in one fabrication process. The turbine and compressor are positioned back to back on the shaft in an overhung configuration, allowing the front bearings to be located in the cold zone of the engine. Preferably, the Mold SDM fabrication technique is utilized to make the unitary rotor shaft in one monolithic part out of ceramics such as silicon nitride, eliminating the need for post process assembly while strengthening the integrity, reliability, and performance of the unitary rotor shaft. Integrated with a permanent magnet in the unitary rotor shaft, the miniature gas turbine engine can generate electric power of 1 kW or less. Additionally, the axial length of the miniature gas turbine engine is about 100 mm or less.

Abstract: In previously known steam turbines (1) a rotor is either only cooled passively or is cooled actively only to a limited extent in a region where the working medium flows in. As the loading on the rotor increases as a result of high steam parameters of the working medium, sufficient cooling of the steam turbine rotor is no longer ensured. The proposed steam turbine rotor (21, 30, 75) extends along an axial extent (25, 34) and includes: an outer side (26a) which adjoins an outer space (27a, 35) which is intended to receive a main flow (27, 36) of a fluid working medium (8), a first A location (30a) along the outer side (26a), at which a first blade (41a) is held, a second location (30b) along the outer side (26a, 33), at which a second blade (41b) is held, the second location (30b) being arranged behind the first location (30a) along the axial extent (25, 34).

Abstract: The invention relates to a high-pressure fan which comprises an electric motor (1) provided with a shaft (2) that goes through it; blade wheels (3, 4) which are mainly made of a carbon fibre-based composite material, arranged on both sides of the electric motor (1) and mounted directly on the shaft (2) of the electric motor; fan housings (5, 6) surrounding the blade wheels (3, 4); and an intermediate channel (7) which connects a pressure opening (9) of one fan housing (5) to a suction opening (11) of the other fan housing (6), the intermediate channel (7) being integrated into the base structure (8) of the high-pressure fan.

Abstract: A steam turbine 1 constructed in accordance with the present invention comprises a high-pressure module 2 and a low-pressure module 3, a speed-reducing gearbox 4, and an alternator, and wherein the high-pressure module 2 has a single stage of blades 20. This single stage of blades 20 performs the same function as a multi-stage high-pressure module, but with a blade design that is different from the blade design of multi-stage steam turbines. For example, the pressure ratio between the inlet and the outlet of the high-pressure module 2 may be in the range 3 to 20.

Abstract: The invention relates to a steam line closing valve (14) for closing a steam line (20), especially in a steam turbine plant (10) between a first partial turbine (11) and at least one second partial turbine (15) that is operated at a lower pressure than the first partial turbine (11). According to the invention, the steam line closing valve (14) is subdivided into a plurality of elements (25a, 25b, 25c, 25d) that cooperate to cover the cross-section of the steam line (20), thereby reducing the moment of inertia Iy of the elements (25a, 25b, 25c, 25d).

Abstract: A method and apparatus for improving the performance of a pump uses a pump performance disk kit comprising an impeller disk having a plurality of impeller disk blades extending at angles from a planar surface of the impeller disk such that when the impeller disk is attached on top of an impeller of a pump the total number of blades for use by the pump, and thus the performance, is increased. Interior edges of the impeller disk blades are located such as to prevent rotation of the impeller disk and lock the impeller disk blades in a location approximately halfway between blades of the impeller of the pump. An anticavitation disk is also attached on top of the impeller disk to eliminate the cavitation caused by coolant spilling out the open face of the pump impeller by blocking off the open spaces between the blades.

Abstract: A serial fan includes a frame, a plurality of rotor vanes, a support connected to the frame through a plurality of connecting parts. The plurality of rotor vanes are arranged in series in the frame along an axial direction and the plurality of connecting parts are disposed therebetween to minimize space occupied by the serial fan in the axial direction, and effectively increase the blast pressure.

Abstract: This specification discloses a serial fan comprising a plurality of rotor vanes, one or more supports and a frame. Each of the rotor vanes comprises an inlet, an outlet, and one or more blades. Each support supports at least one of the rotor vanes so that the corresponding rotor vane can rotate thereon. The frame connects all the supports. The rotor vanes are connected in series in the axial direction, and the design of each of the rotor vanes is such that the velocity vector of the air relative to one of the blades on the outlet side of the ith rotor vane plus the velocity vector of the blade of the (i+1)th rotor vane relative to that of the ith rotor vane gives the incoming velocity vector of the air relative to the (i+1)th rotor vane. This vector is essentially parallel to the extension direction of the blade on the inlet side of the (i+1)th rotor vane. Here, i is a natural number smaller than the number of the plurality of rotor vanes.

Abstract: In a fluidal machine with an impeller rotating to urge a fluid radially outwardly by a centrifugal force, a vane guiding the fluid discharged from the impeller, a vane member which includes a front end of the vane facing to the impeller so that the fluid discharged from the impeller strikes against the front end and which is prevented from contacting the atmosphere, and a casing surrounding the vane member and contacting the atmosphere, the vane member is discrete from the casing, a vibration propagation between the vane member and the casing is prevented or restrained, and a vibration of a pipe extending from the casing is absorbed.

Abstract: A turbine rotor has a spiral involute channel formed in a rotor disk. In one embodiment, the channel has an inlet near the center of the disk and an outlet near the periphery of the disk. Working fluid of the turbine enters the channel at the inlet and is directed along the channel where kinetic energy of the working fluid is transferred to the rotor by way of blades positioned within the channel. A series of rotors may be stacked together to form multiple, parallel flow paths through a turbine.

Abstract: An air barrier system is disclosed that allows the isolation of a central volume or one volume from another without the use of physical barriers. Toroidal vortices are formed at opposing end or ends of the volume to be isolated and prevent transport inward and outward. Contemplated applications include air curtains, oxygen tents, cleanrooms and testing chamber apparatus.

Abstract: A centrifugal supercharger includes a case presenting a compressor chamber and a transmission chamber. An impeller in the compressor chamber is mounted to a shaft that extends into the transmission chamber. The impeller shaft is drivingly connected to a power input shaft by intermeshing gears provided on the shafts. A portion of the transmission chamber defines a fluid reservoir in which lubrication fluid is held. The intermeshing gears, as well as the bearing assemblies supporting the shafts, are located outside the fluid reservoir portion of the transmission chamber. A rotatable fluid-propelling element partly submerged in the lubrication fluid contained within the reservoir portion ensures that sufficient but not excessive lubrication fluid is supplied to the intermeshing gears and the bearing assemblies.

Abstract: A pump assembly particularly for use in high pressure operations is disclosed, which pump assembly is a barrel casing cartridge pump assembly which includes a pump cartridge having a plurality of impeller stages, and a barrel body casing which encases a portion of the pump cartridge. The barrel casing includes a centrally located suction branch which directly feeds a first impeller stage which is located centrally of the pump cartridge. Each impeller of the pump cartridge includes an eye for receiving fluid, the arrangement being such that each eye faces towards the suction branch.

Abstract: A pump has a housing defining a pump chamber and having a shaft opening. An impeller shaft extends through the shaft opening and is sized to define a gap between the impeller shaft and the shaft opening. An impeller is attached to the shaft inside the pump chamber. The impeller includes a first set of impeller blades for transporting fluid through the pump chamber and a second set of impeller blades for creating a pressure force which pushes fluid away from the shaft opening. The pump with sealless shaft prevents fluid from leaking through the gap, and therefore is particularly suited for use in a tank-type vacuum cleaner capable of collecting both dry material and fluid. The gap is used in such an application to prime the pump, thereby discharging fluid collected in the tank.

Abstract: A centrifuge compression combustion turbine employing curved radial downward sloping impeller blade compressor fan units, which densify in two stages the air entering the turbine before entering the combustor section, or alternatively when placed within the turbine exhaust air stream, converts the energy in the air exhaust stream leaving into rotational energy.

Abstract: A two stage compressor for a gas turbine engine with a mixed flow first stage, a centrifugal second stage, and an intermediate duct. The mixed flow stage has a mixed rotor rotatable about the central compressor axis with a circumferential array of mixed flow blades between the mixed flow hub and an associated mixed flow shroud. The downstream centrifugal stage has a centrifugal rotor rotatable about the same compressor axis. The centrifugal rotor has a circumferential array of radially extending centrifugal flow blades between the centrifugal flow hub and an associated centrifugal flow shroud. An intermediate duct has an inner duct wall defining an axially curvilinear transition surface of revolution between an outlet end of the mixed flow hub and an inlet end of the centrifugal flow hub and an outer duct wall defining an axially curvilinear transition surface of revolution between an outlet end of the mixed flow shroud and an inlet end of the centrifugal flow shroud.

Abstract: A steam turbine includes a turbine casing, in which a turbine rotor is accommodated so as to extend along a direction of flow of steam, and a plurality of turbine pressure sections are mounted to the turbine rotor, which includes, in combination, at least two or more of a turbine high pressure portion, a turbine intermediate pressure portion and a turbine low pressure portion. The turbine casing is divided into two casing sections, each of the divided turbine casing sections being further divided into a turbine casing upper half and a turbine casing lower half, and the turbine casing lower halves of the divided turbine casing sections being connected to each other by a fastening member such as stud bolt inserted from a side of the turbine low pressure portion.

Abstract: A gas turbo-machine and method of designing and constructing such machine includes preselecting specific operating conditions for the gas turbo-machine, and constructing a master stage as a model to have a given design and geometric shape which results in substantially the optimum efficiency during operation of the master stage at the preselected operating conditions. At least one additional stage is then added to the master stage which is substantially identical to the master stage in geometric shape and design, but in which the linear dimensions of the additional stage differ from those of the master stage in accordance with the formula LT={square root over (DT+L )} where L is the ratio of the linear dimensions of the additional stage to the master stage and D is the gas density ratio of the master stage.

Abstract: A complex cooling fan includes an upper fan including an upper fan and a lower fan, the upper fan including a first cylindrical body, a plurality of first blades extending outwardly from the cylindrical shell body, and a cylindrical collar extending downwardly from the first cylindrical shell body, the cylindrical collar having a smaller diameter than the first cylindrical shell body, a lower edge of the first cylindrical shell body being formed with a positioning notch, and a lower fan including a second cylindrical shell body and a plurality of second blades extending outwardly from the second cylindrical shell body, the second cylindrical shell body having same outer diameter as the first cylindrical shell body and having an upper edge formed with a protuberance configured to engage with the positioning notch of the first cylindrical shell body, an inner diameter of the second cylindrical shell body having same size as an outer diameter of the cylindrical collar, the cylindrical collar being fitted into th

Abstract: A steam turbine includes a turbine casing, in which a turbine rotor is accommodated so as to extend along a direction of flow of steam, and a plurality of turbine pressure sections are mounted to the turbine rotor, which includes, in combination, at least two or more of a turbine high pressure portion, a turbine intermediate pressure portion and a turbine low pressure portion. The turbine casing is divided into two casing sections, each of the divided turbine casing sections being further divided into a turbine casing upper half and a turbine casing lower half, and the turbine casing lower halves of the divided turbine casing sections being connected to each other by a fastening member such as stud bolt inserted from a side of the turbine low pressure portion.

Abstract: A thrust reverser cascade flow directing element (28) for a gas turbine engine (10) comprises a plurality of plates (30) and a plurality of flow directing vanes (40). At least one vane (40) extends between each pair of plates (30), the plurality of plates (30) are formed from sheet material and a single integral piece of ductile sheet material (32) forms the plurality of flow directing vanes (40). The single integral piece of ductile sheet material (32) has a plurality of longitudinally spaced apart apertures (36) and a plurality of longitudinally spaced apart sheet material portions (38) between the apertures (36) and the ductile sheet material (32) is bent at a plurality of longitudinally spaced positions such that each sheet material portion (38) defines one of the plurality of flow directing vanes (40).

Abstract: A compressed gas or pneumatically actuated turbine-type vibrator having an outer housing 12, a rotor assembly 14 that is freely rotatable within a cylindrical chamber 16 formed in the outer housing 12. The rotor assembly 14 includes a plurality of V-shaped blades for driving the rotor assembly when and as a propelling surface 36 of the rotor assembly is acted upon by a compressed gas flowing through an inlet port to and towards the propelling surface 36. The outer housing further includes at least one exhaust port for exhausting spent gas from the cylindrical chamber. The V-shaped blade members provide an efficient use of the compressed gas for the vibratory forces developed.

Abstract: A device for admixing a first fluid into a second fluid. The device has a housing with a rotationally symmetrical rotation chamber defined therein that is arranged with an inlet for the second fluid and an outlet for the mixed fluids. A distance from a center shaft of the housing to its inner wall is decreasing continuously from the inlet to the outlet. The device has rotation means for setting the second fluid in rotation along the inner wall of the rotation chamber. The device also has adding means for adding the first fluid into the vortex that is formed when the second fluid is rotating in the rotation chamber.

Abstract: A blade and a series of blades are provided for implementation into a device, such as, for example, a turbine, a fan, a pump or the like. The blades are substantially flat and include at least one rib or irregularity peripherally formed in the blade equidistantly from the center of the blade. The blade may include one or more ribs and the ribs are formed equidistantly on each blade such that a plurality of blades may be stacked closely without interference from the ribs formed in adjacent blades.