Impeller Blades Extending From Opposite Sides Of Common Central Support Patents (Class 415/98)
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Patent number: 11576419Abstract: Apparatus and methods for bulk processing items on a conveyor belt using an angled axial fan that extends obliquely into a processing chamber and includes a curved back wall forming an air flow chamber. The angled axial fan enhances air flow around a product being processed on the conveyor belt. A heater employs shrouds and a series of baffle plates held together using a connecting pin to heat circulated air in a low-pressure area below the conveyor belt. Baffles in an upper chamber mix and direct heated, circulated air over the conveyed product.Type: GrantFiled: December 12, 2018Date of Patent: February 14, 2023Assignee: Laitram, L.L.C.Inventors: Christopher G. Greve, Robert S. Lapeyre, Kyle J. Sedlacek
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Patent number: 11473586Abstract: A thin cooling fan includes a fan shell, a motor, a plurality of blades, and a PCB. The fan shell comprises a base plate and a shell cover which cover to each other to form an inner space. The base plate has a first surface facing toward the inner space and a second surface having a receiving space and opposite to the first surface. The motor is combined in the inner space. The blades are disposed in the inner space and rotated by the motor. The PCB is disposed in the receiving space and flush with the second surface. Thus, the whole thickness of the cooling fan is reduced and the flow channel design in the inner space is not affected.Type: GrantFiled: October 10, 2019Date of Patent: October 18, 2022Assignee: DELTA ELECTRONICS, INC.Inventors: Cheng-Wei Chen, Hsiang-Jung Huang
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Patent number: 11313384Abstract: An arrangement having an impeller that rotates about an axis and a stationary diffuser located downstream with guide vanes. The impeller has an inlet for an axial supply flow and an outlet for a radial out-flow, wherein radially and axially extending rotor blades are arranged between a wheel disc and a cover disc of the impeller. The impeller channels are separated from one another in a circumferential direction. The diffuser extends substantially radially along a main flow direction and has an axial channel width. The diffuser has a diffuser inlet and outlet, wherein guide vanes extending axially along a blade vertical direction and radially along a through-flow direction are arranged between the wheel disc side and the cover disc side of the diffuser, which separate the guide vane channels from one another. An inlet edge angle is smaller on the cover disc side than on the wheel disc side.Type: GrantFiled: August 20, 2018Date of Patent: April 26, 2022Assignee: SIEMENS ENERGY GLOBAL GMBH & CO. KGInventors: Uwe Martens, Nico Petry
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Patent number: 11248613Abstract: A centrifugal compressor is provided with a return vane including a suction surface facing a front side in a rotation direction of a rotation shaft and a pressure surface facing a rear side. A casing includes a hub side wall surface and a shroud side wall surface that form a placement region of the return vane in the straight flow path, and an intermediate suction port formed on the shroud side wall surface, the intermediate suction port ejecting fluid guided from outside toward the straight flow path; and inside the return vane, an internal flow path is formed in which one end communicates with the intermediate suction port and another end is an outlet port that opens to the suction surface of the return vane.Type: GrantFiled: January 14, 2021Date of Patent: February 15, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Miku Kuroda, Chihiro Myoren
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Patent number: 11225977Abstract: An arrangement having an impeller that rotates about an axis and a stationary diffuser located downstream with guide vanes. The impeller has an inlet for an axial supply flow and an outlet for a radial out-flow, wherein radially and axially extending rotor blades are arranged between a wheel disc and a cover disc of the impeller. The impeller channels are separated from one another in a circumferential direction. The diffuser extends substantially radially along a main flow direction and has an axial channel width. The diffuser has a diffuser inlet and outlet, wherein guide vanes extending axially along a blade vertical direction and radially along a through-flow direction are arranged between the wheel disc side and the cover disc side of the diffuser, which separate the guide vane channels from one another. An inlet edge angle is smaller on the cover disc side than on the wheel disc side.Type: GrantFiled: August 20, 2018Date of Patent: January 18, 2022Assignee: SIEMENS ENERGY GLOBAL GMBH & CO. KGInventors: Uwe Martens, Nico Petry
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Patent number: 10865802Abstract: A double-sided impeller with a dual intake fluid housing apparatus is designed to suction an extraneous fluid through both a first intake and a second intake, where gases trapped in the fluid housing may escape and mitigate cavitation. The apparatus includes a fluid impeller, a fluid housing, an output volute, and a shaft. The fluid impeller is double-sided with a first plurality of blades and a second plurality of blades respectively adjacent to the first intake and the second intake. The fluid housing surrounds the fluid impeller and in fluid communication with the extraneous fluid. The shaft is rotationally coupled with the fluid impeller such that torque applied to the shaft applies torque to the fluid impeller. The output volute is in fluid communication with the fluid housing and tangentially positioned such that the motion of the extraneous fluid in the fluid housing is directed toward the output volute.Type: GrantFiled: May 9, 2019Date of Patent: December 15, 2020Inventors: Philip Wessels, Marco Doda
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Patent number: 10718342Abstract: A centrifugal fan includes an impeller, a motor and a fan frame. The motor is connected with the impeller and configured to drive the impeller. The fan frame includes a base plate, a top plate, a sidewall and air deflectors. The impeller is disposed between the base plate and the top plate. The sidewall is disposed on the base plate between the base plate and the top plate. A flow channel is between the impeller and the sidewall. The air deflectors are directly connected to the base plate and the top plate, and disposed toward an air outlet and sequentially at different radial positions outwardly from the sidewall along a forward circumferential direction toward an air outlet with respect to the impeller to sequentially expand the flow channel outwardly in a radial direction at different circumferential positions along the forward circumferential direction with respect to the impeller. The airflow entry tunnels are formed by the air deflectors between the base plate and the top plate.Type: GrantFiled: June 7, 2019Date of Patent: July 21, 2020Assignee: DELTA ELECTRONICS, INC.Inventors: Ya-Ting Chang, Hsiang-Jung Huang
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Patent number: 10683873Abstract: A multiple channel diffuser having an annular shaped radial inlet and a tangential outlet, and a plurality of separated diffuser channels connecting the radial inlet to the tangential outlet such that a flow does not mix. A tap-off passage can be used to provide flow to a gas generator or a preburner. A cross-over passage can also be used to provide flow from a first diffuser to a second diffuser.Type: GrantFiled: November 14, 2017Date of Patent: June 16, 2020Assignee: P3 Technologies, LLCInventor: Brandon A Demski
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Patent number: 10451081Abstract: Provided is a turbofan producing reduced noise and easily manufactured. A coupling portion between a blade main portion and a blade cover is formed in a surface region (pressure surface) parallel to a direction of air flowing over the pressure surface of each blade. With this configuration, the air sucked from a direction of a rotation axis of a turbofan is less liable to enter a gap of the coupling portion of the blade, thereby being capable of reducing noise. Further, noise is reduced so that high-precision dimensional control of the gap of the coupling portion of the blade is not required. Consequently, dimensional control at the time of manufacture is facilitated to thereby facilitate manufacture.Type: GrantFiled: April 20, 2015Date of Patent: October 22, 2019Assignee: Mitsubishi Electric CorporationInventors: Kazuki Isomura, Makoto Kurihara
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Patent number: 10436210Abstract: An impeller which can be rotated about a rotation axis X-X, the impeller comprising a shroud having opposed inner and outer faces and an outer peripheral edge portion remote from the rotation axis, a plurality of pumping vanes projecting from the inner face of the shroud, a plurality of auxiliary vanes projecting from the outer face of the shroud, one or more of the auxiliary vanes having an inner edge which is closer to the rotation axis and an outer edge which is closer to the peripheral edge portion of the shroud, the auxiliary vanes extending in a direction between the rotation axis towards the outer peripheral edge portion of the shroud, one or more of the auxiliary vanes having a leading side and a trailing side each of which extends from the inner edge to the outer edge with an upper side spaced from the outer face of the shroud, and at least one projection extending from the trailing side of one or more of the said auxiliary vanes, and preferably each auxiliary vane.Type: GrantFiled: August 14, 2015Date of Patent: October 8, 2019Assignee: WEIR MINERALS AUSTRALIA LTD.Inventor: Craig Ian Walker
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Patent number: 9431875Abstract: A turbine generator uses a common bearing carrier to support a high-speed spool and a low-speed spool, thereby enabling a more axially compact turbine generator design. The high-speed spool includes a high-speed compressor assembly mechanically powered by a high-speed turbine, which receives power from a combustion chamber between the high-speed turbine and the high-speed compressor assembly. The low-speed spool includes a pre-combustion power turbine aerodynamically powered by the compressor assembly and upstream of the combustion chamber. The pre-combustion turbine mechanically powers an electrical generator, which includes coreless stators and a rotor assembly. The stators have a planar configuration to receive axial flux from magnets of the rotor assembly. Optionally, the low-speed spool may include a post-combustion turbine that is arranged downstream of the combustion chamber and that mechanically powers the electrical generator.Type: GrantFiled: March 28, 2014Date of Patent: August 30, 2016Assignee: Scaled Power Corp.Inventors: Rory Colm Keogh, Gregory Thomas
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Patent number: 9297385Abstract: A vortex prevention device is capable of preventing creation of air entrained vortex and also provides a double suction vertical pump having such a vortex prevention device. The vortex prevention device is used in combination with the double suction vertical pump which is installed in an open channel and has an upper suction opening and a lower suction opening. The vortex prevention device includes a plate member as a vortex prevention structure arranged above the upper suction opening. The plate member is arranged away from the upper suction opening such that a passage is formed between the plate member and the upper suction opening.Type: GrantFiled: September 24, 2010Date of Patent: March 29, 2016Assignee: EBARA CORPORATIONInventors: Takashi Yamanaka, Dai Kudo, Shuichiro Honda, Takashi Enomoto
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Patent number: 9267507Abstract: A blade structure for centrifugal fan includes a hub, a first blade unit, and a second blade unit. The hub includes at least one connection section, to a radially outer end of which an annular body is connected. The annular body has a first side and an opposite second side; and the first and the second blade unit are arranged on and spaced along the first and the second side of the annular body, respectively. By providing the first and the second blade unit around the hub of a centrifugal fan, the air flows and pressure produced by the centrifugal fan can be largely increased at effectively reduced noise.Type: GrantFiled: October 5, 2011Date of Patent: February 23, 2016Assignee: ASIA VITAL COMPONENTS CO., LTD.Inventor: Chun-Ming Wu
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Patent number: 9017011Abstract: A blower having a blower housing having a cutoff and a top portion with an air outlet opening, a fan within the blower housing, the fan being adapted for rotation about a fan axis and having an outer diameter with a distance between the outer diameter of the fan and the top portion of the air outlet opening extending along a vertical line between the fan axis and the air outlet opening being less than seventy-five percent of the distance between the outer diameter of the fan and the cutoff of the blower housing extending along a line between the fan axis and the cutoff, and a motor having a stator and a rotor, the rotor being rotatably coupled to the stator for rotation about the fan axis, the rotor and fan being coupled such that the fan rotates with the rotor.Type: GrantFiled: January 20, 2012Date of Patent: April 28, 2015Assignee: Regal Beloit America, Inc.Inventors: William Stuart Gatley, Jr., Steven W. Post
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Patent number: 8721262Abstract: A vertical centrifugal pump comprises a housing, impeller, annular guiding vanes, annular outlet with outer and inner casings, forming a collector with a pressure pipe, and flow channels to lower and upper rims. Channels to the lower rim pass through the center of the pump axis. Blades direct flow between pipes into the pressure pipe. Pipes are connected with the lower rim through the lower confuser with flat radial ribs, positioned with the inner part of the confuser from the pipes and the outer part from the inner casing to the lower rim. An annular baffle is implemented between the housing and outer casing, dividing the inlet to the rims. Channels to the upper rim are created between the two annular elements, connected by radial outer ribs with a thickened, streamlined form and mated with flat inner ribs, merged in the upper confuser similarly to the lower confuser.Type: GrantFiled: November 11, 2013Date of Patent: May 13, 2014Inventor: Alexander Ivanovich Kuropatov
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Patent number: 8684661Abstract: A fan module includes a housing and an impeller. The housing has an axial air inlet, a radial air inlet and at least one radial air outlet. The impeller is rotatably disposed in the housing and has a first air-guiding blade, a second air-guiding blade and a partitioning member. The partitioning member separates an interior space of the housing into a first air channel and a second air channel. The first air-guiding blade is located in the first air channel, and the second air-guiding blade is located in the second air channel.Type: GrantFiled: February 16, 2011Date of Patent: April 1, 2014Assignee: Sunonwealth Electric Machine Industry Co., LtdInventors: Alex Horng, Wen-Kuan Chen
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Patent number: 8517012Abstract: A multiple stage variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the multiple stage blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.Type: GrantFiled: June 10, 2004Date of Patent: August 27, 2013Assignee: ResMed LimitedInventors: Geoffrey Daniel Daly, Alexander Virr, Stephen Anthony Lea, Dion Charles Chewe Martin, Nicholas Jerome Reed, Larry Puckeridge, Timothy Tsun-Fai Fu
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Patent number: 8499760Abstract: A variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.Type: GrantFiled: July 6, 2012Date of Patent: August 6, 2013Assignee: Resmed LimitedInventors: Geoffrey D. Daly, Alexander Virr, Stephen A. Lea, Dion Charles C. Martin, Nicholas J. Reed, Larry Puckeridge, Timothy Tsun-Fai Fu
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Patent number: 8469654Abstract: A rotary-type fluid machine which enables practical and effective operation in an extremely low specific speed range. The rotary-type fluid machine (1, 1?) has an impeller (10, 10?) integrally connected to a rotating drive shaft (2). The impeller is accommodated in a casing (3). Fluid (a) of a suction fluid passage (4) to be pumped flows into a center part (11) of the impeller. The fluid (b) is discharged from a peripheral portion (12) of the impeller by the effect of the centrifugal force of the rotating impeller, so that the fluid is delivered through a delivery fluid passage (5) outside of the casing. Many grooves (15) extending toward a peripheral edge of the impeller from the center part of the impeller are formed on the impeller. The groove opens on an outer circumferential surface (18) of the impeller, and causes strong recirculation vortices (R) to be formed in the vicinity of the peripheral edge of the impeller when the impeller rotates.Type: GrantFiled: January 14, 2009Date of Patent: June 25, 2013Assignee: National University Corporation Yokohama National UniversityInventors: Junichi Kurokawa, Shuusaku Kagawa
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Patent number: 8444370Abstract: A rotary wheel for radial pumps includes an intermediate wall at which one or more vanes are provided on both sides. Passage openings are formed in the intermediate wall in order to distribute a desired pump flow onto the vanes on both sides of the intermediate wall.Type: GrantFiled: July 5, 2004Date of Patent: May 21, 2013Assignee: Sulzer Pumpen AGInventor: Johann Gülich
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Patent number: 8403627Abstract: In a water pump for pumping coolant in a low temperature and a high temperature circuit with low temperature and high temperature housings each including a spiral flow guide structure, and a single rotor disposed in the joined housings and having a low temperature rotor part for pumping coolant through the low temperature circuit and a high temperature rotor part for pumping coolant through the high temperature circuit, the housings are joined with a heat isolating structure disposed between the flow guide structures of the high temperature and the low temperature housings to limit heat transfer from the high temperature coolant pumped through the high temperature housing to the low temperature coolant pumped through the low temperature housing.Type: GrantFiled: November 14, 2009Date of Patent: March 26, 2013Assignee: MTU Friedrichshafen GmbHInventors: Michael Hartmann, Manfred Sulzmann
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Patent number: 8225786Abstract: A variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.Type: GrantFiled: February 9, 2007Date of Patent: July 24, 2012Assignee: ResMed LimitedInventors: Geoffrey D. Daly, Alexander Virr, Stephen A. Lea, Dion Charles C. Martin, Nicholas J. Reed, Larry Puckeridge, Timothy Tsun-Fai Fu
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Patent number: 8167550Abstract: 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.Type: GrantFiled: December 10, 2008Date of Patent: May 1, 2012Assignee: Denso CorporationInventors: Takahito Nakamura, Koji Ito, Masaharu Sakai
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Patent number: 8152443Abstract: A centrifugal pump mounted in an external housing. The pump has a split housing containing an impeller with outwardly extending vanes that is mounted on a drive shaft. The drive shaft at one end is mounted to a sealed bearing within the external housing and at the other end to a drive.Type: GrantFiled: August 30, 2007Date of Patent: April 10, 2012Assignee: Fast Flow, LLCInventor: Steve Pemberton
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Patent number: 8122884Abstract: A double-ended variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the double-ended blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.Type: GrantFiled: May 24, 2005Date of Patent: February 28, 2012Assignee: ResMed LimitedInventors: Geoffrey Daniel Daly, Alexander Virr, Stephen Anthony Lea, Dion Charles Chewe Martin, Nicholas Jerome Reed, Larry Puckeridge, Timothy Tsun-Fai Fu
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Patent number: 8087878Abstract: A powerless diversion plate of a ceiling air-conditioning circulation machine includes a bearing block and a bearing within a circular inflow/outflow hole for installing a diversion disc having a plurality of radial separation pieces. A plurality of conic and ring-shaped diversion pieces are positioned around the connection shaft. The diversion disc is separated by the ring-shaped diversion pieces and the radial separation pieces to create air inflow/outflow zones. The diversion disc has a downward protruding middle part and a staged structure at the rim thereof to form a predetermined shape. This obviates a powered motor, as the radial separation pieces of the diversion disc serve as a working surface, and respond to forced air for causing the diversion disc to be driven in 360° rotation to diffuse air downward or suck air upward in a flowing way, thereby enhancing air-outflowing and convection efficiency and reducing energy consumption and carbon release.Type: GrantFiled: May 28, 2009Date of Patent: January 3, 2012Inventor: Yung-Hua Chen
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Patent number: 8070420Abstract: An airflow-cooling apparatus of a ceiling air-conditioning circulation machine, and more particularly a structure permitting a smooth flow of the indoor air, wherein the drawn current of air passes through a cooling apparatus and then is guided indoors for reducing the temperature. A base frame includes a base frame having a rectangular positioning frame of the rim thereof. A plurality of radial supports are extended from the periphery of the positioning frame inwards. A circular frame is positioned at the center of the base frame. The rim of the circular frame is attached to the radial supports. A fan base is positioned within the circular hole of the circular frame and supported by a plurality of ribs. A plurality of conic and ring-shaped air outflow/inflow channels are concentrically and outwardly interposed between the circular frame and the positioning frame.Type: GrantFiled: May 28, 2009Date of Patent: December 6, 2011Inventor: Yung-Hua Chen
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Patent number: 7966816Abstract: An internal combustion engine includes a number of power cylinders furnishing exhaust gases to at least two turbochargers having a common air inlet housing which is divided into a separate compressor housing for each of the turbochargers.Type: GrantFiled: January 11, 2010Date of Patent: June 28, 2011Assignee: Ford Global TechnologiesInventors: Patrick Matthews, David Krenk, Christopher William Newman, Fadi Maroun Naddaf
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Patent number: 7967500Abstract: An impeller vane assembly for blending liquids with solid particulate matter in which a center drive shaft extends through a housing having a solid particle inlet and a liquid inlet together with an outlet, and upper and lower impeller vanes are aligned respectively with the particle inlet and liquid inlet to cause intermixing of the solids and liquids by counterflow of the liquid into the upper impeller region, the upper and lower vanes being separated by a common divider plate, the upper vanes being radially split and lower vanes having outer split tips, the vanes being operative to balance the point at which the solids and liquid are intermixed between the solid particle inlet and annular space surrounding the impeller. In one embodiment, inner concentric expeller blades are employed with the upper impeller vanes to accelerate the flow of solid particles.Type: GrantFiled: July 16, 2007Date of Patent: June 28, 2011Assignee: CE & M LLCInventors: Jorge O. Arribau, Michael G. Dubic
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Patent number: 7788764Abstract: A suction device for cleaning jobs comprising a bladed impeller (1) actuated by a motor and suitable for being housed inside a carcass provided with an inlet opening for an airflow and an outlet opening, where said impeller (1) comprises a first series of blades (2) and a second series of blades (3), which rotate firmly fixed together, coaxial to each other and distributed in a staggered manner, suitable for respectively generating an axial flow and a radial flow, said second series of blades (3) being arranged downstream of the first series of blades (2), with respect to the inlet opening, so that the air sucked in is transmitted from the first series of blades (2) to the second series of blades (3) before it reaches the outlet opening.Type: GrantFiled: May 17, 2006Date of Patent: September 7, 2010Assignee: EMAK S.p.A.Inventor: William T Cobb, Jr.
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Patent number: 7775758Abstract: An apparatus for adjusting a thrust load on a rotor assembly of a gas turbine engine includes an impeller rear cavity defined between a rear face of an impeller of the rotor assembly and a stationary wall spaced axially apart from the rear surface of the impeller. A pressurized air flow with a tangential velocity is introduced into the impeller rear cavity at a tip of the impeller to pressurize the cavity. Means are provided in the cavity for directly interfering with the tangential velocity of the pressurized air flow to affect an average static pressure of the pressurized air flow within the cavity in order to adjust the thrust load on the rotor assembly caused by the average static pressure in the cavity.Type: GrantFiled: February 14, 2007Date of Patent: August 17, 2010Assignee: Pratt & Whitney Canada Corp.Inventor: Pierre-Yves Legare
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Patent number: 7699580Abstract: A stable portable air moving device capable of generating an air stream elevated above a support surface allowing the air stream to be directed as desired by the user is provided. The device includes an air blower assembly located within an elongate housing generating an exhaust air stream that exits the elongate housing at an elevation above the air blower assembly.Type: GrantFiled: September 16, 2004Date of Patent: April 20, 2010Assignee: Lasko Holdings, Inc.Inventors: William E. Lasko, Paul W. Orr
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Patent number: 7682129Abstract: The present invention provides a filtration device combined with self-priming pump in which a filter replacement work is easy and safe, and removal of air inside of a pump and priming are not necessary.Type: GrantFiled: April 23, 2007Date of Patent: March 23, 2010Assignee: World Chemical Co., Ltd.Inventors: Yoji Mori, Takashi Sasaki, Yasuichi Haga
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Publication number: 20090155048Abstract: A vortex pump impeller utilizes primary blades in combination with splitter blades. An increase in total head is observed through exemplary impellers in a vortex pump, compared to an impeller lacking the splitter blades. Single stage and dual stage pumps utilizing the exemplary impellers are also disclosed. Exemplary pumps may also contain a grinder assembly.Type: ApplicationFiled: November 12, 2008Publication date: June 18, 2009Applicant: CRANE PUMPS & SYSTEMS, INC.Inventors: Daniel L. SENSEL, Mark KOWALAK
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Publication number: 20090142179Abstract: A centrifugal fan includes a fan frame (20), and a stator (30) and a rotor (40) received in the fan frame. The fan frame includes a bottom base (22), an opposite top cover (21) and a side wall (23) interconnecting the bottom base and the top cover. A first air inlet (24a) is defined in the top cover and a second air inlet (24b) is defined in the bottom base. The rotor includes a hub (41) and a plurality of blades (42) extending from an outer periphery of the hub. An air flow channel (48) is formed between an outer periphery of the blades and the side wall of the fan frame. A cylindrical wall (26, 26a) is formed around one of the first air inlet and the second air inlet to guide airflow from the first and second air inlets into the air flow channel and block the airflow in the air flow channel from flowing back towards the first and second air inlets.Type: ApplicationFiled: December 18, 2007Publication date: June 4, 2009Applicants: FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD., FOXCONN TECHNOLOGY CO., LTD.Inventors: CHING-BAI HWANG, ZHI-HUI ZHAO, WEN-JIE ZHANG
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Publication number: 20080253879Abstract: The present invention relates to a blower for vehicles, which includes guide walls formed on a bypass passageway formed between a scroll case and an outer case to send the indoor air and the outdoor air to a lower suction opening of the scroll case, thereby reducing suction noise by guiding a uniform flow of air introduced into the lower suction opening, preventing deformation of the outer case, and preventing a droop of the air filter by supporting a lower portion of an air filter when an intake duct injection-molded in a vertically parted mold is applied thereto.Type: ApplicationFiled: April 1, 2008Publication date: October 16, 2008Inventors: Boksun Kang, Yongsang Kim, Yonghung Lee, Yuncheol Park
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Publication number: 20080138191Abstract: A fan includes a fan frame, a front impeller and a rear impeller. The fan frame has a frame body and a plurality of connecting elements. The front impeller has a first bushing disposed at the central portion of the frame body. Two ends of each connecting element are respectively connected with the frame body and the first bushing. The rear impeller has a second bushing partially telescoped into the first bushing.Type: ApplicationFiled: December 3, 2007Publication date: June 12, 2008Inventors: Shun-Chen CHANG, Yi-Ching Chiu
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Patent number: 7334937Abstract: An impeller vane assembly for blending liquids with solid particulate matter in which a center drive shaft extends through a housing having a solid particle inlet and a liquid inlet together with an outlet, and upper and lower impeller vanes are aligned respectively with the particle inlet and liquid inlet to cause intermixing of the solids and liquids by counterflow of the liquid into the upper impeller region, the upper and lower vanes being separated by a common divider plate, and the vanes are characterized by being curved in the direction of rotation of the impeller and having outer radially extending tips which terminate at the outer peripheral edge of the common divider plate, the vanes being operative to balance the point at which the solids and liquid are intermixed between the solid particle inlet and annular space surrounding the impeller.Type: GrantFiled: April 29, 2004Date of Patent: February 26, 2008Inventors: Jorge O. Arribau, Michael G. Dubic
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Patent number: 7217087Abstract: A centrifugal fan comprises an impeller, a motor which is connected and rotates the impeller and a housing which has an intake and an air blowing port for housing the impeller. The impeller has a plurality of blades arranged on a circumference. The intake opens opposed to the right end (in FIG. 1) of the impeller. The air blowing port opens opposed to a side of the impeller. A gap enlarged portion, in which the distance between the outer circumference of the impeller and the inner face of the housing starts to increase at a point where the distance between the outer circumferential of the impeller and the surface of a nose portion is smallest therein, the nose portion being a region of the vicinity of an edge portion of the air blowing port, the edge portion being the closest side to the outer circumference of the impeller.Type: GrantFiled: March 28, 2005Date of Patent: May 15, 2007Assignee: Nidec CorporationInventors: Yusuke Yoshida, Toru Tamagawa, Tomotsugu Sugiyama, Kazumi Takeshita, Masayuki Aoki
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Patent number: 7125219Abstract: The invention relates to a high-pressure fan which comprises an electric motor provided with a shaft that goes through it; blade wheels which are mainly made of a carbon fibre-based composite material, arranged on both sides of the electric motor and mounted directly on the shaft of the electric motor; fan housings surrounding the blade wheels; and an intermediate channel which connects a pressure opening of one fan housing to a suction opening of the other fan housing, the intermediate channel being integrated into the base structure of the high-pressure fan.Type: GrantFiled: November 11, 2002Date of Patent: October 24, 2006Assignee: Flakt Woods ABInventors: Dan Sarin, Kåre Lindroos, Joni Tallgren, Ilppo Sandberg, Jari Kuokkanen, Jukka Blåfield, Olli Majamäki
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Patent number: 7021891Abstract: A back-to-back double-flow bi-directional thrust-balanced micro-impeller for use in optimized compression cycles of small volumetric flow rates is provided. The back-to-back micro-impeller is a component of a compressor capable of generating a pressure head suitable for maintaining the flow rate needed for dissipating heat, such as produced by an electronic component. The back-to-back micro-impeller provides a fluid path on both sides of the micro-impeller, imparting an equal momentum (or velocity) to the fluid. The left and right compressor sections provide a balancing of forces generated by high-pressure fluid against the two sides of the micro-impeller. This reduces vibrational forces and provides a balancing force on the shaft which reduces the thrust on the shaft in a direction away from the gas flow path. Also, the approximately equally distributed mass about the rotation axis X, provides for a balanced impeller which is desirable when operated at high rotation speeds.Type: GrantFiled: December 18, 2002Date of Patent: April 4, 2006Assignee: Intel CorporationInventors: Eduardo A. Sanchez, James G. Maveety, Gregory M. Chrysler
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Patent number: 7018171Abstract: A blower having an enclosure having side walls defining an internal chamber, an open end comprising a first inlet, a second inlet and an outlet. A flow separator plate extends across the internal chamber between the side walls defining a first scroll duct and a second scroll duct. The first scroll duct is in flow communication with the first inlet and the outlet, while the second scroll duct is in flow communication with the second inlet and the outlet. A blower wheel is rotatably mounted in the enclosure through an opening in the separator plate having a first wheel portion disposed in the first scroll duct and a second wheel portion disposed in the second scroll duct.Type: GrantFiled: January 23, 2004Date of Patent: March 28, 2006Assignee: Airex Inc.Inventors: Chun Wang, Enzo Iantorno
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Patent number: 6974246Abstract: A method and apparatus for blending liquids with solid particulate matter in which a center drive shaft extends through a housing having a solid particle inlet and a liquid inlet together with an outlet, and upper and lower impeller vanes are aligned respectively with the particle inlet and liquid inlet to cause intermixing of the solids and liquids by counterflow of the liquid into the upper impeller region. In one embodiment, expeller blades are employed in inner concentric relation to the upper impeller vanes to accelerate the flow of solid particles into the upper impeller region, and baffle plates or deflector members are employed above and below the upper and lower impellers to prevent any leakage of liquid into the center of the impeller. In preferred and alternate forms, the impeller vanes are sized to balance the point at which the solids and liquid are intermixed.Type: GrantFiled: May 2, 2003Date of Patent: December 13, 2005Inventors: Jorge O. Arribau, Michael G. Dubic
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Patent number: 6948314Abstract: Turbochargers of this invention comprise a turbine housing and a turbine wheel rotatably disposed therein. A center housing is connected to the turbine housing, and a compressor housing is attached to the center housing. A compressor is rotatably disposed within the compressor housing, and comprises two impellers placed in back-to-back orientation. A movable member is disposed within the compressor housing to downstream of the compressor to control the flow of air within the compressor housing. The position of the movable member can be operated to control the amount of pressurized air that is produced by one of the compressor impellers to provide enhanced compressor operating efficiency throughout the operating range and mass flow requirements of the engine.Type: GrantFiled: September 12, 2003Date of Patent: September 27, 2005Assignee: Honeywell International, Inc.Inventors: Steven Don Arnold, Gary Vrbas, Martin Verschoor
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Patent number: 6910483Abstract: A double-ended variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the double-ended blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.Type: GrantFiled: December 10, 2001Date of Patent: June 28, 2005Assignee: ResMed LimitedInventors: Geoffrey D. Daly, Alexander Virr, Stephen A. Lea, Dion Charles C. Martin, Nicholas J Reed, Larry Puckeridge, Timothy Tsun-Fai Fu
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Patent number: 6824350Abstract: A hydrodynamic sealing system for centrifugal systems comprising a double, asymmetric impeller attached to a rotary shaft, a fixed housing that surrounds the double impeller, a fluid inlet (5) in an axial direction and a fluid outlet in a radial direction with respect to the double impeller, with the double impeller defining a front side which receives the entry of fluid and a rear side close to the sealing zone of the shaft with the fixed housing. The double impeller is provided with means for taking the fluid from its front side to its rear side, so that when the double impeller rotates there arises a control of the pressure in the sealing zone, thus permitting balancing of the stresses on the double impeller and optimization of the sealing system.Type: GrantFiled: February 25, 2003Date of Patent: November 30, 2004Assignee: Careseal, S.L.Inventor: Antonio Pares Criville
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Patent number: 6789999Abstract: An assist airblower unit for a heating and ventilating system of a motor vehicle. The airblower includes a single motor and two centrifugal fan wheels encased within a shell. The motor drives both centrifugal fan wheels via a shaft. The centrifugal fan wheels have angled blades that draws in air from a lateral air inlet located on the shell. The air is then forced out of the outlet openings into the automobiles interior to either heat or cool the vehicle. The air source either outputs at the front of the HVAC unit or recirculation air, i.e., cabin air.Type: GrantFiled: June 11, 2002Date of Patent: September 14, 2004Assignee: Valeo Climate Control CorpInventors: Norbert Anthony Bikos, Stefan Helmut Schwarz, German Ludwig Bosherz
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Publication number: 20040120802Abstract: A back-to-back double-flow bi-directional thrust-balanced micro-impeller for use in optimized compression cycles of small volumetric flow rates is provided. The back-to-back micro-impeller is a component of a compressor capable of generating a pressure head suitable for maintaining the flow rate needed for dissipating heat, such as produced by an electronic component. The back-to-back micro-impeller provides a fluid path on both sides of the micro-impeller, imparting an equal momentum (or velocity) to the fluid. The left and right compressor sections provide a balancing of forces generated by high-pressure fluid against the two sides of the micro-impeller. This reduces vibrational forces and provides a balancing force on the shaft which reduces the thrust on the shaft in a direction away from the gas flow path. Also, the approximately equally distributed mass about the rotation axis X, provides for a balanced impeller which is desirable when operated at high rotation speeds.Type: ApplicationFiled: December 18, 2002Publication date: June 24, 2004Inventors: Eduardo A. Sanchez, James G. Maveety, Gregory M. Chrysler
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Patent number: 6736610Abstract: A blower fan comprises a support element (13) presenting a first face (13a) and a second face (13b) mutually opposite to said first face (13a), the first and the second faces (13a, 13b) being respectively invested at least by a first and a second air flows (10, 11) coming from mutually opposite directions, a first blade series emerging at least from said second face (13b), and at least one air passage (13c) provided in the support element (13) and adapted to direct at least said first air flow (10) investing said first face (13a) at least partly through said support element (13).Type: GrantFiled: April 22, 2002Date of Patent: May 18, 2004Assignee: Cifarelli S.p.A.Inventor: Roberto Cifarelli
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Patent number: 6733230Abstract: An impeller pump has a pump casing (6) that defines a pump chamber. The pump chamber includes a first chamber (21) and a second chamber (22). An impeller (10) is rotatably disposed within the pump chamber. The impeller has a first groove group and a second groove group on opposite surfaces. The first groove group and the second groove group oppose to the first chamber and the second chamber, respectively, so that a fluid is draw into and discharged from the first and second chambers as the impeller rotates. The flows of the fluid discharged from the first and second chambers are converged at a converging channel (26). Pulsations of the fluid discharged from the fist and second chambers are canceled each other when the flows converge at the converging channel.Type: GrantFiled: March 11, 2003Date of Patent: May 11, 2004Assignee: Aisan Kogyo Kabushiki KaishaInventors: Satoshi Miura, Masaki Ikeya