Rotary Patents (Class 417/247)
  • Patent number: 10753281
    Abstract: A multi-shaft assembly includes an inner shaft and an outer shaft coaxially aligned with the inner shaft to establish a shared axis of rotation. The multi-shaft assembly also includes an ablatable shaft feature with a lubricant surface coating on an interior surface of the outer shaft and an ablatable metallic alloy layer overlaying a portion of the lubricant surface coating with a radial air gap formed between the ablatable metallic alloy layer and an exterior surface of the inner shaft.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: August 25, 2020
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Kaliya Balamurugan, Jason Husband
  • Patent number: 10365021
    Abstract: A cooling apparatus includes a compressor; a condenser for condensing a refrigerant discharged from the compressor, an expansion valve to expand the refrigerant discharged from the condenser, and an evaporator to evaporate the refrigerant discharged from the expansion valve and to deliver the refrigerant to the compressor. The compressor includes a rotary compressor having a displacement volume less than about 3 cc, and refrigerant circulating inside the cooling apparatus includes at least one of R290, R600a, R123a, R1234yf, and R1234ze. The cooling apparatus and compressor attain miniaturization and high efficiency.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: July 30, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo Dol Park, Jeong Bae Lee, Min-Soo Yang, Chi Dae Yang
  • Patent number: 10150135
    Abstract: Provided is a booth that includes a booth housing that defines an area for locating or positioning a vehicle to undergo a filling, priming, and/or painting operation as part of an overall vehicle collision damage repair process. The booth includes a first air handling system and a second air handling system that is in fluid communication with an air extraction tool. The first handling system includes an air intake, a pressurized plenum, a filter to filter air from the air plenum before that enters into the interior of the housing, and an air exhaust. The second air handling system includes flexible and static conduits that are in communication with each other and in communication with an air exhaust outlet for removing debris and particulate from a sealed application area located adjacent the vehicle being repaired.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: December 11, 2018
    Assignee: DCR IP COMPANY, LLC
    Inventors: Michael Giarrizzo, Jr., Douglas Kirk
  • Patent number: 10041698
    Abstract: The purpose of the present invention is: to enable hot water at a required temperature to be supplied, even in cases when compressor load factor is low; to suppress heat dissipation from a waste-heat recovery device; and to improve waste-heat recovery rate. A waste-heat recovery system in an oil-cooled gas compressor is provided with: a compressor main body (3); an oil separator (6); gas piping (8) which supplies, to a demanded destination, compressed gas separated from oil by the oil separator; oil piping (7) which returns, to the compressor main body, the oil separated by the oil separator; and a waste-heat-recovery heat exchanger (10) which recovers heat from the compressed gas and/or the oil.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: August 7, 2018
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kentaro Yamamoto, Masahiko Takano
  • Patent number: 10041408
    Abstract: A turbine engine is provided that includes a turbo-compressor and a combustor section. The turbo-compressor includes a compressor section and a turbine section. The combustor section is fluidly coupled between the compressor section and the turbine section. The compressor section includes a first number of stages. The turbine section includes a second number of stages that is different than the first number.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: August 7, 2018
    Assignee: United Technologies Corporation
    Inventors: Daniel B. Kupratis, William G. Sheridan
  • Patent number: 10001143
    Abstract: A method for assembling a compressor comprises: a bundle arrangement step in which a bundle is arranged behind the opening of a casing in the insertion direction; a first insertion step in which the front end of the bundle is inserted into the casing by moving the bundle by means of both an outside traveling device and an intermediate traveling device; and a second insertion step in which the intermediate traveling device is removed from the bundle and the bundle is inserted further inward into the casing by moving the bundle by means of both an inside traveling device and the outside traveling device.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: June 19, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Satoru Yoshida, Toru Yoshimune
  • Patent number: 9938898
    Abstract: A geared turbofan gas turbine engine includes a fan section and a core section. The core section includes a compressor section, a combustor section and a turbine section. The fan section includes a gearbox and a fan. A low spool includes a low turbine within the turbine section and a forward connection to a gearbox for driving the fan. The low spool is supported for rotation about the axis at a forward most position by a forward roller bearing and at an aft position by a thrust bearing.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: April 10, 2018
    Assignee: United Technologies Corporation
    Inventors: Brian D. Merry, Gabriel L. Suciu
  • Patent number: 9879691
    Abstract: A pump a shaft portion arranged to extend in a vertical direction; a rotor portion arranged to surround an outer circumference of the shaft portion, and including a magnet; and a housing joined to the shaft portion, and arranged to contain the rotor portion. The housing includes a stator arranged opposite to the magnet; a rotor accommodating portion arranged to accommodate the rotor portion; and an inlet and an outlet each of which is arranged to pass through a portion of the rotor accommodating portion. A surface of at least one of the rotor portion, the shaft portion, and the rotor accommodating portion includes at least one first dynamic pressure groove arranged to support rotation of the rotor portion. A surface of at least one of the rotor portion and the rotor accommodating portion includes at least one second dynamic pressure groove arranged to transfer a fluid from the inlet to the outlet.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: January 30, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Junya Mizukami, Hideki Nishimura, Yoshito Nishitani, Michihiro Ito, Naohiro Nagasawa
  • Patent number: 9670749
    Abstract: An integrated pump assembly for both delivering mud and cement slurry to a borehole during a well completion operation. The pump assembly includes separate mud and cement pumps for maintaining isolation between mud and cement slurry during different stages of the operation. However, in order to obviate the need for a dedicated cement pump prime mover, the cement pump may be driven by the mud pump itself or a prime mover coupled to the mud pump. In the case of coupling the cement pump to the mud pump a hydraulic line may be employed such that hydraulically compatible mud and cement pumps may be more remotely positioned relative to one another if so required based on equipment blueprints for a given well completion facility to be located at a production site.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: June 6, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jean-Louis Pessin, Laurent Coquilleau
  • Patent number: 9541007
    Abstract: A coupling shaft assembly for a gas turbine engine includes a forward coupling shaft section with a forward interface spline and a forward mid shaft interface spline and an aft coupling shaft section includes an aft mid shaft interface spline and an aft interface spline, the aft mid shaft interface spline engageable with the forward mid shaft interface spline.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: January 10, 2017
    Assignee: United Technologies Corporation
    Inventors: Michael E. McCune, Brian P. Cigal
  • Patent number: 9441638
    Abstract: An oil-cooled gas compressor provided with: a compressor body (3); an oil separator (6) that separates out oil from a compressed gas; a gas pipe (8) for sending the compressed gas, from which oil has been separated out by the oil separator, to a user; and an oil pipe (7) for returning, to the compressor, the oil separated out by the oil separator. The following are also provided: an air-cooled heat exchanger (13) for cooling the aforementioned oil; a controllable-speed cooling fan (14) for blowing cooling air at said air-cooled heat exchanger; and a waste-heat-recovery heat exchanger (10), provided upstream of the air-cooled heat exchanger, for recovering heat from the oil flowing through the abovementioned oil pipe. The speed of the cooling fan is controlled so as to bring the temperature of the compressed gas discharged from the compressor body to within a prescribed range.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: September 13, 2016
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Masahiko Takano, Hideharu Tanaka
  • Patent number: 9381470
    Abstract: A coating equipment for composite membrane without diffusion pump and its thickness gauge for both thick and thin coatings comprises a coating equipment for composite membrane without diffusion pump and a thickness gauge for both thick and thin coatings. A vacuum pump system of the coating equipment for composite membrane without diffusion pump is a roots-type pump system. Compared to conventional diffusion pumps, roots-type pump have advantages of low energy consumption, stable performance, good vacuum-pumping effect, short starting time, etc.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: July 5, 2016
    Assignee: Shanghai Honghao Enterprise Development CO., LTD
    Inventors: Shengfan Chen, Xiandong Chen, Yuna Jiang, Shengzhen Chen, Fajie Chen
  • Patent number: 9228586
    Abstract: A pump having at least two fluid drivers and a method of delivering fluid from an inlet of the pump to an outlet of the pump using the at least two fluid drivers. Each of the fluid drives includes a prime mover and a fluid displacement member. The prime mover drives the fluid displacement member to transfer fluid. The fluid drivers are independently operated. However, the fluid drivers are operated such that contact between the fluid drivers is synchronized. That is, operation of the fluid drivers is synchronized such that the fluid displacement member in each fluid driver makes contact with another fluid displacement member. The contact can include at least one contact point, contact line, or contact area.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: January 5, 2016
    Assignee: Project Phoenix, LLC
    Inventor: Thomas Afshari
  • Patent number: 9028222
    Abstract: A variable output pump includes a fluid input, a control stage pump having an input portion and an output portion, a main stage pump having an input portion and an output portion, and a differential linkage in mechanical communication with the control stage pump and the main stage pump. The input portion of the control stage pump is in fluid communication with the fluid input and the input portion of the main stage pump is in fluid communication with the fluid input and the output portion of the control stage pump.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: May 12, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Robert H. Perkinson
  • Publication number: 20150125314
    Abstract: A vertical gas cooler suitable for use as an intercooler in a multi-stage compressor includes an inlet at its upper portion, a tube bundle, a centrally disposed mist eliminator assembly and a side-draw outlet. Optionally provided is a drain pipe from the mist eliminator assembly to a sump located below the side-draw outlet.
    Type: Application
    Filed: May 23, 2013
    Publication date: May 7, 2015
    Inventors: Chessley Alan Hungerford, Mark Henry Sprow
  • Patent number: 8734126
    Abstract: A screw compressor includes a low pressure stage compressor body; a high pressure stage compressor body that further compresses a compressed air compressed by the low pressure stage compressor body; pinion gears for example, respectively, provided on, for example, a male rotor of the low pressure stage compressor body and, for example, a male rotor of the high pressure stage compressor body; a motor; a bull gear for example, provided on a rotating shaft of the motor; and an intermediate shaft supported rotatably and provided with a pinion gear, which meshes with the bull gear, and a bull gear, which meshes with the pinion gears. Thereby, it is possible to make the motor relatively low in rotating speed while inhibiting the gears from being increased in diameter, thus enabling achieving reduction in cost.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: May 27, 2014
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Hitoshi Nishimura, Tomoo Suzuki, Hiroshi Ohta
  • Patent number: 8632320
    Abstract: An integrated high-pressure compression unit for a process fluid that includes at least a first compression device able to compress the process fluid from a essentially gaseous initial thermodynamic state to an intermediate thermodynamic state, a second compression device connected mechanically to the first compression device and able to compress the process fluid from the intermediate thermodynamic state to a final thermodynamic state, a motor device able to drive the first compression device and the second compression device, and a pressure casing or housing in which at least the said first and second compression devices are mechanically coupled to each other.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: January 21, 2014
    Assignee: Nuovo Pignone S.p.A.
    Inventors: Sergio Palomba, Andrea Masi, Marco De Iaco, Massimo Camatti, Lorenzo Bergamini
  • Patent number: 8591199
    Abstract: An improved system and methodology for starting up a gas-turbine driven multi-stage compressor. The improvement involves isolating individual compression stages and creating positive pressure in each stage prior to initiating rotation of the compressor/driver system. The isolation of individual compression stages allows the turbine to reach normal operating speeds with substantially no supplemental power from an auxiliary source.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: November 26, 2013
    Assignee: ConocoPhillips Company
    Inventors: Bobby D. Martinez, John R. Wolflick, Jaleel Valappil
  • Patent number: 8292597
    Abstract: A gear pump comprises a casing having an inlet, an interior, and an outlet. An inlet gear is positioned at the inlet and pressurizes fluid received at the inlet. A drive gear is positioned at the outlet of the casing, the drive gear receiving fluid pressurized by the inlet gear to output pressurized fluid at the outlet. A speed-reduction gear is meshed to the drive gear and connected to the at least one inlet gear, the speed-reduction gear having a greater number of teeth than the drive gear to reduce a rotational speed from the drive gear to the inlet gear, such that the inlet gear has a lower speed that the drive gear. An input shaft is coupled to the drive gear and receives a rotational input to actuate the drive gear.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: October 23, 2012
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Giuseppe Rago
  • Patent number: 8251678
    Abstract: The present invention relates to a dry vacuum pump unit capable of achieving ultimate pressure of about 1 Pa. The vacuum pump unit includes a main pump (15) disposed at an outside-pressure side, and a booster pump (16) disposed at a vacuum side. The booster pump (16) and the main pump (15) are coupled in series. The booster pump (16) has a higher pumping speed than that of the main pump (15). Each of the main pump (15) and the booster pump (16) includes a pair of pump rotors (52a and 52b), a casing (50) having an inlet port and an outlet port, and a pair of magnet rotors (54 and 54) rotatable with the pair of pump rotors.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: August 28, 2012
    Assignee: Ebara Corporation
    Inventors: Takashi Hozumi, Nobuhito Miyashita, Takanori Inada, Kozo Matake, Yoshinori Ojima, Susumu Miyake, Katsuaki Usui
  • Patent number: 8231363
    Abstract: A screw compressor comprising: a low pressure stage compressor body; a high pressure stage compressor body that further compresses a compressed air compressed by the low pressure stage compressor body; pinion gears for example, respectively, provided on, for example, a male rotor of the low pressure stage compressor body and, for example, a male rotor of the high pressure stage compressor body; a motor; a bull gear for example, provided on a rotating shaft of the motor; and an intermediate shaft supported rotatably and provided with a pinion gear, which meshes with the bull gear, and a bull gear, which meshes with the pinion gears. Thereby, it is possible to make the motor relatively low in rotating speed while inhibiting the gears from being increased in diameter, thus enabling achieving reduction in cost.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: July 31, 2012
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Hitoshi Nishimura, Tomoo Suzuki, Hiroshi Ohta
  • Patent number: 8221094
    Abstract: A screw compressor comprising: a low pressure stage compressor body; a high pressure stage compressor body that further compresses a compressed air compressed by the low pressure stage compressor body; pinion gears for example, respectively, provided on, for example, a male rotor of the low pressure stage compressor body and, for example, a male rotor of the high pressure stage compressor body; a motor; a bull gear for example, provided on a rotating shaft of the motor; and an intermediate shaft supported rotatably and provided with a pinion gear, which meshes with the bull gear, and a bull gear, which meshes with the pinion gears. Thereby, it is possible to make the motor relatively low in rotating speed while inhibiting the gears from being increased in diameter, thus enabling achieving reduction in cost.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: July 17, 2012
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Hitoshi Nishimura, Tomoo Suzuki, Hiroshi Ohta
  • Patent number: 8087901
    Abstract: A fluid channeling device including a channeling body, an axial transfer channel, and a radial outlet channel. The channeling body includes first and second annular body sections spaced axially apart and a tubular body section extending between the first and second body sections. The axial transfer channel is defined axially through the channeling body, and is configured to fluidly couple a first compression assembly with a second compression assembly. The radial outlet channel is defined radially through the channeling body and is configured to fluidly couple the second compression assembly with an outlet.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: January 3, 2012
    Assignee: Dresser-Rand Company
    Inventor: William C. Maier
  • Patent number: 7985056
    Abstract: A fan includes an impeller, a motor, a circuit board, a fan frame and a connecting member. The motor is used to drive the impeller to rotate. The circuit board is electrically connected to the motor. The impeller and the motor are accommodated in the fan frame. The connecting member is disposed at one side of the fan frame. The circuit board is disposed between the connecting member and the fan frame. Also, a fan assembly including such two fans is also disclosed.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: July 26, 2011
    Assignee: Delta Electronics, Inc.
    Inventors: Yi-Fang Chou, Hui-Chun Chang, Chang-Yi Lu, Li-Chen Lin
  • Publication number: 20110052426
    Abstract: An insertion/extraction system and method for a compressor casing and a compressor bundle. The system includes a cradle extending from a first axial end of the compressor casing and configured to provide support for the compressor bundle during insertion, and an extension assembly coupled to a first axial end of the compressor bundle and extending therefrom into the compressor casing during insertion of the compressor bundle into the compressor casing, during extraction of the compressor bundle from the compressor casing, or both. The system further includes a support member that engages the extension assembly and the compressor casing to support the first axial end of the compressor bundle via the extension assembly, the support member configured to allow relative movement between the support member and the extension assembly during insertion of the compressor bundle into the compressor casing, extraction of the compressor bundle from the compressor casing, or both.
    Type: Application
    Filed: August 23, 2010
    Publication date: March 3, 2011
    Applicant: DRESSER-RAND COMPANY
    Inventors: Cyril John Borer, Jeffrey C. Edick, Stephen T. Walker, David Suain
  • Publication number: 20110008186
    Abstract: An integrated high-pressure compression unit for a process fluid that includes at least a first compression device able to compress the process fluid from a essentially gaseous initial thermodynamic state to an intermediate thermodynamic state, a second compression device connected mechanically to the first compression device and able to compress the process fluid from the intermediate thermodynamic state to a final thermodynamic state, a motor device able to drive the first compression device and the second compression device, and a pressure casing or housing in which at least the said first and second compression devices are mechanically coupled to each other.
    Type: Application
    Filed: July 6, 2010
    Publication date: January 13, 2011
    Inventors: Sergio Palomba, Andrea Masi, Marco De Iaco, Massimo Camatti, Lorenzo Bergamini
  • Patent number: 7828530
    Abstract: The invention concerns a dual pump, comprising an electric motor (18) including a drive shaft, the shaft including, at each of its axial ends, a shaft output (21, 22), and two pump impellers, each shaft output driving a respective pump impeller, one first of the pump impellers (23) operating at low pressure and high flow rate, and the second of the pump impellers (30) operating at higher pressure and lower flow rate. The water pumped by the second pump impeller (30) is drawn proximate the outlet of the first pump impeller (23) and returns to the inlet of the second pump impeller. The drawing point is situated in a low pressure pump chamber, upstream of the low pressure outlet (16). The invention is applicable to swimming pool maintenance.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: November 9, 2010
    Assignee: Financiere Piscine Equipement
    Inventor: Joël Queirel
  • Publication number: 20100237620
    Abstract: A turbine unit (11) comprising a passage (23) through which a fluid may pass. Located within the passage (23) is a driving turbine blade set (25) upstream from a pumping turbine blade set (27) wherein the diameter of the pumping turbine blade is larger than the diameter of the driving turbine blade set. The driving turbine blade set and pumping turbine blade set are mounted in opposed relation whereby the turbine blade sets are in reversed orientation with respect to each other such that in simultaneous operation a region between the two turbine blade sets has a lower pressure than the fluid pressure at an opening of the passage. This induces a greater mass flow rate through the turbine unit than would otherwise be created by a pumping turbine blade set equal to or smaller in diameter than the driving turbine blade set.
    Type: Application
    Filed: October 6, 2008
    Publication date: September 23, 2010
    Inventor: Stephen Mark West
  • Publication number: 20100239437
    Abstract: A fluid channeling device including a channeling body, an axial transfer channel, and a radial outlet channel. The channeling body includes first and second annular body sections spaced axially apart and a tubular body section extending between the first and second body sections. The axial transfer channel is defined axially through the channeling body, and is configured to fluidly couple a first compression assembly with a second compression assembly. The radial outlet channel is defined radially through the channeling body and is configured to fluidly couple the second compression assembly with an outlet.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 23, 2010
    Applicant: DRESSER-RAND CO.
    Inventor: William C. Maier
  • Patent number: 7704054
    Abstract: A pump (10) includes a housing, a stator (20) supported in the housing, and a rotor assembly (30). The rotor assembly (30) includes a rotor (32) supported in the housing for rotation relative to the stator (20) about an axis (12). The rotor assembly (30) also includes a first impeller (34) operatively coupled to a first axial end of the rotor (32) for rotation with the rotor about the axis (12). The rotor assembly further includes a second impeller (36) operatively coupled to a second axial end of the rotor (32), opposite the first axial end, for rotation with the rotor about the axis (12). The rotor assembly (30) is movable along the axis (12) relative to the housing to adjust hydraulic performance characteristics of the pump (10).
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: April 27, 2010
    Assignee: The Cleveland Clinic Foundation
    Inventors: David Horvath, Leonard A. R. Golding, Alex Massiello
  • Patent number: 7648337
    Abstract: A multistage pump according to the present invention has a plurality of intermediate casings (2) formed by press-forming a steel plate. The intermediate casing has a cylindrical side portion (21), a stage flat portion (23) with which an axial end face of an adjacent intermediate casing is held in contact, a stage side portion (24) extending axially from the stage flat portion, and a bottom portion (25) extending radially inward from the stage side portion. A relief plate (30) having an outer circumferential end face which is held in contact with an inner surface of a cylindrical side portion of the adjacent intermediate casing is attached to the bottom portion of the intermediate casing. The relief plate, the stage side portion, the stage flat portion, and the inner surface of the cylindrical side portion of the adjacent intermediate casing form a space in which an O-ring (40) is fitted.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: January 19, 2010
    Assignee: Ebara Corporation
    Inventors: Sou Kuroiwa, Kenichi Kajiwara, Shoji Ito, Kikuichi Mori, Aki Ishikawa, Tetsutaro Fujiwara
  • Patent number: 7618245
    Abstract: Oil supply grooves (74, 84) are formed respectively in a rotating shaft (70) of a compression mechanism (50) integral with an electric motor (40) and in a rotating shaft (80) of an expansion mechanism (60). The rotating shafts (70, 80) are coupled together by engagement between an engagement convex portion (85) and an engagement concave portion (75) which are formed respectively in shaft ends of the rotating shafts (70, 80). And, a seal groove (S) is formed in the peripheral surface of the engagement convex portion (85) and an O-ring (R) is engaged into the seal groove (S). Hereby, lubrication oil leakage from between the engagement convex portion (85) and the engagement concave portion (75) is prevented.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: November 17, 2009
    Assignee: Daikin Industries, Ltd.
    Inventors: Eiji Kumakura, Masakazu Okamoto, Tetsuya Okamoto
  • Publication number: 20090246022
    Abstract: A fire fighting pump and operation thereof and a fire fighting system and a fire engine, wherein the pump includes a housing, a motor mounted inside the housing and two or more stages of series-connected impeller assemblies. A water inlet is provided on the housing between the motor and the impeller assemblies. The impeller assemblies are mounted on the impeller shaft coaxially and in series with each other. The impeller shaft is fixed on the motor shaft or is coaxial with the latter. The impeller assembly includes a thruster, an impeller, an end cover and a retaining ring on the periphery of the thruster and the impeller, and those four elements are installed in turn. Several first blades are provided in the thruster and several second blades which correspond with the first blades in amount and location are provided in the impeller.
    Type: Application
    Filed: March 14, 2007
    Publication date: October 1, 2009
    Inventor: Zhenyou Huang
  • Publication number: 20090226299
    Abstract: An serial axial fan unit includes a first axial fan arranged to rotate about a central axis, a flow control device connected to the first axial fan along the central axis, and a second axial fan connected to the flow control device along the central axis. The flow control device preferably includes a wind tunnel portion, a base portion, and a plurality of flow control vanes. A flow of air caused by rotation of first blades has a whirl velocity component in substantially the same direction as the rotation direction thereof. This whirl velocity component is converted to a velocity component in a direction parallel or substantially parallel to the central axis by interference of first stationary vanes. The above arrangement provides an improvement in air volume characteristics of a serial axial fan unit including two axial fans arranged in series.
    Type: Application
    Filed: May 20, 2009
    Publication date: September 10, 2009
    Applicant: NIDEC SERVO CORPORATION
    Inventor: Motoi JIN
  • Publication number: 20090223246
    Abstract: A liquid hydrocarbon slug-containing vessel for incorporation into a system integrating a low-pressure separator with a vapor recovery process system, and a method for regulating the temperature of a gas to be compressed by a two stage compressor so as to prevent liquification of the gas and to prevent over-heating of the compressor.
    Type: Application
    Filed: March 6, 2008
    Publication date: September 10, 2009
    Inventors: Rodney T. Heath, Forrest D. Heath, Gary Heath
  • Publication number: 20090087321
    Abstract: A two-stage compression rotary compressor is provided that includes a low-stage compressing section and a high-stage compressing section housed within a cylindrical sealed housing oriented vertically, a low-stage suction pipe that is connected to a suction side of the low-stage compressing section and sucks in a low-pressure refrigerant, a low-stage discharge pipe the is connected to a discharge side of the low-stage compressing section and discharges the refrigerant from the low-stage to outside of the sealed housing, a high-stage suction pipe that is connected to a suction side of the high-stage compressing section and sucks in the refrigerant discharged from the low-stage, a low-pressure connecting pipe that connects the low-stage suction pipe and an accumulator, and guides the refrigerant inside the accumulator to a suction side of a low-stage compressing section, and an intermediate connecting pipe that connects the low-stage discharge pipe and the high-stage suction pipe, wherein an inner diameter of th
    Type: Application
    Filed: September 22, 2008
    Publication date: April 2, 2009
    Inventors: Naoya Morozumi, Kenshi Ueda
  • Publication number: 20090081053
    Abstract: A two-stage rotary compressor includes a sealed cylindrical compressor housing that includes first, second and third communication holes separately arranged sequentially in an axial direction on an outer peripheral wall, an accumulator held on an outer side of the housing, a low-pressure connecting pipe that connects a bottom communication hole of the accumulator and the second communication hole, and an intermediate connecting pipe that connects the first and third communication holes. The second and third communication holes are arranged at nearly the same circumferential direction position of the housing. The accumulator is held at nearly the same circumferential direction position as the second communication hole.
    Type: Application
    Filed: September 22, 2008
    Publication date: March 26, 2009
    Inventors: Kenshi Ueda, Naoya Morozumi
  • Publication number: 20080199326
    Abstract: A two-stage vapor cycle compressor includes a first stage impeller, a second stage impeller situated adjacent to the first stage impeller, an electric motor running on a pair of foil bearings, a thrust disk including two foil bearings and being positioned between the second stage impeller and the electric motor, and a compressor housing enclosing the first and second stage impeller and the electric motor. A refrigerant vapor compressed by the first stage and second stage impeller flows through an internal passageway formed by the compressor housing and cools the foil bearings and the electric motor. The compressor may be a gravity insensitive, small, and lightweight machine that may be easily assembled at low manufacturing costs. The two-stage vapor cycle compressor may be suitable for, but not limited to, applications in vapor compression refrigeration systems, such as air-conditioning systems, for example, in the aircraft and aerospace industries.
    Type: Application
    Filed: February 21, 2007
    Publication date: August 21, 2008
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: MIKE M. MASOUDIPOUR, ALLEN HANSEN, CHRIS SPEIGHTS, PHUNG K. DUONG
  • Patent number: 7409997
    Abstract: A centrifugal pump has impellers for pumping low flow, high viscous materials. The impellers have high exit angles greater than 30 degrees and preferably greater than 50 degrees. The impellers and diffusers have specific geometry that varies with viscosity. The pump has zones of impellers and diffusers with the exit angles and geometry in the zones differing from the other zones. The exit angles decrease and geometry varies in a downstream direction to account for a lower viscosity occurring due to heat being generated in the pump. One design employs small diameter impellers and high rotational speeds.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: August 12, 2008
    Assignee: Baker Hughes Incorporated
    Inventors: Farral D. Gay, Mark C. James, Joseph E. Vandevier
  • Publication number: 20080008602
    Abstract: A rotary liquefied natural gas boil-off compressor has a series of compression stages. A gas passage passes through the series of compression stages. The gas passage extends through and is in heat exchange relationship with cooling means in the form of indirect heat exchangers. Each of the heat exchangers is cooled by LNG supplied from a pipeline. Flow control valves are provided for controlling the flow of LNG to the heat exchangers respectively. The valves are controlled in response to temperature sensors respectively, so as to maintain the inlet temperature of each of the compression stages at a chosen sub-ambient temperature or between chosen sub-ambient temperature limits.
    Type: Application
    Filed: January 13, 2005
    Publication date: January 10, 2008
    Applicant: THE BOC GROUP PLC
    Inventors: Josef Pozivil, Helmut Gerstendoerfer
  • Patent number: 7013669
    Abstract: A gasdynamic arrangement for a multi-stage centrifugal turbomachine, such as a two-stage compressor, comprising two coaxial impellers assembled on a common shaft with axial intake ports and radial peripheral discharge zones, the intake ports of the two impellers preferably pointing away from each other; a cylindrical vessel concentrically housing the impellers and the intake duct; a partition wall between the two impellers having a first and a second group of apertures; a first array of curved ducts conveying the flow from the first impeller discharge zone to the first group of apertures in the partition wall, the flow further passing through a chamber in the vessel to the intake port of the second impeller, and a second array of curved ducts conveying the flow from the second impeller discharge zone to the second group of apertures in the partition wall, the flow further going to the discharge port, the two flows bypassing each other in opposing directions at the partition wall.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: March 21, 2006
    Assignee: I.D.E. Technologies, Ltd.
    Inventors: Avraham Ophir, Henrikh Rojanskiy, Arie Kanievski
  • Patent number: 6907746
    Abstract: A multi-stage compression type rotary compressor, having a driving element and a first and a second rotary compression element that are driven by the driving element in a sealed container, is provided. The refrigerant compressed by the first rotary compression element is discharged into the sealed container, and said discharged refrigerant with an intermediate pressure is then compressed by the second rotary compression element. By cooling the refrigerant absorbed into the second rotary compression element, the rise in the temperature of the refrigerant that is compressed and discharged by the second rotary compression element can be suppressed. And, the supercooling degree of the refrigerant is increases before reaching the expansion valve to improve the cooling ability of the evaporator.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: June 21, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kazuya Sato, Kenzo Matsumoto, Haruhisa Yamasaki, Akifumi Tomiuka, Kazuaki Fujiwara, Kentaro Yamaguchi, Masaji Yamanaka
  • Patent number: 6854517
    Abstract: A centrifugal pump has impellers for pumping low flow, high viscous materials. The impellers have high exit angles greater than 30 degrees and preferably greater than 50 degrees. The impellers and diffusers have specific geometry that varies with viscosity. The pump has zones of impellers and diffusers with the exit angles and geometry in the zones differing from the other zones. The exit angles decrease and geometry varies in a downstream direction to account for a lower viscosity occurring due to heat being generated in the pump. One design employs small diameter impellers and high rotational speeds.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: February 15, 2005
    Assignee: Baker Hughes Incorporated
    Inventors: Farral D. Gay, Mark C. James, Joseph E. Vandevier
  • Patent number: 6786701
    Abstract: A high pressure misting fan (10) configured for injecting a fluid (F) into a generated stream of air to produce a cooling vapor impregnated airstream (V) is disclosed. The fan (10) broadly includes a rotatable propeller (12), a motor (14), a pump (16), and a nozzle assembly (18). The propeller (12) is drivingly connected to the motor (14) and generates the airstream when rotated by the motor (14). The motor (14) is drivingly connected to both the propeller (12) and to the pump (16) so that the motor (14) rotates the propeller (12) and operates the pump (16). In a preferred embodiment, the propeller (12) and the pump (16) are drivingly connected to opposite ends (32,34) of a common drive shaft (30). The pump (16) is fluidly disposed upstream from the nozzle assembly (18) and is operable to pressurize the fluid (F) flowing from the fluid source to the nozzle assembly (18).
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: September 7, 2004
    Assignee: Emerson Electric Co.
    Inventors: Xian Huang, Richard Evers
  • Patent number: 6698929
    Abstract: A turbo compressor is provided which includes a motor having a stator with a rotor which rotates in the inside of the stator. A rotation shaft is press-fitted into the rotor and is integrally rotated with the rotor. A bearing is provided for supporting the rotation shaft of the motor. At least one impeller is attached to the rotation shaft of the motor and rotated therewith. A foil bearing including a plurality of foils is provided. First ends of the foils are respectively fitted into a multitude of engaging grooves defined on a circumferential inner surface of the stator, and second ends of the foils make contact with a circumferential outer surface of the rotor.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: March 2, 2004
    Assignee: LG Electronics Inc.
    Inventors: Moon Chang Choi, Kwang Ha Suh, Young Kwan Kim, Yoo Chol Ji, Dae Sung Wang
  • Patent number: 6450772
    Abstract: A molecular drag vacuum pump configured for pumping a gas stream from an inlet to an outlet, the pump including a high-speed spinning disk having a channel formed in its edge, disposed within a housing. A passageway is formed on the inside of the housing adjacent the disk, and gas comes in contact with surfaces of the spinning disk in successive stages, conformable wipers being disposed adjacent the spinning disk to direct the gas stream to the successive stages. The disk can be powered by an integral motor, comprising permanent magnets associated with the disk and cooperating coils associated with the housing.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: September 17, 2002
    Assignee: Sarcos, LC
    Inventors: Marc Oliver, Stephen C. Jacobsen, David F. Knutti
  • Patent number: 6422838
    Abstract: A two-stage, permanent-magnet, integral disk-motor centrifugal pump, has a housing having first and second suction ports and first and second discharge ports, the first discharge port being connected to the second suction port. A first impeller is rotatably disposed on a shaft between the first suction port and the first discharge port and a second impeller is placed back-to-back with the first impeller and rotatably disposed on a shaft between the second suction port and the second discharge port, each of the first and second impellers having a back shroud with an array of permanent magnets fixed thereto. A first stator and a second stator are interposed between and adjacent to the first and second impellers, respectively, the rotational speed of the impellers being controlled by invertors acting upon the stators. Provisions are also included for extracting motor heat from the pump.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: July 23, 2002
    Assignee: Flowserve Management Company
    Inventor: Donald P. Sloteman
  • Patent number: 6305911
    Abstract: The invention is a two-phase compression device and a process which provides energy to fluids including an essentially liquid fluid and an essentially gaseous fluid or a fluid having a liquid phase and a gas phase, at least one of the fluids or phases being miscible in at least one other of the fluids or phases which allows mixing of the fluids or phases. A device in accordance with the invention includes at least one two-phase compression element having at least one inlet stage and at least one outlet stage, each one of the stages having an impeller and a diffuser, which mixes the essentially liquid fluid and the essentially gaseous fluid or the phases and which provides energy to each of the essentially liquid and gaseous fluids or phases with the mixture provided from the at least one two-phase compression element being a pressurized liquid or essentially a pressurized liquid.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: October 23, 2001
    Assignee: Institut Francais du Petrole
    Inventor: Yves Charron
  • Patent number: 6210126
    Abstract: The invention is a two-phase compression device and a process which provides energy to fluids including an essentially liquid fluid and an essentially gaseous fluid or a fluid having a liquid phase and a gas phase, at least one of the fluids or phases being miscible in at least one other of the fluids or phases which allows mixing of the fluids or phases. A device in accordance with the invention includes at least one two-phase compression element having at least one inlet stage and at least one outlet stage, each one of the stages having an impeller and a diffuser, which mixes the essentially liquid fluid and the essentially gaseous fluid or the phases and which provides energy to each of the essentially liquid and gaseous fluids or phases with the mixture provided from the at least one two-phase compression element being a pressurized liquid or essentially a pressurized liquid.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: April 3, 2001
    Assignee: Institut Francais du Petrole
    Inventor: Yves Charron
  • Patent number: 5704768
    Abstract: A motor pump group has a plurality of centrifugal pumps of the same nominal port diameter including a plurality of impellers having stepwise greater outside diameters for stepwise higher pump heads, and a plurality of respective motors for actuating the pumps. The pump heads are classified into a low head section and a high head section. The low head section is handled by a single-stage impeller, and the high head section is handled by multi-stage impellers. The centrifugal pumps have respective pressed-sheet pump casings. The outside diameters of the impellers are not required to be increased in the high head section, and the outside diameters of the pump casings fall in a relatively small range.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: January 6, 1998
    Assignee: Ebara Corporation
    Inventors: Makoto Kobayashi, Masakazu Yamamoto, Yoshio Miyake