Motor Rotor Intermediate Coaxial Pump Rotors Patents (Class 417/350)
  • Patent number: 10716408
    Abstract: A housing of the air pump has a first air inlet, an air inlet passage, an inflation inlet, an air outlet passage and an air outlet. The motor has two output shafts, the first fan is connected with one of the output shafts and located at one end of the air inlet passage, and the second fan is connected with another output shaft and located at one end of the air outlet passage. The second and the first fans are configured to rotate at a same direction, and the inflation inlet is located between the first and the second fans. The first switch unit is adapted to connect or disconnect the first air inlet with the air inlet passage, and the second switch unit is adapted to connect or disconnect the air outlet with the air outlet passage. The air pump has simple structure, convenient control and low cost.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: July 21, 2020
    Assignee: DONGGUAN HONGSHENG METAL & PLASTIC TECHNOLOGY CO., LTD.
    Inventor: Chunhua Yang
  • Patent number: 10239535
    Abstract: The present disclosure relates to an engine control device for hybrid construction machinery, and more particularly, and an object of the present disclosure is to, in a hybrid excavator, in which a swing apparatus is electrically driven by being separated from a hydraulic power train system in the related art, satisfy a minimum rotational speed of an engine auxiliary motor which is necessary to satisfy a target charging amount required for an energy storage device, and improve fuel efficiency by removing unnecessary energy loss at low loads by controlling a rotational speed of an engine to be lower than a rotational speed of an engine determined based on a dial input and a mode input in the related art, in a case where a target power generation amount of the engine auxiliary motor is small in a low-load work situation.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: March 26, 2019
    Assignee: Doosan Infracore Co., Ltd.
    Inventor: Seung Jin Yoo
  • Patent number: 10125791
    Abstract: A centrifugal blower includes a stator housing. The stator housing includes a radial contact surface which makes contact with a casing in a radial direction, a circumferential contact surface which makes contact with the casing in a circumferential direction, and an axial contact surface which makes contact with the casing in an axial direction. With such configuration, it is possible to reduce the vibration of the blower by increasing a contact area between the casing and the stator housing. Further, the stator housing includes a heat dissipating surface. As a result, it is possible to efficiently dissipate the heat, which is generated from the stator, from the heat dissipating surface of the stator housing to the gas existing within the wind tunnel.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: November 13, 2018
    Assignee: NIDEC CORPORATION
    Inventor: Takuya Teramoto
  • Patent number: 9574568
    Abstract: A centrifugal blower apparatus includes a scroll-shaped housing with first and second air inlets which open to a blower chamber that is in fluid communication with an air outlet. The blower includes a motor to drive impellers, wherein the motor is secured to a frame coupled within the housing in a manner to substantially enhance aerodynamic performance of the blower.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: February 21, 2017
    Assignee: Henkel IP & Holding GmbH
    Inventors: Roger Dickinson, John O'Connor
  • Patent number: 9518583
    Abstract: The submerged centrifugal electric pump comprises an external casing (2) comprising a first and a second tubular portion (5, 7) suitable to be connected coaxial to one another, a pumping unit (3) inserted axially in the first portion (5) of the casing (2) to suction a liquid through a suctioning opening (101) and transfer the liquid in outlet through a discharge opening (11), and a motor unit (4) inserted in the second tubular portion (7) of the casing (2) and provided with a motor shaft (15) suitable to be connected in use to the pumping unit (3). The centrifugal electric pump comprises means (19) for fixing the axial position of the motor shaft (15) interposed between the motor unit (4) and the pumping unit (3).
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: December 13, 2016
    Assignee: PEDROLLO S.P.A.
    Inventor: Silvano Pedrollo
  • Patent number: 9352864
    Abstract: An appliance for vacuum packaging and sealing a container, including: a vacuum motor assembly generating suction, a vacuum trough fluidly connected to the vacuum motor assembly, first and second heat sealing elements, and a microprocessor configured to control the vacuum motor assembly and the first and second heating elements in programmable sequences. One programmable sequence may include energizing the vacuum motor assembly to provide suction to the vacuum trough, energizing the first heat sealing element at a first predetermined temperature for a first predetermined time when a first predetermined vacuum level is reached in the vacuum trough, de-energizing the vacuum motor assembly after a third predetermined time has elapsed after the first heat sealing element has been de-energized, delaying a dwell time, and energizing the second heat sealing element at the expiration of the dwell time at a second predetermined temperature for a second predetermined time.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: May 31, 2016
    Assignee: Sunbeam Products, Inc.
    Inventor: Jamal F. Hammad
  • Patent number: 9115720
    Abstract: The present pump devices provide a dual pump using two (or more) electric motors (e.g. brushless DC motors) driving the pumps independently, including integration of hydraulic and electrical components and connectors. The illustrated arrangements include an in-line single shaft version, a parallel separate shaft version, and an inside-outside version. Each configuration includes a housing supporting formation of: shared structural support for the pumps and motors (e.g., bearings, stator, relationship of components), fluid pump and hydraulic system (e.g., fluid passageways, ports connectors) and motor electrical control (e.g., control circuitry and sensory components).
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: August 25, 2015
    Assignee: GHSP, INC.
    Inventors: Ryan David Rosinski, Larry Duane Ridge, Jarvis Kirby, Cathy Ann Stewart, David Michael Mitteer
  • Patent number: 8931304
    Abstract: An example compressor arrangement includes a first compressor portion configured to compress a fluid and a second compressor portion configured to compress the fluid more than the first compressor portion. The compressor arrangement also includes a motor disposed between the first compressor portion and the second compressor portion. The first compressor portion is configured to communicate the fluid to the second compressor portion along a primary flow path. The second compressor portion is configured to divert at least some of the fluid from the primary flow path, communicating the diverted fluid back to the first compressor portion along a secondary flow path.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: January 13, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Craig M. Beers, Christopher McAuliffe
  • Patent number: 8876493
    Abstract: A fan motor includes a pair of fans axially mounted to both sides of a rotary shaft of the motor. The motor includes an inner rotor placed inside a stator wound with windings and an outer rotor placed outside the stator. The motor thus has a dual-rotor structure where the inner rotor and the outer rotor are held such that both the rotors can rotate on the rotary shaft.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: November 4, 2014
    Assignee: Panasonic Corporation
    Inventors: Kiyomi Kawamura, Hu Li, Yuichi Yoshikawa, Hiroshi Murakami, Yasushi Kato
  • Patent number: 8757151
    Abstract: A headgear-mountable respirator (100) including a first intake (106A) and first associated impeller (108A), as well as a second intake (106B) and second associated impeller (108B) located remotely from the first intake and the first impeller. The respirator further includes a device (112) for, in use, rotating at least one of the impellers, and an air delivery arrangement (103A, 103B) for, in use, delivering air drawn from the first and second intakes to a facial region of a user.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: June 24, 2014
    Assignee: JSP Limited
    Inventors: Clive Johnstone, Stephen Hare
  • Patent number: 8740582
    Abstract: For refrigeration units, maintenance machines are required that can receive and compress the refrigerant from the refrigeration unit. Furthermore, a vacuum pump is required, which is connected to the emptied lines and pumps out humidity and air. The maintenance machine according to the invention includes a motor that drives a compressor via a freewheel in one rotational direction. The same motor drives a vacuum pump via a second freewheel in the other rotational direction. The maintenance machine, which can perform two different functions, includes only one single motor. The machine is lightweight, so that it can be carried by the maintenance personnel. Furthermore, it is small and can be produced in a cost-effective manner.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 3, 2014
    Assignee: Inficon GmbH
    Inventor: Gerd H. Rabe
  • Patent number: 8636479
    Abstract: A blower includes a stationary portion including an inlet and an outlet, a rotating portion provided to the stationary portion, and a motor adapted to drive the rotating portion. The inlet and outlet are co-axially aligned. The stationary portion includes a housing, a stator component provided to the housing, and a tube providing an interior surface. The rotating portion includes one or more bearings that are provided along the interior surface of the tube to support a rotor within the tube. In an embodiment, the blower is structured to supply air at positive pressure.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: January 28, 2014
    Assignee: ResMed Motor Technologies Inc
    Inventors: Barton John Kenyon, David B. Sears, Aleksandr Nagorny, Samuel Aziz Mebasser, Peter John Sweeney
  • Patent number: 8636638
    Abstract: A controller for a heart pump, the controller including a processing system for determining movement of an impeller within a cavity in a first axial direction, the cavity including at least one inlet and at least one outlet, and the impeller including vanes for urging fluid from the inlet to the outlet, causing a magnetic bearing to move the impeller in a second axial direction opposite the first axial direction, the magnetic bearing including at least one coil for controlling an axial position of the impeller within the cavity, determining an indicator indicative of the power used by the magnetic bearing and causing the magnetic bearing to control the axial position of the impeller in accordance with the indicator to thereby control a fluid flow between the inlet and the outlet.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: January 28, 2014
    Assignee: BiVACOR Pty Ltd
    Inventor: Daniel Timms
  • Patent number: 8267648
    Abstract: A blower includes an electric motor having a shaft, a housing having a housing inlet and a housing outlet between which is defined a flow path for gas, a first impeller having a plurality of blades adapted to accelerate gas tangentially and to direct it radially outward, and a stationary portion. The stationary portion includes a gas flow path defined between an external wall of the motor and a wall of the stationary portion, a first stationary vane structure located downstream of the first impeller, and a shield constructed and arranged to provide a barrier between the first stationary vane structure and the blades of the first impeller to isolate leading edges of the first stationary vane structure from an impeller blade pressure pulse. The flow path is of sufficient width to allow a flow of gas therethrough without introducing excessive pressure drop.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: September 18, 2012
    Assignee: ResMed Motor Technologies Inc.
    Inventors: Barton John Kenyon, Peter John Sweeney
  • Patent number: 8257058
    Abstract: An electric ventilator (1) comprises a frame (2), a pair of centrifugal fans (3) mounted on the frame (2), an electric motor (4) for driving the fans (3) and axially interposed between the fans (3), and a unit (5) for controlling the speed of the motor (4); the speed control unit (5) comprises a plurality of electrical switching resistors (7) housed in a box-shaped container (8) that can be closed and sealed; the container (8) is mounted on the frame (2) and has the shape of a bridge so as to surround the casing (13) of the motor (4) without touching it.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: September 4, 2012
    Assignee: Spal Automotive S.r.L.
    Inventor: Alessandro Spaggiari
  • Patent number: 8210829
    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: March 10, 2010
    Date of Patent: July 3, 2012
    Assignee: The Cleveland Clinic Foundation
    Inventors: David Horvath, Leonard A. R. Golding, Alex Massiello
  • Publication number: 20120134856
    Abstract: A series-connected motor unit includes a first motor, a second motor and a separation member. The first motor has a first circuit board and the second motor has a second circuit board. The separation member has a first face and a second face opposite to the first face, wherein the first face abuts against the first circuit board and the second face abuts against the second circuit board.
    Type: Application
    Filed: January 14, 2011
    Publication date: May 31, 2012
    Inventors: Zhe-Hao Wu, Cheng-Te Liu
  • Patent number: 8122884
    Abstract: 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: Grant
    Filed: May 24, 2005
    Date of Patent: February 28, 2012
    Assignee: ResMed Limited
    Inventors: Geoffrey Daniel Daly, Alexander Virr, Stephen Anthony Lea, Dion Charles Chewe Martin, Nicholas Jerome Reed, Larry Puckeridge, Timothy Tsun-Fai Fu
  • Patent number: 7785082
    Abstract: A rotating shaft is supported by journal bearings that can support without contacting the rotating shaft itself. Then, one end of both shaft end portions of the rotating shaft has a main impeller installed and the other end is provided with a sub impeller. By utilizing a force being generated by rotation of the main impeller, liquid being pumped (fluid being pumped) is sucked in through a suction port and discharged through a discharge port. On the other hand, by utilizing a force being generated by rotation of the sub impeller, fluid is transported to the journal bearings, thereby having the journal bearings support the rotating shaft.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: August 31, 2010
    Assignee: Mitsubishi Heavy Industries, Ltd
    Inventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Zenichi Yoshida
  • Patent number: 7758320
    Abstract: A two-stage pump having an internal fluid pathway or cycle for providing cooling to various parts in the pump, such as, an electric motor in the pump, and also for lubricating at least one or a plurality of bearings in the pump. The pump utilized hydrodynamic bearings that are adapted or configured to provide various passageways, channels and the like for using the fluid that is being pumped by the pump as lubrication for at least one or a plurality of bearings in the pump.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: July 20, 2010
    Assignee: Tank, Inc.
    Inventors: Hoa Dao Pham, Joseph Howard McCarthy, Jay Timothy Clementz, Philip Stahl
  • 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: 7387502
    Abstract: A pumping apparatus for pumping a liquid from a source to a target including a motor, a first pump driven by the motor, a second pump driven by the motor and a separator in fluid communication with the first and second pump for separating a liquid received from a source into a gaseous component and a liquid component. The separator further diverts the gaseous component to the first pump and the liquid component to the second pump, wherein the first pump pumps the gaseous component back to the source and the second pump pumps the liquid component to a target.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: June 17, 2008
    Assignee: Fluid Metering, Inc.
    Inventors: David Rawlings, Harry E. Pinkerton, III
  • Publication number: 20070253842
    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: Application
    Filed: April 24, 2007
    Publication date: November 1, 2007
    Inventors: David Horvath, Leonard A.R. Golding, Alex Massiello
  • Patent number: 7005765
    Abstract: A liquid-cooled electric motor with a motor shaft, with two bearing plates which are mounted on the end faces of the motor housing and which carry on each side at least one bearing, the motor shaft being mounted rotatably in the bearings, and with at least one rotating hydraulic pump, the drive shaft of which is connected to the motor shaft by way of a coupling and which is driven by the electric motor. The casing of the motor housing receives a cooling liquid, has an at least partially hollow design and forms a casing cavity. At least one connecting duct for the supply of cooling liquid from the casing cavity to the bearings for cooling and lubrication of the bearings is provided in each of the bearing plates and in that said flanged-on hydraulic pump is sealed off in a liquid-tight manner with respect to the bearing plate interiors.
    Type: Grant
    Filed: September 11, 2001
    Date of Patent: February 28, 2006
    Assignee: Elin EBG Motoren GmbH
    Inventors: Rudolf Schulz, Markus Frickh, Ewald Hörz
  • Patent number: 6997686
    Abstract: A two-stage compressor for generating necessary pressure differential for air-conditioning applications with air-cooled, water-cooled and evaporative-cooled condensing systems using low-pressure refrigerant, such as R134a, is provided. A rotating assembly is mounted for rotation in a compressor housing and includes a shaft, a thrust bearing disk associated with the shaft to maintain an axial position of the rotating assembly, a motor rotor mounted on the shaft, and first and second impellers mounted for rotation with the shaft. First and second journal bearings are mounted in the compressor housing to support the shaft and maintain radial positioning of the rotating assembly. Volute housings including a spiral-shaped volute are associated with each of the impellers to collect and further discharge gas compressed by the impellers. Diffusers having air-foil shaped vanes are locate in the volute channels adjacent the discharge outlets of the impellers to aide in the discharge of gas from the impellers.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 14, 2006
    Assignee: R & D Dynamics Corporation
    Inventors: Giridhari L. Agrawal, Niels A. Jorgensen
  • Patent number: 6910483
    Abstract: 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: Grant
    Filed: December 10, 2001
    Date of Patent: June 28, 2005
    Assignee: ResMed Limited
    Inventors: Geoffrey D. Daly, Alexander Virr, Stephen A. Lea, Dion Charles C. Martin, Nicholas J Reed, Larry Puckeridge, Timothy Tsun-Fai Fu
  • Patent number: 6896478
    Abstract: A dual fan blower module of the present invention includes a housing defining a central motor compartment and first and second scroll chambers. The scroll chambers are axially aligned with and located on opposite sides of the motor compartment. A motor is mounted within the motor compartment and has first and second shaft ends extending axially therefrom. The first shaft end extends into the first scroll chamber and the second shaft end extends into the second scroll chamber. A first fan is mounted onto the first shaft end within the first scroll chamber for rotational movement within the first scroll chamber and a second fan is mounted onto the second shaft end within the second scroll chamber for rotational movement within the second scroll chamber. Each of the first and second scroll chambers includes an expansion channel extending axially inward toward the motor.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: May 24, 2005
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Monier B. Botros, Steve M. Kahrs, Eric K. Haupt, Dennis A. Vermette, Gerald B. Chendes, Jr.
  • Patent number: 6881165
    Abstract: A first hydraulic pump and a second hydraulic pump are respectively mounted to both ends of a rotary shaft in an electric motor, whereby it is possible to drive both of the first hydraulic pump and the second hydraulic pump by one electric motor. Since the electric motor is driven and controlled so as to have any higher rotational speed among a rotational speed of the first hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power steering apparatus and a rotational speed of the second hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power train by a hydraulic pump drive controlling portion, it is possible to necessarily and sufficiently secure the working fluids respectively required in the power steering hydraulic control circuit and the power train hydraulic control circuit which are independent from each other, by a little electric power consumption.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: April 19, 2005
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroatsu Endo, Tatsuya Ozeki, Akira Kasamatsu, Nobuyuki Nagashima, Mitsuhiro Umeyama, Hisanori Nomoto, Yuji Iwase, Akira Murakami, Mitsuhiro Nada
  • Patent number: 6860349
    Abstract: A cooling system for a fuel cell and a fuel cell powered vehicle are disclosed. The cooling system and the fuel cell powered vehicle have a primary circulation passage adapted to circulate primary coolant for cooling the fuel cell, and a secondary circulation passage adapted to circulate secondary coolant for cooling a heat generating source including at least an electric vehicle motor. The primary coolant and the secondary coolant are driven by primary and secondary circulation pumps that are circulated by a single common drive motor, with the primary coolant being cooled with the secondary coolant in a common heat exchanger.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: March 1, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Takayuki Ogawa, Mitsuharu Imaseki, Takeshi Ushio, Katsumi Saitou, Mamoru Yoshikawa
  • Patent number: 6860726
    Abstract: A dual drive system for a hydraulic pump and an air boost compressor is provided. Reversible power is transmitted to a shaft connected to clockwise and counterclockwise over-running clutches connected to different vehicle or equipment subsystems. Reversing the drive allows power to be alternately transmitted to one or the other of the subsystems. The invention includes utilizing the dual drive for hydraulic and air conditioning systems for an aircraft, with the provision of an additional drive motor providing constant power to one or more of the subsystems.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: March 1, 2005
    Assignee: The Boeing Company
    Inventors: Howard Carter III, Richard N. Johnson, Michael John Provost, John David Brown
  • Publication number: 20040096339
    Abstract: The present invention provides a high-pressure blower comprising a fan arrangement which includes a fan (82), and a fan housing (83) for conveying working air. An electromotor drives the fan (82) via a motor shaft (72) with means for motor self-ventilation by generating a cooling air stream flowing through the motor by means of a cooling wheel driven by the rotor. A wall section (70) separates the interior space of the fan housing (83) accommodating the fan (82) airtight from the interior space of the blower accommodating the electromotor (2) so that the cooling air stream flowing through the electromotor is separated and independent of the air flow of the working air conveyed to the fan (82).
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Inventors: Bernhard Bamberger, Dieter Best, Birgit Brausch, Martin Buerkert, Erich Fiedler, Helmut Lipp, Friedrich Schaffert, Reinhard Stillger
  • Patent number: 6616421
    Abstract: A centrifugal compressor assembly, especially one having two or more stages, comprises a first compressor casing having. A fluid inlet and a fluid outlet and a first impeller rotatable within the first compressor casing. The assembly further comprises a second compressor casing having a fluid inlet and a fluid outlet and a second impeller rotatable within the second compressor casing. Drive for the compressors is provided by an electric motor, preferably a permanent magnet motor, disposed between the first and second compressor casings and comprising a stator and a rotor rotatable within the stator. A drive shaft is provided, wherein the first impeller, second impeller and the rotor are mounted on the drive shaft and rotatable therewith.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: September 9, 2003
    Assignee: Cooper Cameron Corporation
    Inventors: Gerald K. Mruk, Peter J. Weber, Edward S. Czechowski
  • Publication number: 20030129065
    Abstract: An air compressor, air storage, and high pressure cleaning machine structure comprised of an air compression and air storage mechanism and a high pressure cleaning mechanism that are powered by a single electric motor in an integrated arrangement, wherein the two protruding ends of a main shaft in the electric motor are inserted into a unidirectional bearing, following which they are respectively coupled to the air compression, air storage mechanism and the high pressure cleaning mechanism. The two mechanisms are installed on a foldable two-section wheeled frame and the user controls the electric motor with a toggle switch to selectively deviate the main shaft in the electric motor towards one of the two unidirectional bearings such that said electric motor drives either the air compression and air storage mechanism or the high pressure cleaning mechanism. As such, the two-in-one arrangement effectively reduces space occupancy and facilitates operating convenience.
    Type: Application
    Filed: January 10, 2002
    Publication date: July 10, 2003
    Inventor: Ming-Kuo Hu
  • Patent number: 6511298
    Abstract: An electric motor pump with axial-flow impellers includes an electric motor having an output shaft both end portions of which are connected to axial-flow impeller units, and a pair of pump housings provided on both sides of the motor in the longitudinal direction of the output shaft and including fluid inlet and outlet ports, the pump housings cooperating with the impeller units to suck fluid into the housings through the inlet ports, move the fluid in the longitudinal direction and discharge the fluid from the outlet ports, thrust forces applied to the output shaft by the impeller units are canceled.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: January 28, 2003
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Toshiyasu Takura, Yoshifumi Tanabe
  • Publication number: 20020192089
    Abstract: A multi-stage centrifugal compressor multi-stage centrifugal compressor with an integral high-speed motor for compressing air has a variable speed permanent magnet motor having electronically commutated stator coils surrounding a rotor carrying permanent magnets, wherein there is a gap between the coils and the rotor. The rotor has a magnetic steel rotor shaft rotatably supported at each end by pressurized oil lubricated hydrodynamic bearings. The stator coils have a plurality of stator wires extending longitudinally along the stator and continuing around the ends of the stator to define end turns. The compressor also has a plurality of compressor impellers mounted to turn with the rotor shaft and cooler for cooling the bearings, rotor and stator coils comprising a pump for introducing cooled oil into the bearings, said bearing configured so that oil exiting from the bearings splashes over the supported ends of the shaft and splashes over the end turns of the stator coils.
    Type: Application
    Filed: April 23, 2002
    Publication date: December 19, 2002
    Inventors: M. Raymond Hill, Millovan R. Grbic
  • Patent number: 6471493
    Abstract: The present invention relates to a turbo compressor which is capable of minimizing deformation of construction parts which may occur in welding or after welding and simplifying the manufacture and assembly by forming the outer diameter of a driving shaft so as to be stepped and joining the construction parts with bolts and pins.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: October 29, 2002
    Assignee: LG Electronics Inc.
    Inventors: Moon Chang Choi, Sang Wook Lee, Yoo Choi Ji, Kwang Ha Suh
  • Patent number: 6464471
    Abstract: A high-efficiency motor/pump system (20) for jetted baths/spas includes a pump assembly (22) removably secured to a motor assembly (24). The motor assembly (24) includes a motor (26) having a conventional laminated stator (30), a front housing (32) at the forward end of the motor (26), a rear housing (34) at the back end of the motor (26), and a ventilation plate (36) at the end of the rear housing (34). An armature-mounted internal fan (104) draws ambient air through openings in a ventilation plate (36) and forces the air through annular channels (80) in the rear housing (34) to effect cooling of the motor (26). The motor (26) is of the permanent split-capacitor type to eliminate the centrifugal switch commonly used in capacitor-start induction motors to thereby improve reliability. Additionally, telescoping structures on the forward end of the motor assembly and the rearward end of the pump assembly facilitate self-aligning assembly of the components.
    Type: Grant
    Filed: July 4, 1999
    Date of Patent: October 15, 2002
    Assignee: STA-RITE Industries, Inc.
    Inventors: Cleo D. Mathis, Robert A. Miller, Francesco Bottoni, Giorgio Domenichini, Cesare Bolboni
  • Patent number: 6454543
    Abstract: The present invention relates to a space-saving and weight-saving motor-and-pump assembly which comprises a drive motor and a pump unit driven by the shaft of the said motor. In order to supply in parallel as many media as possible with an assembly of this type, the present invention suggests the additional integration of at least one second pump unit, driven by the motor shaft of the drive motor, into the motor-and-pump assembly.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: September 24, 2002
    Assignee: Continental Teves AG & Co., OHG
    Inventors: Erhard Beck, Hans-Dieter Reinartz, Helmut Steffes, Peter Drott, Jan Hoffmann
  • Patent number: 6450781
    Abstract: A centrifugal compressor assembly includes two centrifugal compressor stages, a diffuser duct, a plurality of collection chambers, inlet and outlet tubing, and a built-in electrical motor between the stages. The centrifugal compressor assembly is used in a refrigerating system. The electrical motor includes a rotor positioned with the compressor stage rotors on one shaft mounted on gasodynamic bearings, with the stator fixed inside the motor housing, forming a cooling skirt. The cooling skirt for the stator is formed by lengthwise slots on the surface of the stator in contact with the housing, with the ends of the slots being connected to annular grooves on the internal surface of the motor housing. Each of the annular grooves is connected to coolant feed and discharge ducts.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: September 17, 2002
    Assignee: Samjin Co., Ltd.
    Inventors: Verechtchagin Mikhail Petrovich, Verechtchagin Maxim Mikhailovich, Kolontchine Victor Semenovich
  • Patent number: 6450780
    Abstract: The invention relates to a method for generating over-pressure gas by means of a kinetic compressor which is coupled to a high-speed electric machine located on the same shaft with the compressor and comprising a rotor whose rotational speed is over 20,000 rpm. The compressor is provided with at least two stages. The shaft of the rotor is mounted on a magnetic and/or gas bearings, and the high-speed electric machine is placed centrally on the shaft with respect to the compressor stage of the compressor. The rotor is mounted on a magnetic bearing at least in the axial direction, and the ends of the rotor are used at least partly as counter surfaces for the axial magnetic bearing.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: September 17, 2002
    Assignee: Sundyne Corporation
    Inventor: Jaakko Larjola
  • Publication number: 20020076336
    Abstract: A centrifugal compressor assembly, especially one having two or more stages, comprises a first compressor casing having. A fluid inlet and a fluid outlet and a first impeller rotatable within the first compressor casing. The assembly further comprises a second compressor casing having a fluid inlet and a fluid outlet and a second impeller rotatable within the second compressor casing. Drive for the compressors is provided by an electric motor, preferably a permanent magnet motor, disposed between the first and second compressor casings and comprising a stator and a rotor rotatable within the stator. A drive shaft is provided, wherein the first impeller, second impeller and the rotor are mounted on the drive shaft and rotatable therewith.
    Type: Application
    Filed: December 15, 2000
    Publication date: June 20, 2002
    Inventors: Gerald K. Mruk, Peter J. Weber, Edward S. Czechowski
  • Patent number: 6390789
    Abstract: A turbocompressor (1) has an outwardly gas-tight housing (6) within which an electric motor (2) and a multistage radial turbocompressor (3) are arranged on a common shaft (13). For journalling the shaft (13), electromagnetic radial bearings (5) are arranged spaced apart in the direction of the shaft. A gas seal (19) surrounding the shaft (13) is arranged between the electric motor (2) and the radial turbocompressor (3) in order to seal off the electric motor (2) with respect to the radial turbocompressor (3). The electric motor (2) has an inner space (9b, 9c) which is connected in a fluid-conducting manner to an outlet opening (6h; 21) which passes through the housing.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: May 21, 2002
    Assignee: Sulzer Turbo AG
    Inventors: Denis Grob, Jean Claude Pradetto, Dominique Dessibourg
  • Publication number: 20020037215
    Abstract: Disclosed is a centrifugal compressor structure including impellers, each of the impellers including a hub coupled to a drive shaft, a plurality of blades provided at a front surface of the hub and adapted to compress an external fluid while forcing the fluid to flow from an upstream end of the hub to a downstream end of the hub, and a plurality of uniformly-shaped pressure attenuating grooves provided at an outer peripheral edge of the hub and adapted to reduce an axial load applied to the impeller. The formation of the pressure attenuating grooves are carried out without any variation in the size and length of each blade serving as important factors for adjusting the fluid compression degree of the impeller, so that thrust bearings adapted to support an axial load are effectively protected, thereby eliminating problems resulting from the thrust bearings.
    Type: Application
    Filed: March 27, 2001
    Publication date: March 28, 2002
    Inventors: Moon-Chang Choi, Sang-Wook Lee, Young-Kwan Kim, Yoo-Chol Ji, Kwang-ha Suh
  • Publication number: 20020037225
    Abstract: The present invention relates to a turbo compressor which is capable of minimizing deformation of construction parts occurred in welding or after welding and simplifying manufacture and assembly by forming the outer diameter of a driving shaft so as to be stepped and combining the construction parts with bolts and pins.
    Type: Application
    Filed: January 23, 2001
    Publication date: March 28, 2002
    Inventors: Moon Chang Choi, Sang Wook Lee, Yoo Choi Ji, Kwang Ha Suh
  • Publication number: 20010012487
    Abstract: An electric motor pump with axial-flow impellers includes an electric motor having an output shaft both end portions of which are connected to axial-flow impeller units, and a pair of pump housings provided on both sides of the motor in the longitudinal direction of the output shaft and including fluid inlet and outlet ports, the pump housings cooperating with the impeller units to suck fluid into the housings through the inlet ports, move the fluid in the longitudinal direction and discharge the fluid from the outlet ports, thrust forces applied to the output shaft by the impeller units are canceled.
    Type: Application
    Filed: January 31, 2001
    Publication date: August 9, 2001
    Applicant: Toshiba Tec Kabushiki Kaisha
    Inventors: Toshiyasu Takura, Yoshifumi Tanabe
  • Patent number: 6193473
    Abstract: A centrifugal compressor assembly, especially one having two or more stages, has a first compressor casing having a fluid inlet and a fluid outlet and a first impeller rotatable within the first compressor casing. A second compressor casing provided having a fluid inlet and a fluid outlet and a second impeller rotatable within the second compressor casing. Drive for the compressors is provided by a switched reluctance motor disposed between the first and second compressor casings and comprising a stator and a rotor rotatable within the stator. A drive shaft is provided, wherein the first impeller, second impeller and the rotor are mounted on the drive shaft and rotatable therewith.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: February 27, 2001
    Assignee: Cooper Turbocompressor, Inc.
    Inventors: Gerald K. Mruk, Peter J. Weber, Forrest G. Landes
  • Patent number: 6174149
    Abstract: A counterweight is attached to a rotating shaft by a slip fit, combined with two axially abutting surfaces to hold the counterweight. The counterweight is preferably held at one face by a ledge formed on the shaft, and at the opposed face by a portion of the motor rotor. Circumferentially spaced abutting surfaces also hold the counterweight to cause the counterweight to rotate with the rotor. The present invention eliminates the need for separately attaching the counterweight to the shaft, and thus reduces both the complexity of assembly, and also the need for precise manufacturing tolerances for the counterweight.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: January 16, 2001
    Assignee: Scroll Technologies
    Inventor: James W. Bush
  • Patent number: 6171076
    Abstract: A hermetic compressor assembly having a housing and a pair of spaced apart main bearings, disposed within the housing, which subdivide the housing into first and second discharge chambers, and a suction chamber. The suction chamber is disposed between the pair of main bearings and first and second compressor mechanisms are disposed, respectively, in the discharge chambers. Each compressor mechanism has an outboard bearing, a cylinder block, which is disposed between the outboard and main bearings and defining a cylindrical cavity, a roller piston in the cylindrical cavity and a vane supported in the cylinder block and rotationally engaging the roller piston. At least one discharge opening is in fluid communication with the respective discharge chamber and a drive motor is disposed in the suction chamber. A drive shaft drivingly connects each roller piston to the motor. A suction port is disposed within at least one of the compressor mechanisms and extends through the respective main bearing.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: January 9, 2001
    Assignee: Tecumseh Products Company
    Inventor: Edwin L. Gannaway
  • Patent number: 6158978
    Abstract: A motor mount adapter is disclosed which allows a blower housing to firmly hold a blower motor having a different size and shape than the blower motor originally designed to fit on the motor mounts and gaskets of the blower housing. The motor mount adapter has an outside surface which is shaped to mate with the surface of the motor mounts of the blower housing. If the motor mount surface has positioning holes, the outside surface of the motor mount adapter has projections which fit within the positioning holes to hold the motor mount firmly in place. The inside surface of the motor mount adapter holds gaskets which separate the blower motor from the motor mount adapter. When assembled, the blower motor of the blower assembly is supported solely by the gaskets on the motor mount adapter.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: December 12, 2000
    Assignee: Cary Products Co., Inc.
    Inventor: Raymond L. Norbury, Jr.
  • Patent number: 6155802
    Abstract: A turbo compressor is disclosed. The compressor includes a hermetically sealed shell, a motor chamber formed at a center portion of the shell, a driving motor installed in the motor chamber, a driving shaft engaged with the driving motor having its one end inserted into a first compression chamber and its other end inserted into a second compression chamber with said first and second compression chambers being formed at both sides of the shell, first and second impellers disposed in the first and second compression chambers in a face-to-face form and rotatably engaged with both ends of the driving shaft, and a gas flow path through which a refrigerant gas is sucked for thereby first compressing the gas in the first compression chamber and discharging to the second compression chamber for thereby implementing a small size compressor, decreasing the number of parts and increasing a compression efficiency.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: December 5, 2000
    Assignee: LG Electronics, Inc.
    Inventors: Moon-Chang Choi, Hyeong-Seok Kim, Sang-Wook Lee