Interrelated Or Common Lubricating Or Cooling Means For Pump And Motor Patents (Class 417/372)
  • Patent number: 10760831
    Abstract: A method of operating a multiple-compressor refrigeration system is provided. This method includes the steps of supplying, via a common supply line, refrigerant gas and oil to a plurality of compressors coupled in series, and attaching an oil flow conduit between adjacent compressors of the plurality of compressors. The oil flow conduit is configured to move oil from a compressor with a relatively higher pressure to a compressor with a relatively lower pressure. The method further includes controlling the pressure for each of the plurality of compressors by regulating a speed at which each of the plurality of compressors operates in order to maintain a pressure differential between the adjacent compressors to facilitate the flow of oil from the compressor with the relatively higher pressure to the compressor with the relatively lower pressure.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: September 1, 2020
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Bruce A. Fraser, Terry Nares
  • Patent number: 10630130
    Abstract: A compressor includes a shaft, a motor portion, and a compressor portion. The motor portion rotates the shaft. The compressor portion compresses refrigerant by rotation of the shaft. The motor portion has an upper insulator, a stator core, and a winding wire. The upper insulator has a plurality of insulator tooth portions. The stator core has a plurality of stator core tooth portions corresponding to the plurality of insulator tooth portions of the upper insulator. The plurality of stator core tooth portions of the stator core are respectively covered with a plurality of teeth of the upper insulator and are respectively wound around thereof by the winding wire. The insulator tooth portion of the upper insulator has a groove through which lubricant oil poured into the compressor portion passes on a stator core contacting surface which is in contact with the stator core tooth portion of the stator core.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: April 21, 2020
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Takashi Suzuki, Tomoki Nishio
  • Patent number: 10578086
    Abstract: A connector (24) and method of connecting a compressor assembly (10) that increases the pressure of a fluid are described. The compressor assembly (10) includes cylinders (12a,b), crank shaft housings (18a,b), and a motor housing (22). The connector (24) is disposed between the cylinders (12a,b) and the crank shaft housing (18a,b) and configured to engage the cylinders (12a,b) such that vibration during operation of the compressor assembly is reduced through the placement of the connector (24) corresponding to a center of gravity of the compressor assembly (10). The connector may also be used by the compressor assembly as a heat sink, inlet, mount, filter, and/or to provide other functions that improve the operation of compressor assembly.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: March 3, 2020
    Assignee: Koninklijke Philips N.V.
    Inventor: Varaprasad Ventrapragada
  • Patent number: 10495109
    Abstract: Provided is a vacuum pump for preventing solidification of gas in a thread groove portion, and a heat insulating spacer used in the vacuum pump. The vacuum pump includes a heat insulating spacer that is interposed between a casing and an outer circumferential stator having a thread groove portion, supports the outer circumferential stator coaxially with a rotor in a rotor radial direction, with keeping a gap between the casing and the outer circumferential stator, and has lower thermal conductivity than the casing and the outer circumferential stator.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: December 3, 2019
    Assignee: Edwards Japan Limited
    Inventors: Yoshiyuki Sakaguchi, Norihiro Kurokawa
  • Patent number: 10480511
    Abstract: Screw compressor with a compression chamber that is formed by a compression housing, in which a pair of meshed helical compressor rotors in the form of a screw are rotatably mounted and with a drive motor that is provided with a motor chamber formed by a motor housing, in which a motor shaft is rotatably mounted. The motor shaft drives at least one of the aforementioned two compressor rotors, where the compression housing and the motor housing are connected directly together to form a compressor housing, where the motor chamber and the compression chamber are not sealed off from one another and where the rotor shafts of the compressor rotors, as well as the motor shaft, extend along axial directions that are oblique or transverse to the horizontal plane.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 19, 2019
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventor: Andries Jan F. Desiron
  • Patent number: 10374488
    Abstract: In a compressor for refrigerant having a suction inlet for refrigerant and a pressure outlet for compressed refrigerant, said compressor comprising a compression unit and an electric motor driving said compression unit, said electric motor being a synchronous reluctance motor having a stator and a rotor, said rotor comprising a plurality of stacked disc elements, each disc element having a plurality of flux barriers configured to give the rotor core an anisotropic magnetic structure and formed as apertures in said disc element, it is provided that said flux barriers are arranged in said rotor core to define channels enabling a flow of refrigerant through said rotor core, said rotor is provided with a first support element acting on a first front side of said rotor core and a second support element acting on a second front side of said rotor core, said support elements being provided with cut-out sections and said cut-out sections being designed to uncover at least 70% of the cross section of apertures defined
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: August 6, 2019
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventor: Franck Repentin
  • Patent number: 10371134
    Abstract: A sealed compressor comprises a sealed container (101) which accommodates an electric component (105) and a compression component (106); wherein the compression component (106) includes a shaft (110) including a main shaft section (111) and an eccentric shaft section (112), a cylinder block (114), a piston (126), and a main bearing unit (120) mounted to the cylinder block (114) and supporting the main shaft section (112) such that the main shaft section (112) is rotatable, a thrust ball bearing (132) mounted to a thrust surface (130) of the main bearing unit (120); and the thrust ball bearing (132) includes a plurality of balls (134) held in a cage (133), an upper race (135) having main surfaces one of which is in contact with upper portions of the balls (134); and a lower race (136) having main surfaces one of which is in contact with lower portions of the balls (134) and; a restricting means for restricting a displacement of the upper race (135) with respect to the shaft (110).
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: August 6, 2019
    Assignee: PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
    Inventors: Kousuke Tsuboi, Kiwamu Watanabe, Akihiko Kubota, Hironari Akashi, Terumasa Ide
  • Patent number: 10072661
    Abstract: A rotatory compressor and a refrigerating cycle device are provided. The rotatory compressor includes a lubricating oil in an interior of a hermetically sealed housing, and an electric motor and a rotatory compressing mechanism disposed in the housing. An internal pressure of the housing is substantially equal to a suction pressure of the compressing mechanism. The compressing mechanism includes a first bearing and a second bearing at least one of which includes an exhaust muffler. A refrigerant of the exhaust muffler flows through the sliding vane chamber and is discharged from an exhaust pipe of the compressing mechanism.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: September 11, 2018
    Assignee: GUANGDONG MEIZHI COMPRESSOR CO., LTD.
    Inventors: Masao Ozu, Weimin Xiang, Jijiang Yu, Hong Guo, Jingtao Yang, Cheng Zhang, Bin Gao, Ling Wang
  • Patent number: 9989046
    Abstract: A roundel structure for a five-compressing-chamber diaphragm pump includes a cylindrical or inverted frustoconical eccentric roundel in an eccentric roundel mount. The cylindrical or inverted frustoconical eccentric roundel includes an annular positioning groove or indentation, a vertical or inverted frustoconical flank and a sloped top ring extending from the annular positioning groove or indentation to the flank. The sloped top ring eliminates the oblique high frequency pull and squeezing phenomena that occurs in a conventional tubular eccentric roundel arrangement.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: June 5, 2018
    Inventors: Ying Lin Cai, Chao Fou Hsu
  • Patent number: 9976447
    Abstract: A turbine inlet housing has a main housing body extending about a central axis. An inlet duct delivers air into a cavity within the main housing body. Bolt hole bosses are formed on a downstream face of the inlet housing to receive bolts to secure an outlet housing to the inlet housing. A plurality of the bosses have a ramped surface which extends radially outwardly for a greater extent than a second plurality of bosses. The plurality of ramped bosses extend between the downstream face and the duct. The ramped bosses have a forward boss portion, and a ramped surface at an angle of between 50 and 54 degrees extending from an upstream end of the forward boss portion. A curved surface curves from an upstream end of the ramped surface to merge into the duct. A turbine stage and air cycle machine are also disclosed and claimed.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 22, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Eric Chrabascz, Brent J. Merritt
  • Patent number: 9932978
    Abstract: In a method for controlling the operation of a compressor, the compressor is switched off by a controller in order to prevent thermal damage if an estimated temperature value calculated by the controller exceeds an upper threshold value. The controller calculates a cooling function as a state variable utilizing the estimated temperature value, the cooling function representing the chronological course of the cooling of the compressor. The controller determines the cooling function based on at least one first and one second estimated temperature value which are associated with points of the compressor that are at spatial distances to each other. The calculation of the cooling function is based on a temperature difference between the first and second estimated temperature values.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: April 3, 2018
    Assignee: Continental Teves AG & Co. OHG
    Inventor: Marek Engelhardt
  • Patent number: 9714589
    Abstract: The present invention refers to a crankshaft (1) for an alternative compressor comprising a main shaft (21) connected to an eccentric pin (2) by means of a peripheral flange (3) containing a lubricating hole (24) extending through said eccentric pin (2) and through at least part of the body of main shaft (21), one of the edges of said hole (24) being on the cylindrical surface (2a) of said eccentric pin (2). With this type of hole, the present invention allows for the use of shafts having extremely low diameters (and, as result, with low viscous loss), even with high eccentricities, whereby an excellent capacity of oil pumping and mechanical strength is maintained.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: July 25, 2017
    Assignee: Whirlpool S.A.
    Inventors: Adilson Luiz Manke, Laerte Capestrini
  • Patent number: 9447725
    Abstract: A compressor includes: a cylinder; a crankcase; a piston arranged within the cylinder and the crankcase; and an outer rotor type motor causing the piston to reciprocate, wherein the outer rotor type motor comprises: a stator; a coil wound around the stator; a rotational shaft; a yoke connected with the rotational shaft; and a permanent magnet secured to the yoke, and the yoke is formed with an air hole.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: September 20, 2016
    Assignee: SHINANO KENSHI CO., LTD.
    Inventors: Eiji Okada, Kazuhiro Ueda
  • Patent number: 9312736
    Abstract: An electric machine has in a machine housing, a stator and a rotor which is arranged on a motor shaft which is supported on a non-drive side in a bearing unit which has a ball bearing arrangement and is arranged within the machine housing in a radially elastic and axially displaceable manner. The electric machine is preferably coupled on the drive side without a bearing via a rigid shaft coupling to a work machine, in particular to a hydraulic pump.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: April 12, 2016
    Assignee: Baumueller Nuernberg GmbH
    Inventors: Frank Gutjahr, Peter Lemke
  • Patent number: 9261104
    Abstract: A fluid compression system includes a compressor, an electric motor including a stator and a rotor positioned adjacent to the stator, and a shaft coupled to the rotor to support the rotor for rotation and having a drive end and a non-drive end. A plurality of flow-inducing elements are integrally-formed as part of the shaft and is adapted to induce a flow of fluid from the non-drive end toward the drive end in response to rotation of the shaft.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: February 16, 2016
    Assignee: Ingersoll-Rand Company
    Inventor: Darrell A. Stock
  • Patent number: 9234519
    Abstract: A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: January 12, 2016
    Assignee: Oerlikon Leybold Vacuum GmbH
    Inventors: Thomas Dreifert, Wolfgang Giebmanns, Robert Jenkins, Roland Müller
  • Patent number: 9225221
    Abstract: A stator housing assembly (3) for a pump (2) having a wet-running electric motor (8) includes a stator housing (4) and a can (6), wherein the stator housing (4) and the can (6) are designed as a single component (3). The stator housing assembly (3) also includes at least one engagement element (310) for positively connecting to a pump housing (14).
    Type: Grant
    Filed: February 28, 2009
    Date of Patent: December 29, 2015
    Assignee: Grundfos Management a/s
    Inventors: Steen Mikkelsen, Brian Lundsted Poulsen
  • Patent number: 9217434
    Abstract: A compressor may include a shell, a compression mechanism supported within the shell, a drive shaft engaged with the compression mechanism and a motor. The drive shaft may define first and second passages extending axially within the drive shaft and a third passage extending radially through an outer circumferential surface of the drive shaft and in communication with the second passage. The drive shaft may define an axially extending wall separating the first and second passages. The motor may include a rotor fixed to the drive shaft and a stator supported within the shell. The third passage may be adapted to provide oil to the stator during compressor operation to cool the stator.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: December 22, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: YanChun Han, Ruimin Zheng, Michael M. Perevozchikov, Roy J. Doepker
  • Patent number: 9181855
    Abstract: A turbocharger is disclosed for use with an engine. The turbocharger may include a housing at least partially defining a compressor shroud and a turbine shroud. The turbine shroud may form a volute having an inlet configured to receive exhaust from an exhaust manifold of the engine in a tangential direction. The volute may also include an axial channel disposed downstream of the inlet. The turbocharger may also include a turbine wheel disposed within the turbine shroud that may be configured to receive exhaust from the axial channel. The turbocharger may also include a compressor wheel disposed within the compressor shroud, and a shaft connecting the turbine wheel to the compressor wheel. The turbocharger may also include a nozzle ring disposed within the axial channel at a location upstream of the turbine wheel.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: November 10, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventors: Gary Robert Svihla, Joshua Schueler, Shakeel Nasir, Keith Moravec
  • Patent number: 9157437
    Abstract: A rotary compressor includes an oiling mechanism that contains a vertical fitting hole formed on a countershaft portion in the lower part of the rotating shaft, and an oil pipe having an inlet port at the lower end and an opening at the upper end. The upper part of the oil pipe is press-fitted into the vertical fitting hole. The oiling mechanism further contains a pump vane having a vane portion and a base portion. The vane portion is twisting processed and inserted into the vertical oil hole to provide a space. The base portion is fixed into the lower part of the oil pipe that has an inner diameter smaller than the width thereof.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: October 13, 2015
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Shingo Yahaba, Naoya Morozumi
  • Publication number: 20150147203
    Abstract: A compressor may include a hermetic case to store oil in a lower portion thereof, a compression mechanism part to compress a refrigerant, a power train part to generate a driving force, a rotational shaft to transmit the driving force generated from the power train part to the compression mechanism part and including a hollow portion and a female screw part formed at the hollow portion, and an oil pumping member inserted into the hollow portion of the rotational shaft and including an oil pumping part which moves the oil stored in the lower portion of the hermetic case up and a male screw part which is coupled to the female screw part of the rotational shaft. Since the oil pumping member and the rotational shaft are firmly coupled to each other, the reliability of the oil supplying is improved.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 28, 2015
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Jung Hyoun KIM
  • Patent number: 8978826
    Abstract: Disclosed is a compressor capable of having an enhanced performance by sufficiently supplying oil to components where sliding occurs not only in a high speed driving mode but also in a low speed driving mode. The compressor may increase an oil supply amount in a low speed driving mode, but may restrict an oil supply amount when a rotation speed of a driving motor reaches a predetermined speed in a constant or high speed driving mode, by setting the number of turns of an external groove to be approximately 1.75, and by forming an oil feeder in a conical shape.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: March 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jinkook Kim, Kyeongho Kim, Woong Cho, Kyoungjun Park
  • Publication number: 20150064030
    Abstract: A fluid pressure drive unit is to supply a working fluid to and drive a fluid pressure actuator. The fluid pressure drive unit includes a fluid pressure pump for suctioning and discharging the working fluid, an electric motor for driving and rotating the fluid pressure pump, a power transmission mechanism for transmitting a power between a rotation shaft of the fluid pressure pump and a rotation shaft of the electric motor, and a circulation mechanism to be driven by the power transmitted by the power transmission mechanism, the circulation mechanism for guiding a lubricating fluid in the power transmission mechanism and cooling the electric motor.
    Type: Application
    Filed: March 22, 2013
    Publication date: March 5, 2015
    Applicant: KAYABA INDUSTRY CO., LTD.
    Inventors: Kazunari Suzuki, Shinji Yakabe
  • Publication number: 20150023818
    Abstract: An air compression system includes an air compression device and a cooling structure. The air compression device includes a liquid-cooled motor and a compressor. The cooling includes a radiator, a cooler, a first liquid conveying tube, a second liquid conveying tube, a third liquid conveying tube, a fourth liquid conveying tube and a cooling liquid. The radiator interconnects the compressor for cooling a lubricating liquid in the compressor; the first liquid conveying tube interconnects the radiator and the cooler; the second liquid conveying tube interconnects the radiator and the cooler; the third liquid conveying tube interconnects the liquid-cooled motor and the cooler; the fourth liquid conveying tube interconnects the liquid-cooled motor and the cooler; and the cooling liquid is filled into the cooler, so as to reduce the space occupied by the cooling structure.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 22, 2015
    Inventors: Feng-Yung LIN, Chih-Chung CHEN, Li-Yung YAN
  • Publication number: 20140363319
    Abstract: A rotary vane vacuum pump includes a pump casing having a gas inlet port and a gas outlet port, a stator provided within the pump casing and defining a cylindrical stator chamber and a cylindrical rotor eccentrically arranged in the stator chamber and equipped with radially movable radial vanes, the vanes cooperating with the inner wall of the stator chamber for pumping a gas from the gas inlet port to the gas outlet port, the pump casing being filled with such an amount of oil that the stator is immersed in an oil bath acting as cooling and lubricating fluid, wherein a motor for driving the pump is further provided, the motor being arranged in a motor casing that is in fluid communication with the pump casing, whereby the motor is immersed in the oil bath.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 11, 2014
    Inventors: Elisabetta Carboneri, Gianfranco Cappuzzo, Guiseppe De Palma, Roberto Carboberi
  • Patent number: 8864480
    Abstract: An oil recovery member, a motor mechanism, and a compressor using the same are provided. The oil recovery member is provided to prevent oil rising along a rotational shaft from being discharged with refrigerant, and relative sizes, such as installation positions between the oil recovery member and components adjacent thereto, are restricted. As the oil flow is guided through a passage defined between the oil recovery member and the adjacent components, the oil may be efficiently recovered, so that, an oil circulation rate of a freezing cycle may be reduced and compression efficiency improved.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: October 21, 2014
    Assignee: LG Electronics Inc.
    Inventors: Hae-Ok Jung, Jae-Yeol Lee, Yong-Beom Yeom
  • Patent number: 8858198
    Abstract: A hydrostatic apparatus is disclosed. The hydrostatic apparatus comprises a pump, an input shaft, a fan and a fan shroud. The pump comprises a housing, an end cap, a first end and a second end. The input shaft extending from the first end and the second end of the pump. The fan is attached to one end of the input shaft. The fan shroud is also attached to the pump.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: October 14, 2014
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Thomas Kopel, Thomas A. Roth, Thomas P. Gavin, B. Keith Harshman, Bryce E. Steenburg, Raymond Hauser, Lonnie E. Holder
  • Publication number: 20140294623
    Abstract: The main sources of heat in a scroll pump are cooled efficiently by a single cooling fan so that noise and, in particular, fan-generated noise, can be kept low. The scroll pump includes a pump head assembly, a pump motor, a cooling fan that produces a cooling air flow in the pump, a cowling in which the pump head assembly, pump motor and cooling fan are housed and juxtaposed with one another in an axial direction of the pump, and a shroud disposed within the cowling and extending around the pump motor to define a tunnel with the motor and through which the air flow of the cooling fan is directed.
    Type: Application
    Filed: March 29, 2013
    Publication date: October 2, 2014
    Applicant: AGILENT TECHNOLOGIES, INC.
    Inventors: Ronald J. FORNI, Scott DRISCOLL, George GALICA
  • Patent number: 8827662
    Abstract: The refrigeration compressor includes a cylinder block carrying a crankshaft and a stator of an electric motor, whose rotor is mounted to the crankshaft. An oil pump including; a tubular sleeve affixed to the crankshaft or to the rotor with a pump body internal to the tubular sleeve and connected to the cylinder block. A fixation rod is articulated to the cylinder block or stator and has a lower portion angularly and freely displaced orthogonally to the rotational axis and around which the lower end portion of the pump body is axially retained and slidably mounted, orthogonally and coplanar to the rotation axis of the rotor.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: September 9, 2014
    Assignee: Whirlpool S.A.
    Inventors: Emilio Rodrigues Hulse, Luiz Fabiano Jovita, Andrea Lopes
  • Publication number: 20140248166
    Abstract: A vacuum pump has at least one side passage pump stage which comprises a side passage bounded by at least one stator element and having a coolant circuit for cooling the vacuum pump with a coolant, wherein the coolant circuit has at least one coolant passage for the side passage pump stage which is bounded at least regionally by the stator element.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 4, 2014
    Applicant: Pfeiffer Vacuum GmbH
    Inventors: Aleksandr Shirinov, Wolfgang Soehngen, Torsten Gogol, Sebastian Oberbeck
  • Patent number: 8801398
    Abstract: A turbocompressor assembly is provided, which is divided along a rotor axis into at least three sections. The three sections include a bearing section having an active magnetic bearing, a motor section including a motor having a stator arranged along the rotor axis, the stator enclosing a circumferential motor gap formed between the stator and the rotor, and a compressor section having a compressor for compressing a cooling fluid. A gas-tight housing encloses the rotor, the bearing section, the motor section and the compressor section. A cooling system is provided having an inlet for supplying the pressurized cooling fluid to the bearing section and the motor section through a fluid channel positioned between the bearing section and the motor section. The cooling system includes a throttling device positioned adjacent to the motor gap for limiting the flow of cooling fluid from the fluid channel to the motor gap.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: August 12, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Gerard Korenblik
  • Patent number: 8801397
    Abstract: A compressor (100) includes a closed casing (101), a compression mechanism (120), a motor (130) and an oil separating member (17A). The oil separating member (17A) rotates together with a shaft (140). The oil separating member (17A) has a peripheral wall (173) and a bottom wall (175) that form a recess (171). An inlet of a discharge pipe (160) penetrating the closed casing (101) is located in the recess (171). A plurality of oil expelling ports (174) are provided in the peripheral wall (173) of the oil separating member (17A) so as to be scattered.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: August 12, 2014
    Assignee: Panasonic Corporation
    Inventors: Atsuo Okaichi, Fuminori Sakima, Osamu Ogawa
  • Publication number: 20140140868
    Abstract: A compressor may include a shell, a compression mechanism, a motor, a pumping mechanism, and a heat exchanger. The shell may define an internal cavity and an oil sump. The compression mechanism is disposed the said shell. The motor is coupled to a driveshaft for selectively powering the compression mechanism. The pumping mechanism may be in fluid-pumping communication with the oil sump. The first heat exchanger may be disposed external from the shell and in fluid communication with the pumping mechanism. The first heat exchanger may cool the oil prior to returning the cooled oil to the internal cavity.
    Type: Application
    Filed: October 25, 2013
    Publication date: May 22, 2014
    Applicant: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. IGNATIEV, Ronald E. BONEAR, Robert C. STOVER
  • Patent number: 8727748
    Abstract: A high-pressure cleaning device has a housing which surrounds a motor pump unit which comprises a liquid-cooled electric motor and a pump. The pump has a suction inlet and a pressure outlet. Liquid, which is subsequently subjected to pressure by the pump, can be supplied to the electric motor for the purpose of cooling it. The electric motor is configured as a fan-less asynchronous motor and the motor pump unit is mounted via vibration-damping buffer elements.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: May 20, 2014
    Assignee: Alfred Kaercher GmbH & Co. KG
    Inventors: Bertram Groeger, Walter Schiffhauer, Lanfranco Pol
  • Publication number: 20140127035
    Abstract: Disclosed herein is a propulsion apparatus for ships. The propulsion apparatus, which includes a front propeller and a rear propeller to rotate in opposite directions and provides propulsion power to propel a hull of a ship, includes a power unit to supply power to rotate the rear propeller, a main shaft to transfer the power supplied from the power unit to the rear propeller, a hollow shaft extending in a longitudinal direction of the main shaft to allow the main shaft to pass therethrough and coupled to the front propeller, a drive motor including a rotor coupled to an outer circumferential surface of the hollow shaft and a stator supported by the hull, the drive motor rotating the hollow shaft in a direction opposite to a direction of rotation of the main shaft, and an electricity supply unit to supply electricity to the drive motor.
    Type: Application
    Filed: September 23, 2011
    Publication date: May 8, 2014
    Applicant: SAMSUNG HEAVY IND. CO., LTD.
    Inventors: Tae Goo Lee, Hyung Gil Park, Kwang Jun Paik, Dong Hyun Lee, Jin Suk Lee, Tetsuji Hoshino
  • Publication number: 20140112803
    Abstract: Pump system (2), method and use for transporting injection water (10) to an underwater injection well (12), wherein the pump system (2) comprises a pressure-tight enclosure (14) located underwater and containing: —a pump arrangement (18) for pumping the injection water (10); —a drive arrangement (20) connected to the pump arrangement (18) for operation of the latter; —a cooling arrangement (46) for removing heat from the interior of the enclosure (14); and —at least one control unit (48) for operating control of at least said drive arrangement (20); wherein the enclosure (14) also comprises: —an inlet (24), which is flow-connected to an upstream side of the pump arrangement (18); and —an outlet (28), which is flow-connected to a downstream side of the pump arrangement (18).
    Type: Application
    Filed: April 18, 2012
    Publication date: April 24, 2014
    Inventor: Jan Olav Hallset
  • Publication number: 20140105765
    Abstract: The present invention regards a compressor system comprising a compressor unit (1) and a motor unit (2) arranged on bearings (4, 5, 6), where motor and bearings are submerged in a cooling, lubricating and barrier liquid enclosed in a housing (7) having a cooling arrangement and a circulation arrangement, wherein the motor unit (2) is a permanent magnet motor unit.
    Type: Application
    Filed: May 31, 2012
    Publication date: April 17, 2014
    Applicant: FMC Kongsberg Subsea AS
    Inventor: Leif Arne Tønnessen
  • Patent number: 8678784
    Abstract: A drive device in which a driving force transfer mechanism is accommodated in a case that includes a main body portion having an opening portion and a cover portion attached to the opening portion, and the cover portion is provided with an oil pump. The drive device is configured with a pump cover attached to a case inner surface of the cover portion, which forms an inner surface of the case, such that the pump cover is accommodated in a case internal space surrounded by the main body portion and the cover portion. A pump chamber of the oil pump is formed by a recess that is formed in at least one of a mating surface of the cover portion and a mating surface of the pump cover in a bonding portion between the cover portion and the pump cover.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: March 25, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Tomoo Atarashi, Natsuki Sada, Takuya Komatsu, Yutaka Ozeki
  • Publication number: 20140056726
    Abstract: In an electric machine, there may be lubrication and cooling needs, such as lubricating bearings and cooling coils of the electric machine. When lubricant is used for both, it is desirable to prioritize the lubrication to the bearings. By providing check valves between a pressurized oil manifold and the cooling coils, lubricant is diverted to the coils only when pressure in the system is sufficient to satisfy both lubrication and cooling. In some embodiments, an oil gallery is provided on an outside surface of a back iron of the stator of the electric machine and orifices are provided in the back iron so that oil drips onto the coils of the electric motor. In some embodiments, the current commanded to the electric motor is based on whether or not lubricant (or other coolant) is being provided to the coils.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 27, 2014
    Applicant: EcoMotors, Inc.
    Inventors: Tyler Garrard, Will Robert Nielsen Hippen, Christopher Meszaros, Diana Brehob
  • Publication number: 20140044572
    Abstract: A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing 3 by a main frame 21, the driving shaft 15 is connected to a rotor 39 of the driving motor 13 and supported in the casing 3 by a bearing plate 8, a pickup 45 is connected to an oil supply path 41 extending in an up-and-down direction in the driving shaft 15, and intercommunication paths 38B, 54A through which lubrication oil scraped up by the pickup 45 and supplied to respective lubrication sites is returned to the lower side of the driving motor 13 are provided between the stator 37 and the spacer ring 38 or between the spacer ring 38 and the casing 3.
    Type: Application
    Filed: December 20, 2011
    Publication date: February 13, 2014
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Satoshi Iitsuka, Tsutomu Kon, Akihiro Hayashi, Katsuki Akuzawa, Kenji Aida, Kazuyoshi Sugimoto, Yasunori Kiyokawa, Yoshihiko Nagase, Yoshiaki Nagasawa
  • 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: 8608458
    Abstract: A pump assembly includes a pump housing (2) with a fluid entry (6) and a fluid exit (8) for a fluid to be delivered. A stator housing (4) is connected to the pump housing (2). At least one cooling channel (12) is formed in a wall of the stator housing (4) and is connected to cooling channels (22, 24) in the pump housing (2), which are in connection with the fluid entry (6) and the fluid exit (8), so that the fluid flows through the at least one cooling channel on account of the pressure difference between the fluid entry (6) and the fluid exit (8).
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: December 17, 2013
    Assignee: Grundfos Management a/s
    Inventors: Jens Solvstrom Jensen, Kim Hulegaard Jensen, Steen Mikkelsen
  • Patent number: 8602094
    Abstract: A method facilitates transmission of electric signals across well components which move relative to each other in a wellbore environment. The method utilizes well components which are movably, e.g. rotatably, coupled to each other via one or more conductive bearings. Each conductive bearing has a conductive rolling element which enables relative movement, e.g. rotation, between the well components while simultaneously facilitating transmission of electric signals through the bearing. The method also involves coupling portions of the bearing to each of the well components, and those bearing portions may be connected with electric leads to enable flow of electric signals through the bearing during operation of the system downhole.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: December 10, 2013
    Assignee: Schlumberger Technology Corporation
    Inventor: Joachim Sihler
  • Patent number: 8579601
    Abstract: The multistage dry vacuum pump is disclosed, in which it is possible to prevent a pump from being adhesively stuck, which problem occurs due to a difference in thermal expansions between a cylinder body and a rotor, by making thermal expansion conditions between a cylinder body and a rotor of a pump similar by concurrently cooling the cylinder body and the rotor of the pump. The gas passage for transferring gas compressed by each cylinder is provided at each cylinder body in a shape of surrounding an outer side of each cylinder, and a cooling water jacket for circulating cooling water is provided close to an outer side of the gas passage, and a communication passage is formed at a gas passage contacting with the cooling water jacket and is connected with an exhaust space of the cylinder.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: November 12, 2013
    Inventor: David Kim
  • Publication number: 20130251556
    Abstract: A power system arrangement is disclosed. The power system arrangement may include a power source configured to delivery energy, a power load configured to receive energy from the power source, a lubrication system configured to deliver lubrication fluid through the power system, wherein the lubrication system may include a tank for storing lubrication fluid, and a support structure configured to support the power source, the power load, and the tank. The power source, the power load, and the tank may be coupled to the support structure substantially in series along a longitudinal axis.
    Type: Application
    Filed: March 26, 2012
    Publication date: September 26, 2013
    Inventors: Pedro Ismael DePAZ, Michael D. Leisenring, Mark David Truehart, James Jonathan Underwood, Camilo Alejandro Santisteban, Anthony Minh Dang, Alexander Joseph Lapid, Allen F. Killian
  • Publication number: 20130251555
    Abstract: A power system arrangement is disclosed. The power system arrangement may include a power source, a power load, a power-transfer unit configured to transmit energy from the power source to the power load, a lubrication system configured to deliver lubrication fluid to the power system, wherein the lubrication system may include a first tank for storing lubrication fluid, and a support structure configured to support the power source, the power load, and the first tank. The power source, the power load, and the first tank may be coupled to the support structure substantially in series along a longitudinal axis.
    Type: Application
    Filed: March 26, 2012
    Publication date: September 26, 2013
    Inventors: Pedro Ismael DePAZ, Michael D. Leisenring, Mark David Truehart, James Jonathan Underwood, Camilo Alejandro Santisteban, Anthony Minh Dang, Alexander Joseph Lapid, Allen F. Killian
  • Patent number: 8529217
    Abstract: A method for operating a compressor device and associated compressor device including a compressor chamber and a cooling chamber adjoining the compressor chamber is provided. The pressure of a cooling medium in the cooling chamber is held above the pressure of a compressor medium in the compressor chamber during operation of the compressor device.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: September 10, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ludger Alfes, Wolfgang Zacharias
  • Publication number: 20130224048
    Abstract: A sealing liner for use in a pump motor incorporates a radially enlarged portion at one end, and a radially smaller portion extending from the one end to an opposed end. A length of the overall sealing liner including the radially smaller portion and the radially enlarged portion is defined as a first length. A length of said radially enlarged portion is defined as a second length. A ratio of the first length to the second length is between about 6.5 and about 8.5. A stator assembly, a pump and a method are also disclosed.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 29, 2013
    Inventors: Philip Gillingwater, Aaron M. Finke
  • Publication number: 20130189132
    Abstract: A compressor includes: a cylinder; a piston arranged within the cylinder; an outer rotor type motor causing the piston to reciprocate within the cylinder; and a fan fixed to a rotor of an outer rotor type motor and facing at least a part of the cylinder.
    Type: Application
    Filed: November 19, 2012
    Publication date: July 25, 2013
    Applicant: SHINANO KENSHI CO., LTD.
    Inventor: SHINANO KENSHI CO., LTD.
  • Patent number: 8469679
    Abstract: An object of the present invention is to promote oil separation in a sealed container, thereby decreasing the amount of oil discharged to the outside of a compressor. The compressor comprises discharge hole provided at position facing the end surface of a rotor and through which a compressed refrigerant from first and second rotary compression elements is discharged into the sealed container; and a refrigerant flow path which is extended from a space surrounded with a coil end of a stator projecting from the end surface of the rotor to a rotary compression mechanism side to a space of an air gap between the rotor and the stator, to guide the compressed refrigerant discharged through the discharge hole to an electromotive element opposite to the rotary compression mechanism side.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: June 25, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Hirotsugu Ogasawara, Takahiro Nishikawa, Yoshihisa Kogure, Kazuhiko Arai, Hiroyuki Yoshida