Pump Fluid Flows Serially From Motor Through Pump Patents (Class 417/371)
  • Patent number: 11225967
    Abstract: The scroll compressor (2) comprises a hermetic enclosure (3) comprising an outer shell (4); a compression unit (11) arranged within the hermetic enclosure (3); an electric motor (21) configured to drive the compression unit (11), the electric motor (21) including a rotor (22) and a stator (23); and an inner shell (26) in which the electric motor (21) is arranged. A baffle (34) is arranged inside the inner shell (26) at a stator end winding (25) of the electric motor (21), the baffle (34) comprising deflecting means configured to deflect at least a part of a main refrigerant flow, flowing inside the inner shell (26), towards said stator end winding (25).
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: January 18, 2022
    Assignee: Danfoss Commercial Compressors
    Inventors: Alain Laville, David Genevois, Julien Lavy
  • Patent number: 11022151
    Abstract: A hydraulic device is provided. Working fluid stored in a fluid storage portion is supplied by a fluid supply portion to a power output portion. The fluid supply portion is driven by a brushless motor. A bypass flow path portion can be switched between a first state of supplying the working fluid from the fluid supply portion to the fluid storage portion and a second state of blocking the fluid supply portion from the fluid storage portion. A control to switch the bypass flow path portion from the first state to the second state after the brushless motor is started and a control to switch the bypass flow path portion from the second state to the first state when the brushless motor is stopped is performed. Backflow of the working fluid from the power output portion to the bypass flow path portion is prevented by a backflow prevention valve.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: June 1, 2021
    Assignee: SHIMADZU CORPORATION
    Inventors: Hitomi Iizumi, Kenichi Kanatani, Hiroyuki Nishida
  • Patent number: 10995752
    Abstract: A scroll-type fluid machine is provided with a body unit having a fixed scroll and a turning scroll. Each of the fixed and turning scrolls include a lap formed on an end plate. The scroll-type fluid machine further includes a motor unit having a drive shaft for driving the body unit, rotors, and a stator. Cooling fins are formed on the opposite surfaces of the fixed scroll and the turning scroll from the surfaces of the respective end plates where the laps are formed.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: May 4, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fuminori Kato, Katsushi Hidano, Takanori Emi
  • Patent number: 10914154
    Abstract: A pumping system pumps material or fluid, for example, downhole to perform a stimulation operation. A pumping system may comprise multiple pumps that must be powered-up in a sequence that does not overload a power source. A variable frequency drive may be coupled to a pump via a motor and may adjust the speed of the motor to control the rate of pumping of fluid from the pump. A soft-starter may be coupled to a pump via a motor to provide a constant pumping rate of fluid from the pump. A power-up sequence may be determined that provides power to the variable frequency pump and the soft-starter to power-up the corresponding motors such that the power source is not strained or overloaded. Mixing variable frequency drive driven pumps with pumps driven by a soft-starter may provide an efficient use of available power, conserve space, allow for control over a pumping rate of fluid and reduce costs.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: February 9, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John Carl Reid, Alexander Simon Chretien
  • Patent number: 10815865
    Abstract: A coolant pump for a vehicle includes an impeller mounted at one side of a shaft and configured to pump a coolant, a pulley mounted at the other side of the shaft and configured to receive torque, a pump housing including an inlet into which the coolant inflows and an outlet of which the coolant flows out, a slider disposed to be movable in a longitudinal direction of the shaft so as to selectively block or open the outlet and a driver configured to move the slider, where a passage which supplies the coolant to at least one heat exchange element is formed on the pump housing.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: October 27, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Hyo Jo Lee
  • Patent number: 10753372
    Abstract: The present invention relates to a direct drive type dual turbo blower cooling structure and, more particularly, to a direct drive type dual turbo blower cooling structure in which a plurality of hole portions for cooling a stator and a plurality of hole portions for cooling a coil portion, a bearing housing, and a rotor are formed along the inner diameter of a motor casing; impellers are disposed on both sides thereof, such that a flow rate is doubled; and an air cooling system capable of achieving thermal balance through the plurality of hole portions is implemented at the time of operation of a cooling fan which provides an air cooling system instead of a conventional water cooling system. As such, it is possible to simplify the mechanical structure and reduce manufacturing time and costs because the pump, heat exchanger, water tank, pipes, etc. required for a water cooling system are unnecessary.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: August 25, 2020
    Assignee: TURBOWIN CO., LTD.
    Inventors: Minsoo Kim, Youngkyu Park
  • Patent number: 10655528
    Abstract: A method is provided for operating an internal combustion engine (ICE), typically together with a vehicle. A corresponding ICE and a related computer program product are also provided.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: May 19, 2020
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Per Larsson
  • Patent number: 10465721
    Abstract: A pump having a fluid driver disposed within the interior volume of the pump and to a method of delivering fluid from an inlet of the pump to an outlet of the pump using the fluid driver. The fluid driver includes a variable-speed and/or a variable torque prime mover and a fluid displacement assembly. The pump can be used in a fluid pumping system to provide fluid to an actuator that is operated by the fluid. At least one of a speed and a torque of the pump is controlled so as to adjust at least one of a flow and a pressure in the fluid pumping system to a desired set point, without the aid of another flow control device.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: November 5, 2019
    Assignee: Project Phoenix, LLC
    Inventor: Thomas Afshari
  • Patent number: 10457697
    Abstract: A method of stabilizing imino-functional silane involving adding thereto at least one Brønsted-Lowry base to inhibit, suppress or prevent the addition reactions of the imino-functional silane with itself to form a imino- and amino-functional silane and the subsequent deamination reactions to form conjugated carbon-carbon double bond-containing imino-functional silanes and stabilized imino-functional silanes containing the at least one Brønsted-Lowry base.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: October 29, 2019
    Assignee: Momentive Performance Materials Inc.
    Inventors: Richard W Cruse, Matthew Pinnow
  • Patent number: 10442517
    Abstract: A marine reduction gear makes it possible to reduce the installation space of an electrical rotating machine. A marine reduction gear includes: an input shaft coupled to an output shaft of an engine; an output shaft coupled to a propeller shaft that rotates a screw propeller; a gearbox accommodating an input gear provided on the input shaft and an output gear provided on the output shaft, the gearbox supporting a first bearing that supports the output shaft in a rotatable manner; and an electrical rotating machine including: a central shaft that rotates together with the output shaft; a rotor fixed to the central shaft; and a stator surrounding the rotor. The gearbox supports the stator and a second bearing that supports the central shaft of the electrical rotating machine in a rotatable manner.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: October 15, 2019
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Ryo Miyamae, Shoichi Takahashi, Tatsuya Ohno, Yoshihiko Ozaki, Kenichi Masamoto
  • Patent number: 10426878
    Abstract: A blood pump system for persistently increasing the overall diameter and lumen diameter of peripheral veins and arteries by persistently increasing the speed of blood and the wall shear stress in a peripheral vein or artery for a period of time sufficient to result in a persistent increase in the overall diameter and lumen diameter of the vessel is provided. The blood pump system includes a blood pump, blood conduit(s), a control system with optional sensors, and a power source. The pump system is configured to connect to the vascular system in a patient and pump blood at a desired rate and pulsatility. The pumping of blood is monitored and adjusted, as necessary, to maintain the desired elevated blood speed, wall shear stress, and desired pulsatility in the target vessel to optimize the rate and extent of persistent increase in the overall diameter and lumen diameter of the target vessel.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: October 1, 2019
    Assignee: Flow Forward Medical, Inc.
    Inventor: F. Nicholas Franano
  • Patent number: 10260783
    Abstract: In one aspect, a refrigeration system is provided. The refrigeration system includes a compressor coupled to a variable frequency drive (VFD), a condenser, an evaporator, an oil separator, and an oil conditioning circuit. The oil conditioning circuit is thermally coupled to the VFD and configured to heat oil from the oil separator with heat produced by the VFD.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: April 16, 2019
    Assignee: CARRIER CORPORATION
    Inventors: Scott M. MacBain, David M. Rockwell, Ulf J. Jonsson
  • Patent number: 10125769
    Abstract: A scroll compressor is provided that can cool a fixed scroll and an orbiting scroll effectively via cooling fins. A scroll compressor includes: a fixed scroll, an orbiting scroll that performs orbiting motion with respect to the fixed scroll and is combined with the fixed scroll so as to form, with the fixed scroll, a compression space to compress fluid; cooling fins that are provided on the back of the fixed scroll; and cooling fins that are provided on the back of the orbiting scroll. The cooling fins and the cooling fins are taller in a central portion than in the circumference of the central portion.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: November 13, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hajime Sato, Takashi Sakuda
  • Patent number: 9835146
    Abstract: A pump system has a rotatory shaft and a rotatory drive arrangement coupled to the rotatory shaft for applying rotatory energy thereto. First through fourth pump arrangements are coupled to the rotatory shaft, each pump arrangement pumping a pulse of air during each rotation of the rotatory shaft, the first, second, third, and fourth pump arrangements pumping a corresponding pulse of air sequentially during each rotation of the rotatory shaft. The rotatory shaft has a first and second ends, and a central region therebetween where an electric motor is coaxially arranged. The first and third pump arrangements are coupled to the first end of the rotatory shaft, and the second and fourth pump arrangements are coupled to the second end of the rotatory shaft. Angularly displaced eccentric couplers couple the pump arrangements to the respective ends of the rotatory shaft.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: December 5, 2017
    Assignee: L•VAD Technology, Inc.
    Inventors: Paul G. DeDecker, Paul S. Freed
  • Patent number: 9790963
    Abstract: Presented is a system and method to control hydraulic fluid flow, more specifically throttle hydraulic fluid flow, to achieve actuator deceleration rates greater than the maximum deceleration rate of an electrically driven pump. Electric machines and electric machine inverters generally have a maximum torque and current limit beyond which they cannot be operated at. To decelerate a large inertia load for example, high electric machine torque and inverter current are required to provide the braking torque, opposing the fluid flow and pressure generated by the load and hydraulic system.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: October 17, 2017
    Assignee: Parker-Hannifin Corporation
    Inventors: Ralf Gomm, Bjorn Eriksson
  • Patent number: 9416785
    Abstract: A fan motor includes a base member including a bottom plate portion, a bearing support portion, and a screw receiving portion. The bottom plate portion extends in directions perpendicular or substantially perpendicular to a central axis below a circuit board. The bearing support portion extends upward from the bottom plate portion and has a cylindrical or substantially cylindrical shape. The screw receiving portion is arranged to project upward from the bottom plate portion on a radially outer side of the bearing support portion. At least a portion of the screw receiving portion is arranged in a hole portion defined in the circuit board.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: August 16, 2016
    Assignee: NIDEC CORPORATION
    Inventor: Yoshiaki Oguma
  • Patent number: 9261096
    Abstract: A pumping apparatus includes a housing having an inlet at a first end and an outlet at an opposite second end. An encapsulated stator defines an opening and is supported by the housing. A pressure plate includes diffuser vanes formed as part of the pressure plate. The pressure plate is formed as part of the encapsulated stator. A rotor is positioned at least partially within the opening and is rotatable with respect to the stator and an impeller is coupled to the rotor and cooperates with the pressure plate and the housing to pump a fluid from the inlet to the outlet in response to rotation of the rotor.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: February 16, 2016
    Assignee: Regal Beloit America, Inc.
    Inventor: Chih M. Lin
  • Patent number: 8944781
    Abstract: A horizontal type electrically driven gas compressor includes an electric motor installed in a suction chamber of a housing, a gas compression mechanism section installed in the housing and driven by the electric motor, a sucked refrigerant guide path for guiding a refrigerant from the suction chamber to the gas compression mechanism section, and a lubricating oil supply path for supplying a lubricating oil, which has been collected and stagnated in a bottom portion of the suction chamber, to the sucked refrigerant guide path, the lubricating oil supply path fluidly connecting the sucked refrigerant guide path and the bottom portion of the suction chamber at the position of the bottom portion of the suction chamber.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: February 3, 2015
    Assignee: Calsonic Kansei Corporation
    Inventors: Hirotada Shimaguchi, Toshiharu Watanabe
  • Patent number: 8920138
    Abstract: A motor pump unit for a high-pressure cleaning apparatus has an electric motor and a pump. The electric motor has a motor housing that is surrounded by a cooling housing with an annular space having an annular space inlet and an annular space outlet formed therebetween. The pump has a drive housing on which is supported the motor shaft, and has a suction inlet and a pressure outlet. The annular space outlet is fluidly connected to the suction inlet and liquid to be pressurized by the pump is suppliable to the annular space inlet. In order to improve the motor pump unit such that the heat load on the drive housing can be reduced, the drive housing has at least one cooling passage which is arranged upstream of the suction inlet and through which the liquid to be pressurized can flow.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: December 30, 2014
    Assignee: Alfred Kaercher GmbH & Co. KG
    Inventors: Walter Schiffhauer, Lanfranco Pol
  • Patent number: 8884480
    Abstract: A fan includes an air movement implement including a blade and a motor that drives the air movement implement. The motor includes a rotor that includes an internal diameter heat exchanger and a heat pipe having a first end and a second end, the first end in thermal contact with the internal diameter heat exchanger and the second end in thermal contact with the blade.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: November 11, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Debabrata Pal, Craig R. LeGros
  • Patent number: 8776394
    Abstract: A blower for supplying and exiting the air to and from a treating chamber of a clothes dryer.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: July 15, 2014
    Assignee: Whirlpool Corporation
    Inventors: Michael J. Catauro, Mark J. Christensen, Steven P. Lentz, Roy E. Masters
  • Patent number: 8734129
    Abstract: A motor pump unit for a high-pressure cleaning apparatus has an electric motor and a pump. The electric motor has a motor housing that is surrounded by a cooling housing with an annular space having an annular space inlet and an annular space outlet formed therebetween. The pump has a suction inlet connected to the annular space outlet and a pressure outlet. The liquid to be transported by the pump can be supplied to the annular space inlet. The cooling housing, on its inside, has at least one flow guide rib for guiding the liquid within the annular space. In order to ensure that no liquid can leak out of the annular space even in the long term, the at least one flow guide rib is spaced-apart from the motor housing.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: May 27, 2014
    Assignee: Alfred Kaercher GmbH & Co. KG
    Inventors: Walter Schiffhauer, Dieter Plachke, Lanfranco Pol
  • 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: 20140134014
    Abstract: A motor-driven compressor includes a compression unit, an electric motor, a motor drive circuit, a housing, and a first end plate. The electric motor includes a rotation shaft, a rotor provided with a rotor core, and a stator. The stator includes a state core and a coil. The coil includes first and second coil ends. The rotor core includes a refrigerant passage having a first opening that opens in the compression unit side. The first opening includes a first radially outer region. First and second regions in the housing are in communication through the refrigerant passage. The first end plate includes a first communication port arranged on a first region side end of the rotor core. The first region and the refrigerant passage are in communication through the first opening and first communication port. The first radially outer region is covered by the first end plate.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 15, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Minoru MERA, Hiroshi FUKASAKU, Shuji TAKIMOTO, Yumin HISHINUMA
  • Publication number: 20140072460
    Abstract: The invention concerns a ship comprising at least one electric motor for driving a ship and a cooling device for cooling the at least one electric motor by means at least one coolant. It is further according to the invention that the cooling device has a heat exchanger adapted to cool the at least one coolant by means of sea water.
    Type: Application
    Filed: March 15, 2012
    Publication date: March 13, 2014
    Applicant: WOBBEN PROPERTIES GMBH
    Inventor: Rolf Rohden
  • Patent number: 8668467
    Abstract: An integrated fluid handling apparatus 10 includes a power take off device 108 having a rotating power take off mechanism 122, a hydraulic pump 104 having a rotating fluid pump mechanism 146, a flow torque tube 106, and an electric motor/generator 102 having a rotating electric power conversion mechanism 173. A rotational power transfer system includes connector devices 128, 138, 166 and 172 that are drivingly connected to and that drivingly connect the mechanisms 122, 146 and 173 in one mode of operation. The electric motor/generator 102 includes heat exchange fluid flow passages that establish a fluid flow path to the inlet of the pump. The mechanisms 122, 146 and 173, and the connector devices 128, 138, 166 and 172 are assembled and used as a whole within a housing, without externally exposed mechanical drive connections and without externally exposed fluid connections, between such mechanisms and devices.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: March 11, 2014
    Assignee: Parker Hannifin Corporation
    Inventors: Robert Bruce Douglas, Dale Vanderlaan, Bruce D. Larkin
  • Patent number: 8653778
    Abstract: Provided is an inverter-integrated electric compressor having high heat resistance, which is capable of suppressing thermal interference among a plurality of power devices. Specifically provided is an inverter-integrated electric compressor which comprises a built-in motor and a substrate provided with a motor drive circuit including an inverter, an electric component including the substrate being affixed in a housing space surrounded by a compressor housing, wherein a plurality of power semiconductor elements which constitute the motor drive circuit are disposed radially around a drive shaft of the motor in a plane crossing the drive shaft. For example, the planar shape of the power semiconductor element is formed into a rectangle, and a gap having a sectorial planar shape is formed between the power semiconductor elements adjacent to each other.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: February 18, 2014
    Assignee: Sanden Corporation
    Inventors: Atsushi Saito, Makoto Shibuya, Kouki Yoshizawa, Hideo Ikeda
  • 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: 8550793
    Abstract: A compressor arrangement for compressing fresh air for internal combustion engines includes a compressor wheel and an electric motor having at least one stator and at least one rotor having a rotor magnet and a rotor gap between the rotor and stator. The rotor gap is designed such that when the compressor wheel rotates, at least 50%, of the air mass flow to be compressed is fed through the rotor gap. The compressor wheel is mounted on a shaft or contains the shaft and at least one rotor magnet or a carrier for holding the rotor magnet and is mountable as a separate part on said shaft and may be bolted, splinted, glued, shrunk, or secured by form-fit to said shaft to prevent rotation.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: October 8, 2013
    Assignees: Lindenmaier AG, SycoTec GmbH & Co. KG
    Inventors: Holger Goedecke, Rudolf Loeffler, Ralf Heber, Thomas Bischof, Sandra Maier, Oliver Kaempfer
  • Patent number: 8480375
    Abstract: An auto-stop air pump has a housing, a blower and an auto-stop device. The housing has an upper chamber, a lower chamber, a main inlet and an outlet. The upper chamber and the lower chamber communicate with each other. The main inlet and the outlet are formed through the housing respectively and communicate with the upper chamber. The blower is mounted in the housing and has a motor connected to a dual-sided impeller. The auto-stop device is mounted in the housing and has a shell, a film, a micro switch and an actuating unit. The film and the micro switch are mounted in the shell. The actuating unit is mounted movably through the shell. Owing to deformation of the film by pressure, the film presses the micro switch to close the micro switch so the air pump can stop working automatically.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: July 9, 2013
    Assignee: Dongguan Tiger Point, Metal & Plastic Products Co., Ltd.
    Inventor: Chun-Chung Tsai
  • Patent number: 8465265
    Abstract: Apparatus and methods are provided for cooling motors used to drive gas and air compressors. In particular, the cooling of hermetic and semi-hermetic motors is accomplished by a gas sweep using a gas source located in the low-pressure side of a gas compression circuit. The gas sweep is provided by the creation of a pressure reduction at the compressor inlet sufficient to draw uncompressed gas through a motor housing, across the motor, and out of the housing for return to the suction assembly. The pressure reduction is created by means provided in the suction assembly, such as a nozzle and gap assembly, or alternatively a venturi, located upstream of the compressor inlet. Additional motor cooling can be provided by circulating liquid or another cooling fluid through a cooling jacket in the motor housing portion adjacent the motor.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: June 18, 2013
    Assignee: Johnson Controls Technology Company
    Inventor: Paul de Larminat
  • Patent number: 8439655
    Abstract: Ventilating device (1) comprising a casing (6) intended to channel at least one air flow (3) created by a blower wheel (5), the said casing (6) delimites a main air channel (7) in which a main air flow (3a) circulates and a secondary air channel (8) intended to bring towards a motor (4) a secondary air flow (3b) in order to cool the motor (4), the said secondary air channel (8) comprising a inlet (11) arranged in a main channel wall (7c) and a outlet arranged in a plan containing a casing end by which the wheel (5) is introduced, the said secondary channel (8) further comprising a means intended to change at least twice the direction of the secondary air flow (3b) when the secondary air flow (3b) passes through the secondary air channel (8).
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: May 14, 2013
    Assignee: Valeo Systemes Thermiques S.A.S.
    Inventor: Serge Pouysegur
  • Publication number: 20130028759
    Abstract: A self-cooling diagonal ventilating fan (30; 130) has a fan housing (36) and a fan wheel (80), rotatable around a rotation axis (168), that has, associated with it, an electronically commutated motor (73) which has an internal stator (64) and an external rotor (68, 152). Provided on the outer side of the fan wheel (80) are fan blades (82) which have, with reference to the rotation direction (84) of the fan wheel (80) during operation, a front side (114) and a back side (112), such that there occurs on the fan wheel (80) during operation, adjacent the back side (112) of each blade (82), a negative-pressure zone (110) that is connected via an opening (90) of the fan wheel (80) to the wheel's inner side (81), in order to draw cooling air outward from said inner side.
    Type: Application
    Filed: March 20, 2012
    Publication date: January 31, 2013
    Applicant: EBM-PAPST ST. GEORGEN GMBH & CO. KG
    Inventor: Hansjoerg Berroth
  • Patent number: 8360735
    Abstract: A serial axial fan preferably includes a first impeller and a second impeller each having a plurality of blades radially extending with a predetermined rotation axis as the center, a first motor portion, a second motor portion, a first housing, and a second housing. The first motor portion has a first circuit board on which at least one electronic component arranged to control the driving of the first impeller is mounted. The second motor portion has a second circuit board on which at least one electronic component arranged to control the driving of the second impeller is mounted. The first and second circuit boards are electrically connected. The driving of the first impeller and the driving of the second impeller are controlled by the electronic component disposed on at least one of the first and second circuit boards.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: January 29, 2013
    Assignee: Nidec Corporation
    Inventors: Satoru Hanaoka, Hidenobu Takeshita, Hiroyoshi Teshima
  • Patent number: 8303271
    Abstract: An electric compressor integral with a drive circuit incorporates a compression mechanism section, a motor for driving the compression mechanism section, and a motor drive circuit. A refrigerant gas chamber having a refrigerant gas expansion space, into which refrigerant gas is introduced, is formed between a drive circuit installation section and a motor installation section, by a first partition wall provided on the drive circuit side and a second partition wall provided on the motor side, the side opposite the drive circuit side. The refrigerant gas chamber is interrupted by the first partition wall against the drive circuit installation section and is communicated with the motor installation section by a through hole that is provided in the second partition wall and through which the refrigerant gas can pass.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: November 6, 2012
    Assignee: Sanden Corporation
    Inventors: Hideo Ikeda, Eiji Kobayashi, Kazumi Ohsato, Masanori Taguchi, Shigeyuki Koyama, Suguru Okazawa
  • Patent number: 8303270
    Abstract: A motor-driven compressor includes a housing having an inlet port, a compression mechanism for compression of refrigerant introduced from an external refrigerant circuit via the inlet port into the housing, an inverter having a heat-generating component, an electric motor driven by the inverter, and a rotary shaft rotated by the electric motor thereby to drive the compression mechanism. The electric motor, the compression mechanism and the inverter are aligned in the housing in axial direction of the rotary shaft. An inlet pipe is connected to the inlet port. The housing has an outer peripheral surface in contact with the inlet pipe. The heat-generating component of the inverter is disposed adjacent to or in contact with the inlet pipe so as to be thermally coupled to the inlet pipe.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: November 6, 2012
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masao Iguchi, Masahiro Kawaguchi, Ken Suitou, Tatsushi Mori, Hiroshi Fukasaku
  • Patent number: 8262370
    Abstract: Arrangement in a blower including at least an engine and a fan, the fan includes a fan housing enclosing a fan wheel and a fan inlet. The engine and fan are surrounded by a casing provided with an air inlet to let air in to the fan inlet placed inside the casing. The air stream from the air inlet in the housing to the fan inlet cools the engine and components inside the casing before it enters the fan inlet and leaves the blower via a blower tube. The fan housing is provided with an opening (31) placed in the fan housing so that air is allowed to leave the fan in case of blocked air stream in the fan outlet or blower tube.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: September 11, 2012
    Assignee: Husqvarna AB
    Inventors: Mikael Kågebäck, Andreas Larsson, Lars Malmqvist, Andreas Hedlund, Lotta Norinder, Anna Sjögren, Anders Jakobsson
  • Patent number: 8257059
    Abstract: The present invention relates to an air supply system for a vehicle, which includes a curved diffuser passageway and a volute formed on upper portion of the diffuser passageway to sufficiently secure a length of the diffuser passageway, thereby enhancing a pressure conversion efficiency and reducing a size of the entire system, and which further includes a guide for guiding an air flow toward an input of an impeller, thereby minimizing a loss occurring when air passing through a motor housing flows to the inlet of the impeller, and reducing a weight of an outlet duct.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: September 4, 2012
    Assignee: Halla Climate Control Corporation
    Inventors: Kyungseok Cho, Woojune Kim, Changhoon Oh
  • Patent number: 8251676
    Abstract: An axial-flow fan for a vehicle radiator includes a fan wheel that delivers the main air flow and is driven by a hub motor coupled to the fan wheel. The vehicle radiator is on the intake side of the fan wheel, the hub motor during operation is cooled by a secondary air flow, and the cooling air flow of the hub motor flowing out from an air outlet opening is on the intake side in the hub area of the fan wheel. An air baffle device including a propeller is assigned to the hub motor and the cooling air flow passing through the air baffle device is led out of the air outlet opening, avoiding disturbances of the main air flow delivered by the fan wheel.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: August 28, 2012
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg
    Inventors: Karl-Heinz Fleischmann, Stefan Berg, Alexander Gass
  • Patent number: 8246322
    Abstract: A positioning and retaining element has a cylindrical rotary belt of substantially constant thickness, having an inner diameter substantially equal to the outer diameter of the stator to be capable of being mounted substantially coaxial clamped about the stator. The positioning and retaining element also has a number of support members projecting radially from the belt outwards and having each a support surface on the housing of the compressor, the support surfaces being located on the lateral surface of a fictitious rotary cylinder of same axis as the other belt and of diameter substantially equal to the inner diameter of the housing, such that the positioning and retaining element can be mounted clamped inside the housing.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: August 21, 2012
    Assignee: Danfoss Commercial Compressors
    Inventors: David Genevois, Pierre Ginies
  • Publication number: 20120195772
    Abstract: A motor pump unit for a high-pressure cleaning apparatus has an electric motor and a pump. The electric motor has a motor housing that is surrounded by a cooling housing with an annular space having an annular space inlet and an annular space outlet formed therebetween. The pump has a drive housing on which is supported the motor shaft, and has a suction inlet and a pressure outlet. The annular space outlet is fluidly connected to the suction inlet and liquid to be pressurized by the pump is suppliable to the annular space inlet. In order to improve the motor pump unit such that the heat load on the drive housing can be reduced, the drive housing has at least one cooling passage which is arranged upstream of the suction inlet and through which the liquid to be pressurized can flow.
    Type: Application
    Filed: August 4, 2011
    Publication date: August 2, 2012
    Applicant: Alfred Kaercher GmbH & Co. KG
    Inventors: Walter Schiffhauer, Lanfranco Pol
  • Patent number: 8221095
    Abstract: A method for protection of compressor modules against undesirable influx of contaminated gas, comprising a pressure housing (3) which by means of one of more sealing elements (4) is generally divided into a first compartment (8) equipped with a compressor (2) and a second compartment (7) equipped with a gas-filled motor (1), the compressor and the motor being drivably connected to each other by at least one shaft (9), is distinguished by protecting the second compartment (7) with motor (1) against direct influx of contaminated gas from the first compartment (8) with compressor (2) by means of compressed gas that is supplied from a withdrawal point (13) at the first or intermediate stage of the compressor, or from the compressor outlet (16), and by introducing the compressed gas directly into the seal (4) or in between two or more seals so as to flow through the at least one seal (4) back to the first compartment (8). The invention also relates to an apparatus for use in connection with the method.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: July 17, 2012
    Assignee: Aker Subsea AS
    Inventors: Håkon Skofteland, Kjell Olav Stinessen
  • Patent number: 8147216
    Abstract: The invention relates to a motor-pump unit having an electric motor and a pump, the pump having a suction inlet and a pressure outlet, and the electric motor comprising a motor housing which is enclosed by a cooling housing, whereby a cavity is formed, it being possible for cooling liquid to be fed to the cavity via a cooling-housing inflow and to be conducted away therefrom via a cooling-housing outflow, and the cooling-housing outflow being in flow connection with the suction inlet.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: April 3, 2012
    Assignee: Alfred Kaercher GmbH & Co., KG
    Inventors: Walter Schiffhauer, Lanfranco Pol
  • Publication number: 20120034111
    Abstract: A motor pump unit for a high-pressure cleaning apparatus has an electric motor and a pump. The electric motor has a motor housing that is surrounded by a cooling housing with an annular space having an annular space inlet and an annular space outlet formed therebetween. The pump has a suction inlet connected to the annular space outlet and a pressure outlet. The liquid to be transported by the pump can be supplied to the annular space inlet. In order to improve the motor pump unit such that the motor housing can have a small wall thickness and can still be cooled effectively over a large surface area, the motor housing is configured as a one-piece deep-drawn part which in a front shell area contacts stator laminations of the electric motor and in a rear shell area is arranged at a distance from rear coil heads of the stator and in the rear shell area has stiffness-enhancing depressions, wherein the front and the rear shell areas are surrounded by the annular space.
    Type: Application
    Filed: August 4, 2011
    Publication date: February 9, 2012
    Applicant: Alfred Kaercher GmbH & Co. KG
    Inventors: Walter Schiffhauer, Lanfranco Pol
  • Patent number: 8047813
    Abstract: An aromatherapy air pump is damped and largely isolated against acoustic and mechanical transmission of vibrations in three dimensions by a combination of containment within multiple, nested housings and standoffs provided by elastomeric supports having anisotropic geometry. An elastomeric liner as well as unstable legs, physical separations, and hermetic seals combine to provide sound reduction for noise and vibration emanating from the pump and its drive motor.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: November 1, 2011
    Inventor: Earl Vaughn Sevy
  • Patent number: 8021127
    Abstract: Apparatus and methods are provided for cooling motors used to drive gas and air compressors. In particular, the cooling of hermetic and semi-hermetic motors is accomplished by a gas sweep using a gas source located in the low-pressure side of a gas compression circuit. The gas sweep is provided by the creation of a pressure reduction at the compressor inlet sufficient to draw uncompressed gas through a motor housing, across the motor, and out of the housing for return to the suction assembly. The pressure reduction is created by structure in the suction assembly, such as a nozzle and gap assembly, or alternatively a venturi, located upstream of the compressor inlet. Additional motor cooling can be provided by circulating liquid or another cooling fluid through a cooling jacket in the motor housing portion adjacent the motor.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: September 20, 2011
    Assignee: Johnson Controls Technology Company
    Inventor: Paul De Larminat
  • Patent number: 7946831
    Abstract: To improve a compressor for refrigerant, comprising an outer casing, a scroll compressor disposed in the outer casing, a drive unit, disposed in the outer casing, for the second compressor body, having an eccentric drive, a drive shaft running in lying arrangement or approximately horizontally in the outer casing and a drive motor, which includes a stator and a rotor seated on the drive shaft, as well as a lubricant supply, in such a manner that the minimum possible quantity of lubricant is required, it is proposed that a lubricant collection space is disposed in the outer casing, that the lubricant supply has a delivery wheel which delivers lubricant from a delivery sump into a feed space for the drive shaft, and that a lower pressure prevails in a lubricant delivery space accommodating the delivery sump than in the lubricant collection space, so that the lubricant which collects in the lubricant space, on account of the pressure difference, passes into the delivery sump.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: May 24, 2011
    Assignee: Bitzer Kuehlmaschinenbau GmbH
    Inventors: Dieter Roller, Gernot Balz, Thomas Varga
  • Patent number: 7699587
    Abstract: A centrifugal blower comprising a cooling air path having an inlet communicating with a blower space and an outlet communicating with the inlet of the motor airflow path, the cooling air path having an upstream portion that extends axially in the direction from the opposite end of the motor toward the drive end of the motor, and the cooling air path having a downstream portion that extends axially in the direction from the drive end of the motor toward the opposite end of the motor.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: April 20, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Richard Chapman, Robert Hodgson White, Jr.
  • Publication number: 20100054969
    Abstract: An apparatus (1) includes a housing (2), an air feed duct (21) a volute (5), an impeller (4), and a motor (3) for driving the rotation of the impeller (4) so as to generate a centrifugal air flow in the volute (5). The housing (2) has a first part (18a) where wall is intended, after assembly, to extend around the motor (3), espousing the shape of this motor (3) in such a way as to lie at a substantially constant distance from this motor (3); and a second part (18b, 19) where wall is intended, after assembly, to extend around the volute (5), espousing the shape of this volute (5) so as to lie at a substantially constant distance from this volute (5). The housing (2) internally forms a salient axial lump (20) which, after assembly, sits close to the hub (10) of the impeller (4).
    Type: Application
    Filed: November 12, 2007
    Publication date: March 4, 2010
    Applicant: AIRFAN
    Inventor: Gilbert Grasmuck
  • Publication number: 20100028173
    Abstract: It is an object to provide an inverter-integrated electric compressor capable of enhancing the cooling of high-voltage components, which generate a large amount of heat, among components of an inverter device disposed inside an inverter box integrated with a housing. An inverter-integrated electric compressor (1) for a vehicle air conditioner includes an inverter box (11) that is integrated with the periphery of a housing (2) accommodating an electric motor (9) and a compressing mechanism, an inverter device (20) that converts DC power to three-phase AC power and supplies it to the electric motor (9) being accommodated in the interior thereof, wherein, when the electric compressor is installed in a vehicle (30), among components of the inverter device (20), high-voltage components (21, 22) generate a large amount of heat are disposed inside the inverter box (11) at positions facing forward in a vehicle traveling direction.
    Type: Application
    Filed: September 26, 2008
    Publication date: February 4, 2010
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yuki Ichise, Takayuki Watanabe, Takeshi Hirano, Takayuki Hagita