Reciprocating Motor Patents (Class 417/416)
  • Patent number: 10495081
    Abstract: A linear compressor is provided that may include a casing, a frame accommodated in the casing, a cylinder that passes through a center of the frame, supported by the frame, and defining a compression space for a refrigerant, a piston inserted into the cylinder to reciprocate in an axial direction of the cylinder and having a first end that compresses the refrigerant supplied to the compression space, a suction muffler which is coupled to a second end of the piston and through which the refrigerant supplied to the compression space may flow, a spring that allows a resonant motion of the piston, a back cover including a cover body that defines a refrigerant opening at a central portion, such that a refrigerant passes therethrough, the back cover supporting the spring, and an inflow guide which is fixed to the cover body and guides the refrigerant passing through the refrigerant opening towards an inside of the suction muffler.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: December 3, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Seongho Ha, Hyosang Yu, Jaeyoun Lim, Kichul Choi, Jungwan Heo
  • Patent number: 10340755
    Abstract: A walking beam pumping unit onboard above surface energy harvester and converter invention that can supplement electric power to actuate a reciprocating walking beam pumping unit's prime mover, auxiliary devices, and control devices. In one embodiment, the walking beam pumping unit kinetic energy can assist gravity actuated linear and circular generators attached on the reciprocating walking beam, crank arms, pitman arms, head, and articulated reciprocating counterweight. The electro mechanical devices can switch between generating and motoring and send electric current to a capacitor for distribution. In another embodiment, the walking beam pumping unit kinetic energy can assist a mechanically actuated reciprocating piston linear generator attached to the reciprocating walking beam and foundation. In another embodiment, a circular generator device is attached to the crank arms.
    Type: Grant
    Filed: November 12, 2017
    Date of Patent: July 2, 2019
    Inventor: George R Dreher
  • Patent number: 10060426
    Abstract: A system for supplementing the electric power needed by a pump jack electric motor, thereby reducing the electric power purchased from the local utility or power supplier. The system comprises a solar photovoltaic system, or other forms of renewable energy, and regenerated power from the electric motor or drive. The system can be both “on-grid” and “off-grid.” Battery banks and capacitor banks may be used to store and provide energy.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: August 28, 2018
    Assignee: Raptor Lift Solutions, LLC
    Inventor: Kavan Graybill
  • Patent number: 9890776
    Abstract: A system for supplementing the electric power needed by a pump jack electric motor, thereby reducing the electric power purchased from the local utility or power supplier. The system comprises a solar photovoltaic system, or other forms of renewable energy, and regenerated power from the electric motor or drive. The system can be both “on-grid” and “off-grid.” Battery banks and capacitor banks may be used to store energy.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: February 13, 2018
    Assignee: Raptor Lift Solutions, LLC
    Inventor: Kavan Graybill
  • Patent number: 9746868
    Abstract: A system comprising an ambient energy source, a power supply, and a power storage device. The ambient energy source is coupled to a first terminal end of an inductor. The power supply is also coupled to the first terminal end of the inductor. The power storage device is coupled to a second terminal end of the inductor. The ambient energy source provides power through the inductor in a first direction to the power storage device. The power storage device provides power through the inductor to the power supply in a second direction opposite the first direction.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: August 29, 2017
    Assignee: Texas Instruments Incorporated
    Inventors: Aatmesh Shrivastava, Yogesh Ramadass, Steven Bartling
  • Patent number: 9739276
    Abstract: A piston-cylinder unit including a piston that is fluid pressure supported and movable in a linear manner in a cylinder, wherein the cylinder, a face wall of the piston and a face wall of the cylinder define a compression cavity which is at a minimum size in a portion of a top dead center of the piston, wherein the compression cavity is connected in a fluid transferring manner with a bearing gap which is formed between a cylinder inner circumferential wall and a piston outer circumferential wall, wherein a plurality of fluid outlet nozzles are arranged in at least one cross-sectional plane of the cylinder in the cylinder inner circumferential wall along a circumference, which fluid outlet nozzles open into the bearing gap and are connected with a supply conduit for a pressurized fluid.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: August 22, 2017
    Assignee: Aerolas GmbH
    Inventors: Michael Muth, Georg Slotta
  • Patent number: 9726164
    Abstract: A linear compressor is provided that may include a shell including a refrigerant inlet, a cylinder provided within the shell, a piston reciprocated within the cylinder, the piston having a flow space in which a refrigerant may flow, a motor assembly that provides a drive force, the motor assembly including a permanent magnet, a flange that extends from an end of the piston in a radial direction, the flange having an opening that communicates with the flow space of the piston and a coupling hole defined outside of the opening, a support coupled to the coupling surface of the flange to support a plurality of springs, and at least one reinforcing rib that protrudes from the coupling surface to guide deformation of the flange while the flange and the support are coupled to each other.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: August 8, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyoungseok Kang, Wonhyun Jung, Chulgi Roh, Sangsub Jeong, Kiwook Song, Jookon Kim
  • Patent number: 9617990
    Abstract: A system for supplementing the electric power needed by a pump jack electric motor, thereby reducing the electric power purchased from the local utility or power supplier. The system comprises a solar photovoltaic system, or other forms of renewable energy, and regenerated power from the electric motor or drive. The system can be both “on-grid” and “off-grid.” Battery banks and capacitor banks may be used to store energy.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: April 11, 2017
    Inventor: Kavan Graybill
  • Patent number: 9206799
    Abstract: The compressor of the invention comprises: a block with a cylinder; a movable assembly formed by a piston reciprocating in the cylinder and coupled to an actuating means by a rod; and a resonant spring having a first and a second diametrical end portion which are attached to the movable assembly by a first fixation means (MF1) and, to the block, by a second fixation means (MF2) which is adjustably attached to the block and to said second end portion so as to affix the latter to the block in a position defined along the displacement of the resonant spring in three directions orthogonal to one another and defined by the direction of the axis of the resonant spring, by the diametrical direction of the second end portion and by the diametrical direction orthogonal to said two first directions, and also along the angular displacement of said second end portion around said three directions orthogonal to each other.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: December 8, 2015
    Assignee: Whirlpool S.A.
    Inventors: Dietmar Erich Bernhard Lilie, Rinaldo Puff
  • Patent number: 9028227
    Abstract: An electromagnetic pump is provided, which includes a hollow tubular body extending along a longitudinal direction, a piston mounted so as to be able to move inside the hollow tubular body, a solenoid, supplied with alternating current and assembled around at least a portion of the body and a magnetic envelope surrounding at least a portion of the body. The presence of a magnet magnetized longitudinally in a predetermined direction and a magnetic envelope orienting and channeling flux lines created by the magnet either around the solenoid or directly inside themselves creates an oscillating magnetic force on the piston.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: May 12, 2015
    Assignee: Sauermann Industrie SA
    Inventor: François Sardet
  • Patent number: 9017044
    Abstract: An electromagnetic pump including a reciprocating piston in a cylinder; an electromagnetic portion that moves the piston forward; a first biasing member that moves the piston backward; a support member that supports the first biasing member and defines a pump chamber together with the cylinder and the piston; an intake valve that is incorporated into the support member, is connected to an intake port and prohibits hydraulic fluid from moving in reverse; and a discharge valve that is connected to a discharge port and prohibits the hydraulic fluid from moving in reverse. The intake valve includes a ball, an opening portion of the intake port, and a second biasing member that presses the ball against the opening portion from a side opposite to a direction in which the hydraulic fluid moves. In the opening member, an inner peripheral surface that receives the ball is formed in a taper shape.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: April 28, 2015
    Assignee: Aisin AW Co., Ltd.
    Inventors: Masaya Nakai, Kota Fukao, Takahiro Kokubu
  • Patent number: 9004883
    Abstract: A low noise, high efficiency solenoid pump includes a housing containing a hollow electromagnetic coil. Within the coil resides a pump assembly defining a tubular body having a pair of opposed ends which respectively include an inlet or suction port and an outlet or pressure port and within which a plunger or piston resides. The piston is biased in opposite directions by a pair of opposed compression springs. A first compression spring limits and arrests travel of the piston during the suction or return stroke and a second compression spring limits travel of the piston during the pumping stroke and returns the piston after the pumping stroke. The piston includes a first check valve that opens to allow hydraulic fluid into a pumping chamber during the suction stroke and closes during the pumping stroke to cause fluid to be pumped out of the pumping chamber.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: April 14, 2015
    Assignee: GM Global Technology Operations, LLC
    Inventors: Vijay A. Neelakantan, Paul G. Otanez, Shushan Bai
  • Patent number: 8998589
    Abstract: The linear compressor comprises a shell (10) which affixes a cylinder (20) defining a compression chamber (21) housing a piston (30); a linear electric motor (40) having a fixed part (41) affixed to the shell (10) and a reciprocating movable part (42); an actuating means (50) driven by the movable part (42); an elastic means (60a) coupling the actuating means (50) to the piston (30), so that they are reciprocated in phase opposition. A supporting elastic means (70) connects the actuating means (50) to the shell (10) and presents a radial rigidity for supporting the lateral loads actuating on said movable part (42) and actuating means (50), and for minimizing the axial misalignments between the movable part (42) and the fixed part (41) of the linear electric motor (40), the supporting elastic means (70) presenting a minimum axial rigidity for allowing the displacement of both the piston (30) and the actuating means (50).
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: April 7, 2015
    Assignee: Whirlpool S.A.
    Inventors: Dietmar Erich Bernhard Lilie, Paulo Rogerio Carrara Couto, Celso Kenzo Takemori, Egidio Berwanger
  • Patent number: 8974347
    Abstract: A fluid pressure control device for an automatic transmission that transfers power from a motor via a friction engagement element, including: a first pump actuated by the power from the motor; a pressure regulator that regulates pressure of a working fluid pumped from the first pump; a first flow passage connected to an output port of the pressure regulator; a second flow passage connected to a fluid pressure chamber of the friction engagement element; a switcher that establishes and blocks connection between the first flow passage and the second flow passage; a second pump actuated by supply of electric power and capable of supplying the working fluid to the second flow passage with connection between the first flow passage and the second flow passage blocked by the switcher; and a pressure accumulator that accumulates pressure of the working fluid. The pressure accumulator is connected to the first flow passage.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: March 10, 2015
    Assignee: Aisin AW Co., Ltd.
    Inventors: Tetsuya Shimizu, Kenichi Tsuchida, Satoshi Nishio, Kazuki Kojima, Kazunori Ishikawa
  • Patent number: 8926296
    Abstract: A linear compressor (100) applicable to a cooling system (20) includes a piston (1) driven by a linear motor (10), the piston (1) having displacement range controlled by means of a controlled voltage (VM), the controlled voltage (VM) having a voltage frequency (?P) applied to the linear motor (10) and adjusted by a processing unit (22), the range of piston (1) displacement being dynamically controlled in function of a variable demand of the cooling system (20), the linear compressor (100) having a resonance frequency, the processing unit (22) adjusting the range of piston (1) displacement, so that the linear compressor (100) will be dynamically kept on resonance throughout the variations in demand of the cooling system (20).
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: January 6, 2015
    Assignee: Whirlpool, S.A.
    Inventors: Paulo Sergio Dainez, Dietmar Erich Bernhard Lilie, Márcio Roberto Thiessen
  • Patent number: 8876497
    Abstract: A linear compressor is provided that includes a cylinder having a compression space for refrigerant therein, a piston that linearly reciprocates inside the cylinder in an axis direction to compress the refrigerant, and a frame having a mounting hole so that one end of the cylinder may be mounted thereon and a deformation prevention portion in some section around the mounting hole brought into contact with the one end of the cylinder. Even if a size of the cylinder is increased and a size of the frame limited, the frame is provided with enough strength to support the cylinder, thereby reducing fastening deformations and improving operation reliability.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: November 4, 2014
    Assignee: LG Electronics Inc.
    Inventor: Jung-Hae Kim
  • Patent number: 8850845
    Abstract: A portable cooling unit comprising a magnetic spiral vapor pump that utilizes a magnetic pulse between two electromagnets and spiral drive slots to pull a piston back-and-forth 180-degrees and thereby alternately align compression slots on the piston's opposing ends with vapor suction ports and highly-compressed vapor discharge ports. Electromagnet use lowers the amount of battery power required for piston rotation. A condenser in a mounting pan under the pump achieves refrigerant condensation, while a fan blowing air through an evaporator positioned within a flexible hose causes cool air discharge through openings in the hose's terminal end fitting. The condenser utilizes surplus condensation from the evaporator to aid its vapor-to-liquid conversion, and batteries only provide power for the magnetic control module and fan.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: October 7, 2014
    Inventor: David Wayne Tucker
  • Patent number: 8834137
    Abstract: A pump includes a substantially tubular housing having an inlet end and an outlet end and defining a central axis and a chamber within the body portion, and a movable valve assembly slidably received within the housing for movement in the direction of the central axis. The pump also includes a handle assembly slidably disposed at least partially around an outer circumference of the housing for movement in the direction of the central axis, the handle assembly being substantially annular ring-shaped, and the handle assembly including a grip engageable by a hand of an operator for manually sliding the handle assembly, the handle assembly being coupled to the movable valve assembly, manual movement of the handle assembly along the central axis causing corresponding movement on the movable valve assembly along the central axis.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: September 16, 2014
    Assignee: Bemis Manufacturing Company
    Inventors: Paul Andrew Sworske, Michael Joseph Holz
  • Publication number: 20140241919
    Abstract: A motor for a compressor, and a reciprocating compressor having the same, are provided. A winding coil may be formed by removing a bobbin from the winding coil, and then coating an insulating material on an outer circumferential surface of the winding coil, to allow heat and moisture generated by the winding coil to be emitted to outside and provide enhanced performance and reliability. As a bobbin is removed from the winding coil, a coil line may be wound on the removed portion of the bobbin to enhance an occupation ratio by the coil line on the same area, and thus enhance efficiency of the motor. An elastic member or an adhesive may be inserted or applied into a space between the winding coil and a coil insertion groove of an inner stator to minimize vibrations of a coil line. The insulating material, which is in the form of powder, may melt while the coil line is adhered as the self-bonding material melts, forming a coating layer.
    Type: Application
    Filed: February 27, 2014
    Publication date: August 28, 2014
    Inventors: Sangsub JEONG, Jungsik Park, Hyuk Lee, Jehoon Kim
  • Patent number: 8770951
    Abstract: An air pump structured to facilitate the installation of a pair of pistons includes a casing (17) having a pair of cylinder chambers (14) slidably accommodating a pair of pistons (16), respectively, and a drive chamber accommodating electromagnets between the pair of cylinder chambers. The pump casing has mutually opposing side walls and a cylindrical peripheral wall defining the drive chamber. The side walls have circular cylindrical inner peripheral surfaces (28-1) of the cylinders defined therein, respectively. A piston assembly having the pistons connected to the opposite ends of an armature (34) is inserted into the pump casing through one of the cylindrical inner peripheral surfaces and installed therein. The peripheral wall has an electromagnet-loading opening (26-2) through which electromagnet pedestal members (26-7) and the electromagnets are inserted into the casing and secured therein.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: July 8, 2014
    Assignee: Nitto Kohki Co., Ltd.
    Inventor: Shigemitsu Ishibashi
  • Patent number: 8708662
    Abstract: A linear compressor for adjusting a variable rate of a cooling capacity is provided. The linear compressor may include a fixed member having a compression space formed therein, a movable member linearly reciprocated in the fixed member to compress a refrigerant drawn into the compression space, one or more springs provided to elastically support the movable member in the motion direction of the movable member, a motor unit including a motor connected to the movable member to linearly reciprocate the movable member in the axial direction and a capacitor connected in series to the motor, and a motor control unit controlling an AC voltage applied to the motor to adjust a variable rate of a cooling capacity by the reciprocation of the movable member.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: April 29, 2014
    Assignee: LG Electronic Inc.
    Inventors: Jin Seok Hu, Shin Hyun Park, Young Geul Kim, Kyo Lyong Kang
  • Patent number: 8696330
    Abstract: The invention relates to a reciprocating piston pump for delivering a liquid. The pump includes a solenoid with an actuator and an outlet port. A check valve with a seat body is assigned to the outlet port for keeping a return flow of the liquid out of the reciprocating piston pump. The seat body bears an impact damping face at a front face facing away from a valve seat of the check valve, and the valve seat of the check valve and the impact damping face are made from the same elastomer material.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: April 15, 2014
    Assignee: Thomas Magnete GmbH
    Inventors: Olaf Ohligschlaeger, Axel Mueller, Michael Mueller, Andreas Monzen, Stefan Quast, Bernd Koehler, Michael Feckler
  • Patent number: 8678788
    Abstract: A linear compressor is provided. Unnecessary parts of a motor cover of the compressor are bent toward a rear cover in an axis direction to form supporting ends of the motor cover, and the supporting ends of the motor cover are welded directly to the rear cover, thereby considerably cutting down the material cost.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: March 25, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jung-Hae Kim, Yoon-Seok Yang, Jaesang Park, Seong-Joon Hong, Dong-Han Kim, Seong-Yeol Hyeon
  • Publication number: 20130302181
    Abstract: A reciprocating engine has several piston assemblies fitted with embedded magnets in positions that can be alternately repelled and attracted by electromagnetic coils within each of the piston cylinders. The magnetic piston assemblies are connected by rods to a crankshaft with a flywheel. The electromagnetic coils are vented to allow air intake and exhaust to flow through to the piston chambers. Valves and valve timing are controlled relative to the crankshaft rotation such that compressed air can be generated and stored in tanks. The compressed air is used to power air motors to turn electric generators for on-board battery charging. The reciprocating electric engine is configured to idle at a speed that overcomes friction.
    Type: Application
    Filed: May 9, 2012
    Publication date: November 14, 2013
    Inventor: Herman Tyrone Charity, III
  • Patent number: 8550789
    Abstract: The present invention discloses a linear compressor which makes it possible to precisely operate a voltage using a current without having a high-capacity capacitor connected in series to a motor.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: October 8, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jin Seok Hu, Shin Hyun Park, Young Geul Kim, Kyo Lyong Kang
  • Patent number: 8529224
    Abstract: A hermetic compressor for adjusting the length and cross sectional area of a communication path as a refrigerant flow passage, so as to attenuate a discharge pulsation and consequently, a vibration and noise thereof. The hermetic compressor, which includes a cylinder head having a discharge chamber to discharge a compressed refrigerant and a discharge muffler to receive the refrigerant discharged from the discharge chamber, further includes a communication path to communicate the discharge chamber and the discharge muffler with each other, so as to allow the refrigerant to flow from the discharge chamber into the discharge muffler, and an auxiliary communication tube to increase a length of the communication path for increasing a refrigerant flow distance. The auxiliary communication path reduces the cross sectional area of a refrigerant flow passage while increasing a refrigerant flow distance, thereby attenuating a low-frequency component of the discharge pulsation.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: September 10, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong Il Park, Jeong Hoon Kang, Ji Hoon Choi, Phil Soo Chang
  • Patent number: 8465266
    Abstract: Vacuum pressure systems are provided. In this regard, a representative vacuum pressure system includes: an inlet; and a linear actuator having a permanent magnet, a coil, an inner ferromagnetic core and an outer ferromagnetic core, the outer ferromagnetic core surrounding at least a portion of each of the permanent magnet, the coil, and the inner ferromagnetic core; the linear actuator being operative to exhibit relative motion between the permanent magnet and the coil responsive to an electrical current being applied to the coil such that the linear actuator forms vacuum pressure and draws fluid into the inlet.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: June 18, 2013
    Assignee: United Technologies Corp.
    Inventors: Jacek F. Gieras, Thomas G. Tillman, Hayden M. Reeve
  • Patent number: 8371827
    Abstract: The suspension system is applied in a compressor, presenting a shell in which interior is horizontally suspended a motor-compressor assembly having opposite ends that are spaced from the shell by an axial spacing. Mounting elements are each attached to an end of the motor-compressor assembly and suspension springs are mounted to the shell and to each respective mounting element. The suspension system comprises stop elements attached to the shell and having a free end portion disposed between a respective end of the motor-compressor assembly and the adjacent suspension spring. A first distance defined between the stop element and the adjacent end of the motor-compressor assembly is smaller than the axial spacing and smaller than a second distance defined between the stop element and an adjacent suspension spring.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: February 12, 2013
    Assignee: Whirlpool S.A.
    Inventors: Dietmar Erich Bernhard Lilie, Claudio Roberto Hille
  • Patent number: 8366415
    Abstract: A linear compressor is provided that includes a shell; a fixed member installed inside the shell, and including a cylinder that provides a compression space for a refrigerant introduced into the shell; a moving member including a piston that compresses the refrigerant sucked into the compression space inside the cylinder, and that is linearly reciprocated with respect to the fixed member; and a suction muffler positioned on or in a suction passage of the refrigerant inside the shell. A suction volume with a larger sectional area in a central portion than in both ends is defined in the suction muffler.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: February 5, 2013
    Assignee: LG Electronics Inc.
    Inventors: Yang-Jun Kang, Young-Hoan Jeon
  • Patent number: 8360749
    Abstract: The arrangement and the process are applied in a compressor comprising: a cylinder block (2); a movable assembly including a piston (5); and a resonant spring (11) having a first end portion (11a), affixed to the cylinder block (2) by a first fixation assembly (20), and a second end portion (11b) affixed to the movable assembly by a second fixation assembly (30). The first or the second fixation assembly (20, 30) comprises a bearing portion (21, 31) attached around one of the end portions (11a, 11b) of the resonant spring (11) and having a fixation face (21b, 31b), and a bearing receiving portion (22, 32), previously attached to the cylinder block (2) or to the movable assembly and having a junction face (22b, 32b), the fixation and junction faces (21b, 31b, 22b, 32b) being welded together, securing the resonant spring (11) to the movable assembly and to the cylinder block (2), maintaining the movable assembly concentric to the cylinder (2a) and in a predetermined axial positioning.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: January 29, 2013
    Assignee: Whirlpool S.A.
    Inventor: Rogerio Ribeiro Morrone
  • Patent number: 8308612
    Abstract: A drive unit that includes a solenoid device that includes: a solenoid section having a movable portion that abuts on a case to arrive at an initial state when de-energized; a pump section axially sliding in association with a movement of the movable portion by an electromagnetic force of the solenoid section and pumping a hydraulic fluid by reciprocation; and an elastic member biasing the pump section in a direction counter to the electromagnetic force of the solenoid section; and a control unit that controls the solenoid device so that a current applied to the solenoid section is repeatedly increased and decreased between an upper limit value and a lower limit value that is greater than 0.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: November 13, 2012
    Assignee: Aisin Aw Co., Ltd.
    Inventors: Tetsuya Shimizu, Kenichi Tsuchida, Akitomo Suzuki, Kazunori Ishikawa, Kazuhiko Kato
  • Patent number: 8303273
    Abstract: A linear compressor is provided in which a resonance frequency may be synchronized with an operating frequency. The linear compressor may include a fixed member including a cylinder, a movable member including a piston for compressing refrigerant in the cylinder, a center portion that coincides with the center of the piston, and a support that extends in a radial direction of the piston and linearly reciprocates about the fixed member, a plurality of front mainsprings arranged symmetrically about the center of the piston and each having one end supported on a front side of the support of the supporter and the other end supported on the fixed member, a single rear mainspring having one end supported on a rear side of the supporter and the other end supported on the fixed member, and a plurality of mass members coupled to a rear side of the supporter at a predetermined distance from the outer diameter of the rear mainspring.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: November 6, 2012
    Assignee: LG Electronics Inc.
    Inventors: Yang-Jun Kang, Young-Hoan Jeon
  • Publication number: 20120275941
    Abstract: An ultrasonic fluid pressure generator for generating high pressure head in a fluid. The ultrasonic fluid pressure generator comprises a transducer comprising a piezoelectric actuator and a displacement amplifier, the displacement amplifier having a fluid channel therethrough, the displacement amplifier being connected to the piezoelectric actuator at one end and having a free vibrating tip at another end; a reflecting condenser disposed at the vibrating tip of the displacement amplifier to form a gap between the vibrating tip and a reflecting surface of the reflecting condenser; and a casing configured for establishing a standing wave in the fluid contained within the casing, the transducer and the reflecting condenser being at least in part within the casing.
    Type: Application
    Filed: December 22, 2009
    Publication date: November 1, 2012
    Applicant: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Freddy Yin Chiang Boey, Jan Ma, Tao Li
  • Patent number: 8292601
    Abstract: Fluid transfer devices for use in, for example, ambulatory infusion devices and infusions devices including fluid transfer devices.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: October 23, 2012
    Assignee: The Alfred E. Mann Foundation For Scientific Research
    Inventor: Lawrence Scott Ring
  • Publication number: 20120251359
    Abstract: A low noise, high efficiency solenoid pump includes a housing containing a hollow electromagnetic coil. Within the coil resides a pump assembly defining a tubular body having a pair of opposed ends which respectively include an inlet or suction port and an outlet or pressure port and within which a plunger or piston resides. The piston is biased in opposite directions by a pair of opposed compression springs. A first compression spring limits and arrests travel of the piston during the suction or return stroke and a second compression spring limits travel of the piston during the pumping stroke and returns the piston after the pumping stroke. The piston includes a first check valve that opens to allow hydraulic fluid into a pumping chamber during the suction stroke and closes during the pumping stroke to cause fluid to be pumped out of the pumping chamber.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 4, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Vijay A. Neelakantan, Paul G. Otanez, Shushan Bai
  • Patent number: 8277204
    Abstract: A reciprocating motor and a reciprocating compressor having the same are provided. One side of each of outer and inner cores forming a stator are connected to each other, to prevent a magnetic flux generated by the coil and a magnet from leaking out of the stator. Hence, it is possible to fabricate components of the reciprocating compressor employing such a reciprocating motor by using a relatively low-cost magnetic substance, resulting in a decrease in fabricating costs of the compressor. Also, a length of the magnet may be reduced, which results in a reduction of the cost for the magnet, thereby decreasing fabricating costs of the reciprocating motor and the reciprocating compressor employing the reciprocating motor.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: October 2, 2012
    Assignee: LG Electronics Inc.
    Inventors: Jong-Yoon Choi, Kyeong-Bae Park, Ki-Chul Choi, Eon-Pyo Hong, Jin-Sung Park
  • Patent number: 8241015
    Abstract: The invention refers to a linear compressor, comprising: a shell (20); a cylinder (30) affixed to the shell (20) and defining a compression chamber (C); a piston (40) to be displaced in reciprocating movement in the interior of the compression chamber (C) during the operation of the compressor; a linear electric motor (50) mounted to the shell (20); and an actuating means (60) operatively coupling the piston (40) to the linear electric motor (50), in order to make the latter displace the piston (40) in a reciprocating movement in the interior of the compression chamber (C), the actuating means (60) being coupled to the piston (40) by an elastic means (70), so that the actuating means (60) and the piston (40) be displaced in phase opposition during the operation of the compressor.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: August 14, 2012
    Assignee: Whirlpool S.A.
    Inventors: Dietmar Erich Bernhard Lillie, Egidio Berwanger, Raul Bosco, Jr., Emerson Moreira, Davi Luis Goergen, Fabricio Caldeira Possamai
  • Patent number: 8177529
    Abstract: In a compressor, a motor includes a stator and a moving member that reciprocates. A frame supports the stator and a conductivity member flows at least a portion of magnetic flux flowing away from the stator back to the stator. Accordingly, the reciprocating compressor has enhanced energy efficiency.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: May 15, 2012
    Assignee: LG Electronics, Inc.
    Inventors: Sang-Sub Jeong, Won-Sik Oh, Hyuk Lee
  • Patent number: 8157604
    Abstract: An electrical linear motor for propelling a marine vessel through a liquid medium, comprises a housing secured to the marine vessel and submerged in the liquid medium, an insert within the housing and having at least two electrical coil windings disposed on internal walls of the insert; a thruster subassembly moves between the internal walls of the insert, the thruster subassembly having a front cover, an internal channel with check valve and at least two sets of permanent magnets attached to the thruster subassembly and maintained in sufficiently close proximity to the electrical coil windings so that an electromagnetic field created by a controlled energizing of the electrical coil windings interacts with a magnetic field from the permanent magnets to provide a resulting linear force, which causes a reciprocating linear motion of the thruster subassembly, wherein the check valve is in an open position during a back stroke of the thruster subassembly so that the liquid medium flows freely through the thruste
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: April 17, 2012
    Inventor: Oleg Kotlyar
  • Publication number: 20120063924
    Abstract: Reciprocating fluid pumps include a plunger configured to expand and compress in a reciprocating action to pump fluid, and one or more magnets carried by the plunger. The one or more magnets may be used to impart a force on the plunger when the plunger expands and compresses in the reciprocating action within a pump body responsive to a magnetic field. Shuttle valves for shifting flow of pressurized fluid between at least two conduits include a spool movable within a valve body and one or more magnets carried by the spool. The one or more magnets may be used to impart a force on the spool responsive to a magnetic field. Reciprocating fluid pumps may include such shuttle valves. Methods include forming and using such pumps and shuttle valves.
    Type: Application
    Filed: September 9, 2011
    Publication date: March 15, 2012
    Inventors: Tom M. Simmons, John M. Simmons, David M. Simmons, Kenji Allen Kingsford
  • Patent number: 8109740
    Abstract: The present invention discloses a mounting structure of a linear compressor, comprising: a shell which is a hermetic space, a connection terminal for supplying power being fixed to one side of the shell; a main body frame installed in the shell, one end of a cylinder forming a compression space for compressing a refrigerant with a piston being fixed to the main body frame; and a motor cover, a linear motor comprised of an inner stator, an outer stator and a mover, for reciprocating the piston by a mutual electromagnetic force being fixed to the outer circumference of the cylinder, the outer stator being bolt-fastened between the main body frame and the motor cover. Here, the main body frame is left-right symmetric.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: February 7, 2012
    Assignee: LG Electronics Inc.
    Inventors: Kyoung-Seok Kang, Yangjun Kang, Min-Woo Lee
  • Publication number: 20120000208
    Abstract: In one embodiment, a compressor includes a moving assembly configured to compress a gas within a compression volume; a guide rod connected to the moving assembly which reciprocates axially with the moving assembly; and a bellows seal positioned between the moving assembly and a stationary housing which at least partially defining the compression volume. In another embodiment, a compressor includes a motor assembly configured to compress a gas within a compression volume, the motor assembly including: a stationary coil assembly; a moving assembly having at least one magnet, and a gap located between the stationary coil assembly and the moving assembly; wherein the moving assembly is configured to reciprocate axially with respect to the stationary coil assembly when electrical current is applied to the stationary coil assembly, and to change the width of the gap between the stationary coil assembly and the moving assembly so as to provide magnetic axial stiffness against motion of the moving assembly.
    Type: Application
    Filed: July 2, 2010
    Publication date: January 5, 2012
    Applicant: RAYTHEON COMPANY
    Inventors: Robert C. HON, Lowell A. BELLIS, Julian A. SHRAGO, Carl S. KIRKCONNELL
  • Publication number: 20110318193
    Abstract: The present invention discloses a linear compressor which makes it possible to adjust a variable rate of a cooling capacity. The linear compressor includes a fixed member having a compression space therein, a movable member linearly reciprocated in the fixed member to compress a refrigerant sucked into the compression space, one or more springs provided to elastically support the movable member in the motion direction of the movable member, a motor unit including a motor connected to the movable member to linearly reciprocate the movable member in the axial direction and a capacitor connected in series to the motor, and a motor control unit controlling an AC voltage applied to the motor to adjust a variable rate of a cooling capacity by the reciprocation of the movable member.
    Type: Application
    Filed: February 22, 2011
    Publication date: December 29, 2011
    Inventors: Jin Seok Hu, Shin Hyun Park, Young Geul Kim, Kyo Lyong Kang
  • Publication number: 20110302911
    Abstract: In at least some embodiments, an apparatus includes a hydraulic directional control manifold and a plurality of electric piezopumps. The apparatus also includes an electric piezopump controller that operates the plurality of electric piezopumps in varying combinations to provide generation and directional control of hydraulic power to linear hydraulic actuators using localized closed-loop hydraulic fluid.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 15, 2011
    Applicant: CAMERON INTERNATIONAL, INC.
    Inventors: Don Coonrod, Melvyn F. Whitby, Gerrit M. Kroesen, Ronald W. Webb, Mac M. Kennedy, Katherine Harvey, David Gonzalez, Thomas M. Bell, James W. Wilkirson
  • Publication number: 20110236236
    Abstract: Driving arrangement (11) for a pump, compressor or similar, adapted to provide alternating pressure in at least two chambers (27a, 27b, 27?, 27?), such as chambers of a pump or compressor, as result of a reciprocating movement of a bar element (23). The bar element is connected to two movable pressure chamber faces being pistons (21a, 21 b) or plungers having fluid connection to said chambers, which bar element (23) is reciprocally supported in a housing (19). The driving arrangement further comprises an electric motor (31) which is adapted to provide the reciprocating movement of the bar element (23). The bar element extends through the rotor (31b) of the electric motor (31). The electric motor is an electric rotary motor. The invention also relates to a pump assembly with a plurality of such driving arrangements.
    Type: Application
    Filed: December 8, 2009
    Publication date: September 29, 2011
    Inventors: Andreas Børre Larsen, Jan Martin Bendiksen, Trond Sjulstad, Tor Helge Brandsaeter, Ola Strand, Christian Petersen
  • Patent number: 7988430
    Abstract: A linear compressor is provided. The linear compressor may include a cylinder in which refrigerant flows in an axial direction, a piston that reciprocates within the cylinder so as to compress the refrigerant, and a linear motor that drives the piston. At least one of the cylinder or the piston may be sintering molded.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: August 2, 2011
    Assignee: LG Electronics Inc.
    Inventors: Kyoung-Seok Kang, Yang-Jun Kang, Min-Woo Lee, Chul-Gi Roh
  • Publication number: 20110160788
    Abstract: Systems and methods including a motor or electromagnets to control the movement of one or more pistons in a pumping chamber. The pumping chamber may include a pump inlet and a pump outlet in fluid communication with the pumping chamber. Surfaces on a piston or pumping chamber may include hydrodynamic bearing surfaces.
    Type: Application
    Filed: January 6, 2011
    Publication date: June 30, 2011
    Applicant: The Board of Regents of the University of Texas System
    Inventors: Thomas D. Pate, Raul G. Longoria, Richard Smalling, Jeffrey R. Gohean
  • Publication number: 20110116951
    Abstract: A reciprocatory fluid pump includes an armature assembly reciprocatably mounted in a housing and two leaf springs that are connected in parallel at two sides between the armature assembly and the base of the housing to constrain the reciprocations of the armature assembly to transverse displacements, enhancing the pumping efficiency and preventing friction during the reciprocating motion of the ferromagnetic member of the armature assembly, and therefore the reciprocatory fluid pump eliminates energy loss and generation of noises.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 19, 2011
    Inventor: Hsueh-Yu Lu
  • Publication number: 20110056235
    Abstract: A refrigerant circuit includes a linear electric compressor including a housing with a cylinder bore, a pair of end plates, a valve unit, a piston, an urging device for urging the piston, a coil generating electromagnetic force and a permanent magnet. The permanent magnet cooperates with the urging device and the coil to reciprocate the piston in the cylinder bore. The piston further includes a piston rod and the urging device is provided around the piston rod and a pair of piston heads integrally formed at opposite ends of the piston rod. The diameter of the piston rod is smaller than that of the piston head. The permanent magnet is provided on the piston head and the coil surrounds the piston head. The housing further includes a seat located between the pair of piston heads and the urging device is provided between the seat and each of the piston head.
    Type: Application
    Filed: September 1, 2010
    Publication date: March 10, 2011
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Nobuaki Hoshino, Masahiro Kawaguchi, Masaki Ota, Yoshio Kimoto, Toru Onishi
  • Publication number: 20110020156
    Abstract: A gaseous fluid pump having at least one cylinder having a wall defining an inner volume and containing a central axis. First and second pistons that both move along the central axis, wherein the first piston and second piston have similar mass. The first and second pistons are propelled by magnetic forces in an oscillating motion with a 180 degree phase difference between the first and second pistons.
    Type: Application
    Filed: July 20, 2010
    Publication date: January 27, 2011
    Inventors: Nicholas P. Van Brunt, John A. Kivisto, Theodore W. Jagger