With Muffler Acting On Pump Fluid Patents (Class 417/312)
  • Patent number: 11084354
    Abstract: A vehicle heater includes a heater housing (12), through which heating air to be heated can flow, with a heating air inlet area and with a heating air outlet area. A burner unit is arranged in the heater housing. A combustion air blower is arranged in the heater housing for feeding combustion air to the burner unit. A heat exchanger unit is arranged in the heater housing (12). Heating air flowing through the heater housing (12) can flow around the heat exchanger unit. A combustion air intake muffler (76), which is essentially arranged in the heater housing (12), is associated with the combustion air blower (46).
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: August 10, 2021
    Assignee: Eberspächer Climate Control Systems GmbH
    Inventors: Michael Humburg, Hans Jensen
  • Patent number: 11053943
    Abstract: A compressor unit includes a compressor, an electric motor which is lined with the compressor along the horizontal direction and drives the compressor, and a sound shielding member which reduces noise generated by the compressor. The sound shielding member has a shape of surrounding the compressor on a first side, a second side and a third side of the compressor and exposing the electric motor, the first and second sides being in a depth direction perpendicular to a lined direction in which the compressor and the electric motor are lined, and the third side being opposite to another side of the compressor where the electric motor is located in the lined direction.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: July 6, 2021
    Assignee: Kobe Steel, Ltd.
    Inventor: Kazuki Tsugihashi
  • Patent number: 11053631
    Abstract: Provided is a garment processing apparatus for compactly optimizing the arrangement space of a heat pump system. A heat pump module is modularized by integrally mounting a compressor, a condenser, and an evaporator in an integrated housing and is disposed at an upper portion of a tub.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: July 6, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Myoungjong Kim, Seongwoo An, Sangho Cho
  • Patent number: 11015588
    Abstract: A cylinder coupling structure of a compact air compressor includes a block provided with a suction valve and a discharge valve to be integrally formed with a suction muffler and a discharge muffler to block a front end of the cylinder, a tubular-shaped cylinder coupled to the block, a valve cover covering the valve assembly, at least one pressurized bolt coupling the valve cover and the block, a piston reciprocating inside the cylinder, a stator coupled to the block, a rotator located to rotate relatively with respect to the stator, a crank axis coupled to the rotator to rotate integrally with the rotator to be rotatable coaxially with the block, and a connecting rod, each of both ends thereof being connected to the crank axis and the piston, respectively.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: May 25, 2021
    Assignee: NEW MOTECH CO., LTD.
    Inventors: Jeong Cheol Jang, Jong Hyuk Kim, Jin Sun Park
  • Patent number: 10927526
    Abstract: A work vehicle has a chassis, and a member connected to the chassis for movement with respect to the chassis. An actuator is connected to the chassis and to the member to move the member with respect to the chassis. A hydraulic circuit is connected to the actuator and a pump pressurizes fluid in the hydraulic circuit. An adjustable quarter wave tuner is connected to the hydraulic circuit. The adjustable quarter wave tuner has a length that is adjustable within a range of lengths to thereby reduce noise caused by the pump across a corresponding range of frequencies. In some embodiments, the member is a linear actuator, such as a hydraulic cylinder. In other embodiments, the member is a rotary actuator, such as a hydraulic motor.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: February 23, 2021
    Assignee: DEERE & COMPANY
    Inventor: Peter E. Bingham
  • Patent number: 10907636
    Abstract: Provided is a package-type compressor that can improve cooling performance for cooling a body unit and a control panel. The package-type compressor includes: a cooling fan accommodated in a fan duct to induce a flow of cooling air taken in through inlets and discharged through an outlet; a machine chamber that causes the cooling air taken in at the inlet to flow along a body unit; and a cooling duct that causes the cooling air taken in at the inlet to flow along the control panel. A center position of the suction port of the fan duct is offset away from the inlet and toward the inlet with respect to a center position of a drive shaft of a motor of the body unit.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: February 2, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kosuke Sadakata, Toshikazu Harashima, Hitoshi Nishimura, Kentaro Yamamoto, Masahiko Takano
  • Patent number: 10876774
    Abstract: An accumulator to separates gas refrigerant and liquid refrigerant. The accumulator includes a casing, and a resonance-suppressing member installed in an internal space of the casing. The casing has a cylinder portion having a cylinder axis extending along a vertical direction, an upper lid portion linked with an upper end of the cylinder portion, and a lower lid portion linked with a lower end of the cylinder portion. The resonance-suppressing member is installed at a height position that, in a case in which a standing wave of pressure having a first antinode, a node, and a second antinode from the upper lid portion toward the lower lid portion is generated in the internal space, is near a height position of at least one of the first antinode and the second antinode.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: December 29, 2020
    Assignee: Daikin Industries, Ltd.
    Inventor: Hikaru Wada
  • Patent number: 10865784
    Abstract: A linear compressor includes a frame including a frame body, a frame head that extends from a front end of the frame body, a flange groove defined in the frame head, and a body hole that passes through the frame body; a cylinder including a cylinder body inserted into the body hole, a cylinder flange, and a cylinder head provided on a front end of the cylinder flange; and a lock ring press-fitted to be coupled to the flange groove and provided in a space defined between the cylinder head and an inner circumferential surface of the flange groove.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: December 15, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyunsoo Kim, Geonwoo Kim, Chulgi Roh
  • Patent number: 10794375
    Abstract: A noise mitigation boot that can be installed on or integrated into a miniature diaphragm pump to reduce the overall noise and improve sound quality during operation. The diaphragm pump includes a housing having first and second ports and an interior chamber, a pumping diaphragm disposed in the interior chamber and dividing the interior chamber into a pumping chamber and a backside chamber, a motor for reciprocating the pumping diaphragm for pumping air into and out of the pumping chamber, and flow passages connecting the pumping chamber to the first and second ports. The first port is configured for attachment to a flow line and the second port opens to an exterior surface of the housing. The noise mitigation boot has a muffler wall overlying the exterior surface of the housing. The muffler wall has formed therein a passage extending from the second port to the backside chamber for effecting fluid communication between the second port and the backside chamber.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: October 6, 2020
    Assignee: Parker-Hannifin Corporation
    Inventors: Scott Snyder, Leonard Prais, Aman Sharafi
  • Patent number: 10753350
    Abstract: A linear compressor is provided that may include a shell having a cylindrical shape, a compressor main body inserted into the shell, a first shell cover coupled to a rear end of the shell, a first support coupled to a front end of the compressor main body that supports the front end of the compressor main body, and a second support that couples a rear end of the compressor main body to the first shell cover and supports the rear end of the compressor main body. The first support may include a support head coupled to a center of the front end of the compressor main body, and a pair of dampers having both ends respectively coupled to the support head and an inner circumferential surface of the shell.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: August 25, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongkyun Ha, Chulgi Roh, Sangeun Bae, Sangmin Lee, Kiil Hwang
  • Patent number: 10724522
    Abstract: A screw compressor comprising a compressor element with a housing in which two helical rotors are mounted on bearings by their shafts, and a gearbox—with a housing with a mounting surface that is built onto a mounting surface of the housing of the compressor element, and which is coupled in a torque-transmitting way to a shaft of at least one of the aforementioned rotors, whereby the compressor element is provided with an oil circuit with an input and an output for oil and a cooling jacket with an input and output for a coolant, wherein the aforementioned inputs and outputs for the oil and for the coolant are located in the aforementioned mounting surface of the housing of the compressor element, whereby these inputs and outputs connect to channels for the respective supply and removal of the oil and the coolant.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: July 28, 2020
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventors: Simon Peter G. De Bock, Johan Nachtergaele
  • Patent number: 10648471
    Abstract: A scroll compressor is provided that may include a casing that contains oil in a lower space thereof; a drive motor provided at a position spaced from an upper end of the casing by a predetermined gap, such that an upper space is formed in the casing; a rotational shaft coupled to a rotor of the drive motor, and having an oil supply passage to guide the oil contained in the casing to an upper side of the drive motor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber by being engaged with the fixed wrap, and a rotational shaft coupling portion to couple the rotational shaft to the orbiting scroll in a penetrating manner; and an oil collection unit including an oil separator provided at the upper space of the casing, and an oil guide having a first end that communicates with the oil separator and a second end that communicates wit
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: May 12, 2020
    Assignee: LG Electronics Inc.
    Inventors: Taekyoung Kim, Kangwook Lee, Cheolhwan Kim, Byeongchul Lee
  • Patent number: 10544782
    Abstract: A hermetic compressor includes, inside hermetic container (1), electric motor element (2), compression element (3) driven by electric motor element (2), and lubricating oil (7) for lubricating compression element (3). The hermetic compressor further includes vibration damping member (16) having one part fixed to hermetic container (1) and another part being free end part (18). Structurally, a natural frequency of vibration damping member (16) is in substantial conformity with a natural frequency of hermetic container (1).
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: January 28, 2020
    Assignee: PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
    Inventors: Masanori Kobayashi, Kazuhiro Yokota, Terumasa Ide, Kenji Kinjo
  • Patent number: 10533541
    Abstract: A hydraulic drive device includes a running surface having a pair of arcuate kidney ports formed thereon. The running surface also includes a plurality of pressure gradient grooves formed on the running surface, each pressure gradient groove having a proximal end adjacent to a respective one of the ends of one of the kidney ports and a distal end. The distal end of one of the pressure gradient grooves associated with one kidney port may overlap the distal end of a pressure gradient groove associated with the other kidney port. The distal end of at least one of the pressure gradient grooves is located outside the circumference of a pitch circle that passes through the center of each kidney port. The distal end of at least one of the other pressure gradient grooves is located inside the pitch circle circumference.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: January 14, 2020
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Nathan W. Bonny
  • Patent number: 10520954
    Abstract: An electronics for active cancellation of a pulsating flow with a flow signal noise reference. The electronics includes a signal processor configured to receive a flow signal from a flow sensor that is configured to measure a flow rate of the pulsating flow, generate a flow rate signal and a noise reference signal from the flow signal, and generate a cancelling signal from the noise reference signal. The electronics also includes a controller coupled to the signal processor and configured to determine a flow rate control signal. The electronics includes a signal generator communicatively coupled to the signal processor and the controller and configured to receive the flow rate control signal, generate a valve signal based on the flow rate control signal and the cancelling signal, and provide the valve signal to a valve to control flow rate and attenuate pulses of the pulsating flow of the fluid.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: December 31, 2019
    Assignee: NORGREN LIMITED
    Inventor: Mark Richard Grubb
  • Patent number: 10502198
    Abstract: Acoustic attenuating device for compressors which includes a hollow body having at least one input port, at least one output channel, at least one output port disposed in the at least one output channel, an intermediate body dividing the hollow body into two acoustic chambers, and a connection channel communicating the two acoustic chambers. Said connection channel includes two sub-channels, wherein one of the two sub-channels accommodates, at least partially, the output channel and the other one of the two sub-channels conforms fluid communication between the two acoustic chambers. The acoustic attenuating device further includes at least one blocker disposed between the outer side of the output channel and the inner side of the sub-channel which accommodates the output channel, wherein said blocker is capable of precluding flow between the two acoustic chambers, thereby reducing the amount of lubricating oil which flows out from the compressor into the cooling system.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: December 10, 2019
    Assignee: Embraco—Industria De Compressores E Solucoes Em Refrigeracao Ltda.
    Inventors: Cristiano Stumpf, Conrado Koppen, Roque Tadeu Miranda
  • Patent number: 10436184
    Abstract: A hydraulic device 1 comprises a first member 2 movable relative to a second member 5. In such a device the risk of cavitation noise and cavitation damage should be minimized. To this end said first member 2 having a pressure chamber 3 opening in a face 7 of said first member 2 which face 7 is in contact with a contact face 6 of said second member 5, said second member 5 having a low pressure area 9, wherein a throttling flow path is provided in a groove 11 connecting said pressure chamber 3 and said low pressure area 9 when pressure chamber 3 is approaching said low pressure area 9, characterized in that a throttling resistance of said groove 11 increases in a direction of the flow through said groove 11.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: October 8, 2019
    Assignee: DANFOSS A/S
    Inventor: Sveinn Porarinsson
  • Patent number: 10408526
    Abstract: An elongated non-metal, corrosion resistant compressor mounting base plate structure useful for an appliance such as a refrigerator unit including (I) a base plate having a top surface and a bottom surface, wherein the base plate is adapted for receiving a compressor on the top surface of the base plate; (II) a means for receiving and removably affixing a compressor to the top surface of the base plate; and (III) a reinforcement means integral with said base plate; wherein said reinforcement means includes, for example, at least two elongated transverse tubular reinforcement segments integral with the base plate segment, one transverse tubular reinforcement segment at each of the transverse ends of the base plate segment; said reinforcement means being adapted for providing the base plate with sufficient strength and rigidity such that the base plate can withstand the deformation load from the weight of the compressor.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: September 10, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Ashishkumar S. Lokhande, Onkareshwar V. Bijjargi, Nilesh R. Tawde, Gulab N. Malunjkar
  • Patent number: 10393142
    Abstract: A blower assembly including a motor, an impeller and a volute that is configured such that an inlet chamber of the volute and an outlet chamber of the volute are divided from one another by an airtight membrane and the membrane is configured to allow the transmission of pressure waves between the inlet and outlet chambers.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: August 27, 2019
    Assignee: ResMed Pty Ltd
    Inventors: Robert Henry Frater, Hamish Alexander Urquhart, Dmitri Anatolievich Doudkine, Barton John Kenyon
  • Patent number: 10359225
    Abstract: A mounting arrangement secures a refrigerator compressor to a support base member through a plurality of elastomeric mounts secured on pin elements with retainers. The mounts include head portions which extend through openings provided in an elongated plate fixed to the compressor. The mounts are specifically formed with a rounded bottom to pre-load the mounting arrangement and prevent vibration transmission through cores of the mounts. In addition, each mount includes a plurality of vertically spaced rings which provide shock protection against a large impact force by deflecting and potentially contacting each other, while normal vertical isolation occurs by deflection of an uppermost one of the rings. The mounts are formed with various undercuts which allow the mounts to be optimized for the mass and operational frequency of the compressor.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: July 23, 2019
    Assignee: Whirlpool Corporation
    Inventors: Daniel J. Lesko, Kaveh Esmael
  • Patent number: 10215456
    Abstract: In order to supply a refrigerant to multiple-stage heat receivers equally while saving space, a refrigerant distribution device to distribute a refrigerant supplied from the upper stream according to the present invention includes a main body including a side wall part, an upper face part and a bottom face part, an upstream pipe provided on the upper face part in a manner communicating with an inside of the main body, a downstream pipe provided in a state partially inserted inside the main body via an under face hole part provided in the bottom face part, a tributary pipe provided in the side wall part or the bottom face part in a manner communicating with the inside of the main body, and a refrigerant direction changing means provided between the upstream pipe and the downstream pipe.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: February 26, 2019
    Assignees: NEC Corporation, NEC Platforms, Ltd.
    Inventors: Arihiro Matsunaga, Masaki Chiba, Minoru Yoshikawa, Tadao Hosaka, Shunsuke Fujii, Akira Shoujiguchi, Kenichi Inaba, Masanori Sato
  • Patent number: 10214022
    Abstract: A diaphragm pump includes an inflow chamber and an outflow chamber. The inflow chamber is provided with an inflow valve seat. An inflow valve that prevents backflow of a liquid is disposed against the inflow valve seat. The outflow chamber is provided with an outflow valve seat. An outflow valve that prevents backflow of a liquid is disposed against the outflow valve seat. The diaphragm pump also includes an inflow-valve presser that presses the inflow valve against the inflow valve seat, and an outflow-valve presser that presses the outflow valve against the outflow valve seat. Each of the inflow valve and the outflow valve is defined by an elastically deformable member. Each of the inflow valve seat and the outflow valve seat includes a surface at least a portion of which is a curved surface.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: February 26, 2019
    Assignee: ROLAND DG CORPORATION
    Inventor: Hidetoshi Atsumi
  • Patent number: 10151308
    Abstract: A reciprocating compressor is provided. The reciprocating compressor may include a cylinder having a compression space, a piston inserted into the cylinder to define the compression space while being reciprocated, the piston having a suction passage to communicate with the compression space, a gas bearing having at least one bearing hole that passes through the cylinder, so that a refrigerant gas may be injected between the cylinder and the piston to support the piston with respect to the cylinder, and a flow resister disposed at an outer circumferential surface of the cylinder or at one side of the cylinder to restrict a flow of the refrigerant gas flowing through or toward the at least one bearing hole.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: December 11, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Kichul Choi, Kwangwoon Ahn, Donghan Kim
  • Patent number: 10047733
    Abstract: A cylinder block (1) for a compressor has a central opening (3) for accommodating a drive shaft of a drive unit and defines a central axis of the cylinder block (1) with a plurality of cylinder bores (2) arranged around the central opening and each of the cylinder bores (2) adapted for accommodating a piston (14).The cylinder block (1) also has at least one stop (10) on a drive side of the cylinder block (1) with the stop (10) arranged within a triangular area which is delimited by the central opening (3) and the two adjacent cylinder bores (2).
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: August 14, 2018
    Assignee: Valeo Japan Co., Ltd.
    Inventors: Jakub Lounek, Petr Kolman
  • Patent number: 9995291
    Abstract: A sealed compressor of the present invention comprises an electric component (111); a compression component (113) actuated by the electric component (111); and a sealed container (101) which accommodates therein the electric component (111) and the compression component (113), and stores lubricating oil therein; wherein the compression component (113) includes a crankshaft (135) including a main shaft (137) and an eccentric shaft (139); a cylinder block (117) including a bearing unit (123) supporting the main shaft (137) such that the main shaft is rotatable, and a cylinder (121) defining a compression chamber (119); and a suction muffler (131) through which a refrigerant gas (115) flows from an interior of the sealed container (101) to an interior of the compression chamber (119); a separating wall (165) is provided between the suction muffler (131) and the electric component (111); a first space (159) is formed between the suction muffler (131) and the separating wall (165); and a second space (163) is form
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: June 12, 2018
    Assignee: PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
    Inventors: Kenji Kinjo, Hiromitsu Iwata, Akihiko Kubota
  • Patent number: 9841024
    Abstract: A compressor includes compression and drive mechanisms disposed in a casing having a cylindrical member. The compression mechanism includes a cylinder main body, an end surface member attached to the cylinder main body, a muffler main body attached to the end surface member, an intake hole communicating with the compression chamber and extending in a direction crossing the drive shaft, and a circular hole located radially outside the compression chamber and extending in a direction parallel to the drive shaft. The circular hole opens to a space inside the casing. At least a part of the circular hole is located within an area defined by extending the intake hole in a plan view. A method of producing a compressor includes inserting a positioning pin into the circular hole of the compression mechanism and pressing an inlet tube into the intake hole from outside of the cylindrical member.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: December 12, 2017
    Assignee: Daikin Industries, Ltd.
    Inventors: Takeo Hayashi, Yasuto Hiraoka, Seio Miyata, Naoto Sekida, Yoshinobu Ishiodori, Kouji Tanaka
  • Patent number: 9784261
    Abstract: Provided is a gasket (30), which is used in a motor-driven compressor including an inverter housing, including a flat core of metal (31) and an elastic foamed material (32) so disposed as to cover both surfaces of the core (31), and the gasket (30) has embossed recesses and projections (33) with predetermined shapes. It is possible to enhance sealing performance to seal the inverter housing by using this gasket (30). A motor-driven compressor using this gasket (30) enhances vibration prevention.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: October 10, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takayuki Hagita, Shinichi Takahashi, Takeshi Hirano, Noriaki Arashi, Takayuki Watanabe
  • Patent number: 9709541
    Abstract: A gas processing device includes a sample inlet defining a gas flow path into a housing, and a pump and a noise dampening device disposed in the housing. The noise dampening device includes an inlet chamber, an outlet chamber, and an elastomeric membrane interposed between and fluidly isolating the inlet chamber and the outlet chamber. The inlet chamber is interposed between the sample inlet and the pump inlet, and the outlet chamber communicates with the pump outlet.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: July 18, 2017
    Assignee: Research Triangle Institute
    Inventors: Charles E. Rodes, J. Randall Newsome
  • Patent number: 9677557
    Abstract: A sleeping system is provided, including an air bladder and a diaphragm pump. The diaphragm pump communicates with the air bladder. The diaphragm pump includes a base, a first inlet, a first outlet, a first noise-eliminating foam, a pump body and a cover. The first inlet is formed on the base. The first outlet is formed on the base. The first noise-eliminating foam is disposed in the base. The cover is connected to the base and covers the pump body, wherein air flow passes through the first inlet into the base and travels through the pump body and the first noise-eliminating foam, and leaves the diaphragm pump through the first outlet to be infused into the air bladder.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: June 13, 2017
    Inventor: Hao Hsu
  • Patent number: 9657726
    Abstract: A mounting member for a hydraulic pump or other rotating kit for a hydraulic drive device includes a running surface having a pair of arcuate kidney ports formed thereon. The running surface also includes a plurality of pressure gradient grooves formed on the running surface, each pressure gradient groove having a proximal end adjacent to a respective one of the ends of one of the kidney ports and a distal end. The distal end of one of the pressure gradient grooves associated with one kidney port may overlap the distal end of a pressure gradient groove associated with the other kidney port. The distal end of at least one of the pressure gradient grooves is located outside the circumference of a pitch circle that passes through the center of each of the kidney ports. The distal end of at least one of the other pressure gradient grooves is located inside the circumference of the pitch circle.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: May 23, 2017
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Nathan W. Bonny
  • Patent number: 9518680
    Abstract: A valve assembly may include a valve plate having an inlet hole through which working fluid passes from a vacuum muffler, a first discharge hole through which working fluid discharged from a cylinder passes, a second discharge hole through which the working fluid from the first discharge hole passes, and a pulsation and/or noise reducing passage through which the working fluid from the second discharge hole flows; a discharge valve at or in the valve plate configured to open and/or close the first discharge hole; a valve sheet having a first hole therein communicating with the first discharge hole and a second hole therein at an outlet of the pulsation and/or noise reducing passage; and a vacuum valve in the valve sheet configured to open and/or close the inlet hole.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: December 13, 2016
    Assignee: DONGBU DAEWOO ELECTRONICS CORPORATION
    Inventor: Won Woong Lee
  • Patent number: 9431866
    Abstract: A motor having an improved structure that prevents infiltration of moisture into the motor and a washing machine having the same. A washing machine includes a body, a tub disposed in the body, a drum rotatably disposed in the tub, and a motor including a stator coupled to a rear surface of the tub and a rotor rotatably disposed inside the stator. The stator includes a stator core, a first insulator and a second insulator to cover both ends of the stator core, and at least one moisture infiltration prevention member disposed between the first insulator and the second insulator to prevent infiltration of moisture into the stator core.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: August 30, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myung Bae Bang, Byung Ryel In, Woong Hwang
  • Patent number: 9371784
    Abstract: A dual fuel system for an engine is disclosed. The dual fuel system may have a first fuel supply providing a first fuel to the engine, and a second fuel supply providing a second fuel. The dual fuel system may also have a regulator configured to pass the second fuel from the second fuel supply to the engine, with the regulator also in fluid communication with the first fuel supply. The dual fuel system may further have a damper in fluid communication with the first fuel supply and an output of the regulator.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: June 21, 2016
    Assignee: Caterpillar Inc.
    Inventors: Joshua W. Steffen, Dana R. Coldren
  • Patent number: 9366258
    Abstract: A compressor has a housing which includes a compression mechanism for compressing and then discharging sucked air, and an intercooler core for cooling the discharged air and mitigating a pressure fluctuation thereof. The housing has a cylinder block integrally formed so as to include a rotor chamber which accommodates the compression mechanism, a silencing and cooling chamber which accommodates the intercooler core, and a discharge hole which provides communication between the rotor chamber and the silencing and cooling chamber.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: June 14, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSKOKKI
    Inventors: Fumihiro Suzuki, Masato Sowa, Katsutoshi Shiromaru
  • Patent number: 9200627
    Abstract: The present invention refers to a noise muffler for refrigeration compressors capable of dampening noise generated by the intermittent flow of the compressor and at the same time a muffler that reduces the loss of load in the refrigeration system.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: December 1, 2015
    Assignee: Whirlpool S.A.
    Inventor: Fabian Fagotti
  • Patent number: 9145879
    Abstract: The present invention refers to an acoustic filter for reciprocating compressor and, in special, a suction acoustic filter containing at least one inlet pipeline (21), at least one outlet pipeline (22), and at least one intermediate pipeline (42). Said acoustic filter (1) comprises at least two horizontal chambers (5, 6), wherein said chambers are interconnected by an intermediate pipeline (42), which has a superior portion (421) with a length that is equivalent to approximately 75% to 98% of the height of the first horizontal chamber (5) and an inferior portion (422) with a length that is equivalent to approximately 45% to 80% of the height of the second horizontal chamber (6).
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: September 29, 2015
    Assignee: Whirlpool S.A.
    Inventors: Moacir Pirovano, Emerson Moreira, Tadeu Tonheiro Rodrigues, José Nilton Fonseca Junior
  • Patent number: 9099074
    Abstract: Acoustic insulation comprising tuned resonant absorbers to absorb sound energy and prevent it from being emitted and a method of installation of the acoustic insulation. The acoustic insulation is preferably placed or sprayed by a thermal spray process. The resonant absorbers are strategically placed in the placed or thermally sprayed material to maximize sound absorption. Discrete mass absorbers may be sealed or left open.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: August 4, 2015
    Inventors: Peter A. Lucon, Milan Ivosevic, Scott L. Coguill, Lawrence C. Farrar
  • Patent number: 9004879
    Abstract: A discrete, heat-insulating exhaust muffler device (8) and a refrigeration compressor using the exhaust muffler device are provided. The exhaust muffler device (8) includes a metal cavity body defining cavities (9, 10), and intake pipe and exhaust pipe installation holes respectively arranged on the cavities (9, 10). Non-metallic shell bodies (17, 18) are further arranged outside the cavities (9, 10), and the exhaust muffler device (8) is disposed outside cylinder blocks (14) and is separated from the cylinder blocks (14). By disposing a layer of the non-metal shell bodies (17, 18) outside the metal cavity body (9, 10), thermal contact between exhaust gas and gas inside a compressor can be reduced owing to a better heat-insulating effect of the non-metallic material, thereby reducing heat transfer from the metal cavity body (9, 10) to the outside. The gas inside the compressor can have a relatively lower temperature, and the efficiency of the compressor is improved.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: April 14, 2015
    Assignee: Huangshi Dongbei Electrical Appliance Co., Ltd.
    Inventors: Baichang Yang, Lijian Cao, Jingxiong Dai, Renshu He, Younan Wang
  • Publication number: 20150089999
    Abstract: A pulsation and particle suppressing continuous air flow system for air sampling instruments, particularly particle counters. An air pump occupies a portion of a sealed vacuum housing, with the other portion of the housing forming a surge chamber used to damp surges as the air pump attempts to pump air towards an air outflow port through an outflow pipe. The unoccupied volume of the surge chamber dampens or dilutes the surges at an air inflow port of the housing that is associated with an air sampling instrument, such as a particle counter. The air outflow port is associated with a filter for trapping particles originating inside of the air pump and associated motor while the interior of the housing itself traps particles originating outside of the air pump and motor.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 2, 2015
    Inventors: Gerald A. Szpak, Thomas L. Pottberg
  • Patent number: 8992186
    Abstract: A refrigeration compressor is provided and may include a shell carrying a suction-inlet tube having an outlet nozzle opened to the interior of the shell and a cylinder block to which is mounted a suction muffler that incorporates an admission tube provided with an inlet nozzle. The inlet nozzle of the admission tube may be disposed adjacent to the outlet nozzle of the suction-inlet tube. The inlet nozzle may admit under at least one of the conditions of underpressure in its interior or deflection of the refrigerant-fluid flow in the interior of the shell the gaseous phase and may direct the liquid phase to a region of the shell external to the inlet nozzle.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: March 31, 2015
    Assignees: Emerson Climate Technologies, Inc., Whirlpool S.A.
    Inventors: Marcio Silveira, Moacir Pirovano, Cleber Knies, Ernest Bergman
  • Patent number: 8961150
    Abstract: An air exchange fan, includes: a frame provided with an opening, a helicoid housing with an air suction inlet disposed in the frame, an air blower disposed in the helicoid housing, and, a circuit board box mounted at the air suction inlet side, wherein a silencing plate is mounted above the outer peripheral of the air suction inlet, the silencing plate has a streamlining structure formed by outwardly expanding from the air suction inlet in an axial direction of a rotation axis of the air blower, the rotation axis of which serving as the center, within a range that is from a tongue of the helicoid housing to a location with a 90 degrees angled from the tongue in a direction opposing to the rotation direction of the air blower, and the silencing plate has a curved chamfered shape which mates with the peripheral shape of the air suction inlet.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: February 24, 2015
    Assignees: Panasonic Ecology Systems Guangdong Co., Ltd., Panasonic Corporation
    Inventors: Jingtao Yang, Qianhao Tan, Yannong Wu, Pingting Yang
  • Publication number: 20150030473
    Abstract: A compressor assembly having a high velocity muffler system which produces a particle-free compressor pump feed while reducing noise output from the compressor assembly during compressing operations. The high velocity muffler system is maintenance-free and comprises an inertia filter. The compressor assembly uses a method for producing a compressor pump feed and reducing noise during compressing operations by processing a gas through the high velocity muffler system which has an inertia filter and a muffler chamber to produce a compressor pump feed which can be compressed by a pump assembly.
    Type: Application
    Filed: October 15, 2014
    Publication date: January 29, 2015
    Applicant: BLACK & DECKER INC.
    Inventors: Mark W. Wood, Stephen J. Vos, Scott D. Craig, Gary D. White
  • Publication number: 20150023812
    Abstract: The muffler has a muffler chamber formed in a rear housing, an inlet channel that provides communication between the discharge chamber and the muffler chamber, and an outlet channel that provides communication between the muffler chamber and the outlet port. The muffler chamber has a first end surface positioned on one end side of the muffler chamber, a second end surface positioned on the other end side of the muffler chamber, and an inner peripheral surface having a cylindrical shape that is positioned between the first end surface and the second end surface and extends from the discharge chamber toward the other end side. The muffler chamber is positioned between an annular wall and an outer peripheral wall. The inlet channel opens in the first end surface. The outlet channel opens in the inner peripheral surface at a position spaced apart from the second end surface.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 22, 2015
    Inventors: Masakazu OBAYASHI, Osamu HIRAMATSU, Hiroyuki NAKAIMA, Yasushi SUZUKI
  • Publication number: 20150023811
    Abstract: A compressor includes a compression mechanism drawing in, compressing and discharging fluid and a housing accommodating therein the compression mechanism. The housing has therein a discharge chamber into which the fluid compressed by the compression mechanism is discharged. A silencing and cooling device is provided in the discharge chamber to cool the fluid discharged in the discharge chamber and reduce pressure fluctuation. A dispersion wall is provided in the discharge chamber on downstream side of the discharge chamber that is opposite from an inflow port with respect to flowing direction of the discharged fluid. The dispersion wall is disposed to cover a part of the silencing and cooling device and cover at least a part of the inflow port.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 22, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kazuho YAMADA, Hironao YOKOI, Masato SOWA, Katsutoshi SHIROMARU, Fumihiro SUZUKI
  • Patent number: 8926293
    Abstract: Disclosed is a motor-pump assembly (1) for a brake actuating device of a motor vehicle brake system with a pneumatic brake booster. An electric motor (3) drives a double diaphragm pump (2) with two working diaphragms (4) which are located opposite one another. Air expelled from the working spaces (7) is directed into an interior space (22) surrounding a crank drive (8) of the pump housing (5). An air outlet unit (13) permits low-noise expulsion of the air from the interior space 22 by deflecting the air. In order to make available a low-noise, cost-reduced motor-pump assembly the eccentrics (9) each have an unbalance weight (25) integrally molded onto the eccentric (9).
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: January 6, 2015
    Assignee: Continental Teves AG & Co. OHG
    Inventors: Manfred Rüffer, Jens Bacher, Heinrich Kreh, Lazar Milisic, Karlheinz Seitz, Harald König, Michael Kollers, Jose Gonzalez, Michael Jürging, Marcel Niepenberg, Stephan Krebs
  • Publication number: 20150004014
    Abstract: A linear compressor is provided. The linear compressor may include a shell including a refrigerant inlet, a cylinder provided within the shell, a piston that reciprocates within the cylinder, and a suction muffler provided movable together with the piston. The suction muffler may include a muffler main body that defines a refrigerant passage, a main body insertion portion press-fitted into the muffler main body, and a piston insertion portion press-fitted into the muffler main body to extend into the piston. The piston insertion portion may correspond to the main body insertion portion in configuration.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Inventors: Jookon KIM, Chulgi ROH, Sungtaek WOO, Sangsub JEONG, Kyoungseok KANG, Wonhyun JUNG
  • Publication number: 20150004015
    Abstract: In order to further improve the sound damping in a refrigerant compressor comprising a common housing, a screw-type compressor which is provided in the common housing and has a compressor housing that is formed as part of the common housing and in which there is arranged at least one screw rotor boring, at least one screw rotor that is arranged in the screw rotor boring such as to be rotatable about a rotational axis, a suction-side bearing unit for the screw rotor that is arranged on the compressor housing, at least one pressure-side bearing unit for the screw rotor that is arranged on the compressor housing and a housing window for compressed refrigerant that is provided on the compressor housing, and a first sound absorber unit which is arranged in the common housing, it is proposed that the first sound absorber unit be arranged adjacent the housing window, and that the sound absorber unit comprise at least one chamber which is located between an inlet opening and an outlet opening and which widens out rel
    Type: Application
    Filed: September 18, 2014
    Publication date: January 1, 2015
    Inventors: Dominic Kienzle, Ashraf Agha, Stephan Roelke
  • Publication number: 20140322040
    Abstract: A muffler for a compressor and a compressor having the same are provided in which a suction noise device and a discharge noise device may integrally formed to reduce the number of components of a suction side muffler and a discharge side muffler so as to reduce leakage of refrigerant generated at an assembled portion of the muffler, and to reduce the length of a suction passage and a discharge passage. Such a division between the suction noise device and the discharge noise device may prevent discharged refrigerant from unintentionally heating suctioned refrigerant, which may reduce suction loss. The formation of the suction noise device and the discharge noise device using a plastic material may reduce fabricating costs, and the structures of the suction side noise space and the discharge side noise space may be simplified and noise removal effects may be improved, reducing an overall size of the muffler and improving noise effects.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 30, 2014
    Applicant: LG Electronics Inc.
    Inventor: Jaeho CHO
  • Patent number: 8858194
    Abstract: A hermetic compressor, comprises: a hermetic shell (1); a cylinder block (2) defining, a shell portion (Ia) and a compression cylinder (3) having an end (3a) opened to the exterior of the hermetic shell (1) and closed by a valve plate (5); a head (6) affixed to the cylinder block (2), over the valve plate (5) so as to define, with the latter, at least one discharge chamber (10). The cylinder block (2) incorporates a tubular projection (20) surrounding the valve plate (5) and at least part of the head (6). An outer cover (30) is hermetically affixed to the tubular projection (20) for defining therewith a discharge plenum (31) in fluid communication with the discharge chamber (10), the tubular projection (20) or the outer cover (30) being provided with a refrigerant gas outlet (40) opened to the exterior of the hermetic shell (1).
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: October 14, 2014
    Assignee: Whirlpool S.A.
    Inventors: Emerson Moreira, Fabian Fagotti, Gustavo Cardoso Weber, Milton Wetzel Pereira, Ricardo Alexandre Maciel
  • Patent number: 8844429
    Abstract: A beverage maker, such as a pump espresso machine, comprises a noise attenuator reducing pump noise. The noise attenuator has a housing with an inlet chamber receiving inlet flow from an inlet port, the inlet chamber having compliant walls permitting volumetric expansion. An outlet chamber in the noise attenuator housing has an outlet port and spheroidal walls. A flow-restrictor is disposed between the inlet and outlet chambers. An elastomeric insert in the housing forms the inlet chamber and at least part of the outlet chamber.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: September 30, 2014
    Assignee: G.E.W. International Corporation Limited
    Inventor: Thomas Chung Lik Yip