公开(公告)号：US12060875B2

公开(公告)日：2024-08-13

申请号：US17522896

申请日：2021-11-09

申请人： PDC MACHINES INC.

发明人： Guy Babbitt ,  Chris Turner ,  Bryce Whitehill ,  Michael Sprengel ,  Noah Schaich ,  Kyle Palmiscno ,  Alex Beckerman ,  Kareem Afzal ,  Carl T. Johnson

IPC分类号： F04B45/053 ,  F04B39/02 ,  F04B39/06 ,  F04B39/16 ,  F04B43/073 ,  F04B45/04 ,  F04B49/22 ,  F04B53/06 ,  F04B53/14 ,  F04B53/08

CPC分类号： F04B45/053 ,  F04B39/02 ,  F04B39/06 ,  F04B39/16 ,  F04B43/073 ,  F04B45/043 ,  F04B45/0533 ,  F04B45/0536 ,  F04B49/22 ,  F04B53/06 ,  F04B53/14 ,  F04B53/08 ,  F04B2201/0201 ,  F04B2201/0202 ,  F04B2205/05

摘要： Devices and methods for operating a diaphragm compressor. Embodiments of the present disclosure comprise an oil piston being driven to pressurize work oil against the diaphragm of the compressor. In embodiments, an injection pump provides a supplemental flow of work oil in the region of pressurized fluid, and such pump may be part of an actively controlled system. In embodiments, a pressure relief valve vents an overpump flow of work oil, and such valve may be variable. Embodiments provide feedback and control mechanisms, including control of the injection pump and the relief valve.

公开(公告)号：US12049888B2

公开(公告)日：2024-07-30

申请号：US18090301

申请日：2022-12-28

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Yousuke Ohnishi ,  Mikio Kajiwara ,  Youhei Nishide ,  Naoto Tomioka ,  Masaaki Adachi ,  Daisuke Okamoto ,  Hitoshi Ueda

IPC分类号： F04B53/08 ,  F04B35/04 ,  F04B39/02 ,  F04C29/02 ,  F04C29/04

CPC分类号： F04B53/08 ,  F04B35/04 ,  F04B39/0238 ,  F04B39/0246 ,  F04B39/0253 ,  F04C29/026 ,  F04C29/045

摘要： A compressor includes a casing having a cylindrical barrel, a compression mechanism, and an electric motor. The electric motor has a tubular stator, and a rotor disposed inside the stator. The stator has a back yoke forming an outer peripheral portion of the stator, a plurality of teeth extending radially inward, and slots. A fluid passage extends between an outer peripheral surface of the stator and an inner peripheral surface of the barrel. The fluid passage has a plurality of wide portions arranged in a circumferential direction of the stator, and a narrow portion provided between adjacent ones of the wide portions. The narrow portion has a smaller radial width than each of the wide portions. Each wide portion is provided in the outer peripheral surface of the stator and between a core cut having a recessed groove shape between the slots and the inner peripheral surface of the barrel.

公开(公告)号：US11965624B2

公开(公告)日：2024-04-23

申请号：US17238633

申请日：2021-04-23

申请人： L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

发明人： Guillaume Petitpas ,  Cyril Benistand-Hector

IPC分类号： F17C5/04 ,  B67D7/36 ,  B67D7/54 ,  B67D7/78 ,  F04B37/08 ,  F04B39/02

CPC分类号： F17C5/04 ,  B67D7/36 ,  B67D7/54 ,  B67D7/78 ,  F04B37/08 ,  F04B39/0276 ,  F17C2221/012 ,  F17C2223/0161 ,  F17C2227/0164 ,  F17C2227/0337 ,  F17C2265/063

摘要： Apparatus for compressing cryogenic fluid in at least one compression stage comprising at least one piston and at least one sleeve delimiting at least one compression chamber, a shaft that is able to move in translation along a longitudinal axis (A), the shaft being connected to the piston(s) or sleeve(s) and being able to move with an alternating movement in two opposite directions to ensure phases of compression and intake of fluid into the at least one compression chamber by moving the at least one piston and the at least one sleeve in a relative manner, characterized in that the shaft comprises a portion of reduced cross section in the longitudinal direction (A), said portion of reduced cross section separating two adjacent parts of the shaft, the shaft also comprising at least one linking element made of material that is less thermally conductive than the constituent material of the shaft, in particular a composite material, said at least one linking element having two ends connected respectively to the two adjacent parts of the shaft.

公开(公告)号：US11953005B2

公开(公告)日：2024-04-09

申请号：US17777694

申请日：2020-01-22

申请人： Mitsubishi Electric Corporation

发明人： Wataru Sasano ,  Koji Masumoto ,  Yuji Takamura ,  Kohei Tatsuwaki

IPC分类号： F04C18/02 ,  F04B39/02 ,  F04C23/00 ,  F04C28/26 ,  F04C29/02

CPC分类号： F04C18/0253 ,  F04C18/0215 ,  F04C28/26 ,  F04C29/02 ,  F04C29/025 ,  F04C29/028 ,  F04B39/02 ,  F04B39/0246 ,  F04B39/0261 ,  F04B39/0284 ,  F04C23/008 ,  F04C2240/603 ,  F04C2270/205

摘要： A compressor includes: a shell forming an outer portion thereof and having lower part in which an oil pan is formed to store oil; a motor provided in the shell; a compression unit provided in the shell to compress a working gas when being driven by the motor; a frame fixed to the shell and supporting the compression unit; a shaft supported by the frame, connecting the motor and the compression unit, provided to transmit a turning force of the motor to the compression unit, and including an oil passage; and an oil pump provided at lower part of the shaft to draw oil from the pan and supply the oil into the oil passage. The pump includes a bypass valve that is opened, when a pressure of oil flowing in the oil passage is higher than a threshold pressure, to return part of the oil to the pan.

公开(公告)号：US20240102459A1

公开(公告)日：2024-03-28

申请号：US18204495

申请日：2023-06-01

申请人： LG Electronics Inc.

发明人： Jinwoong JUNG ,  Sangeun BAE ,  Chulgi ROH

IPC分类号： F04B39/00 ,  F04B39/02 ,  F04B39/10

CPC分类号： F04B39/0027 ,  F04B39/0276 ,  F04B39/10

摘要： A linear compressor includes a frame, a cylinder disposed in the frame, a piston configured to axially reciprocate in the piston, a discharge valve disposed at a front of the piston, and a discharge cover assembly coupled to the frame and disposed at the front of the piston. The discharge cover assembly includes a discharge cover including an inner space, a first discharge plenum that is disposed in the inner space of the discharge cover and defines a first discharge space inside the first discharge plenum, and a second discharge plenum disposed between the first discharge plenum and the discharge cover. The second discharge plenum defines a second discharge space in fluid communication with the first discharge space and a third discharge space in fluid communication with the second discharge space between the first discharge plenum and the second discharge plenum.

公开(公告)号：US11920577B1

公开(公告)日：2024-03-05

申请号：US17989082

申请日：2022-11-17

申请人： Saudi Arabian Oil Company

发明人： Talal H. Rashidi

IPC分类号： F04B39/02 ,  F01M1/02 ,  F01M11/00 ,  F01M11/06

CPC分类号： F04B39/0292 ,  F01M1/02 ,  F01M11/061 ,  F04B39/0207 ,  F04B39/0276 ,  F01M2011/0095

摘要： A first lube oil is stored by a lube oil reservoir. The first lube oil is flowed from the lube oil reservoir through a tubing network connected to a crankcase of a reciprocating compressor. A second lube oil is stored by a cylinder lubricator oil reservoir. The second lube oil is flowed from the cylinder lubricator oil reservoir to a cylinder lubricator that is connected to cylinders of the reciprocating compressor. A liquid level in the cylinder lubricator oil reservoir is measured. Based on the measured liquid level, at least a portion of the first lube oil from the tubing network is flowed to the cylinder lubricator oil reservoir through an intermediate flowline connecting the tubing network to the cylinder lubricator oil reservoir.

公开(公告)号：US11859603B2

公开(公告)日：2024-01-02

申请号：US17471913

申请日：2021-09-10

申请人： Copeland Industrial LP

发明人： Steven Fels ,  Steven Cihlar ,  Pruthviraj Nagnath Pawar ,  Jean-Louis Picouet

IPC分类号： F04B39/02 ,  B23P15/00 ,  F04B27/10 ,  F25B43/02 ,  F04B39/04 ,  B33Y80/00

CPC分类号： F04B27/109 ,  B23P15/00 ,  F04B39/02 ,  F04B39/04 ,  F25B43/02 ,  B33Y80/00

摘要： A 3D-printed oil separation assembly for use in a reciprocating compressor is provided. The compressor includes a suction chamber, a crankcase chamber, and at least one partition member at least partially separating the suction chamber and the crankcase chamber. The at least one partition member further includes at least one opening. The 3D-printed oil separation assembly comprises a coalescing structure positioned within the crankcase chamber adjacent the at least one partition member at the at least one opening; and at least one securing structure secured in operable relation with the at least one demisting structure so as to secure the coalescing structure relative to the opening. The coalescing structure comprises at least one structure selected from the group consisting of a baffled structure, a demisting structure, and combinations thereof. At least a portion of the coalescing structure is 3D-printed.

公开(公告)号：US11808262B2

公开(公告)日：2023-11-07

申请号：US17324219

申请日：2021-05-19

申请人： LG ELECTRONICS INC.

发明人： Sangik Son ,  Wooju Jeon ,  Jaehyeok Lee ,  Donghan Kim

IPC分类号： F04B53/18 ,  F04B39/02 ,  F16C29/02 ,  F04B35/04

CPC分类号： F04B53/18 ,  F04B39/0276 ,  F04B39/0292 ,  F16C29/025 ,  F04B35/045

摘要： A linear compressor includes a cylinder that defines a compression space of a refrigerant and has a cylindrical shape, and a piston disposed in the cylinder and reciprocating along an axis of the cylinder. The cylinder includes a supply port radially passing through the cylinder, and a recess formed on an inner circumferential surface of the cylinder and communicating with the supply port. The supply port includes a first supply port and a second supply port disposed in a rear of the first supply port, and the recess includes a first recess and a second recess disposed in a rear of the first recess. The first recess and the second recess are formed in different shapes.

公开(公告)号：US11703043B2

公开(公告)日：2023-07-18

申请号：US16604053

申请日：2018-04-24

申请人： ING. ENEA MATTEI S.P.A.

发明人： Giulio Contaldi ,  Stefano Murgia

IPC分类号： F25B43/02 ,  B01D5/00 ,  B01D35/00 ,  F04B39/02 ,  F04B39/04 ,  B01D46/00 ,  F04B39/14 ,  F04B39/16 ,  B01D21/00

CPC分类号： F04B39/02 ,  B01D5/00 ,  F04B39/04 ,  B01D21/0051 ,  B01D46/003 ,  B01D46/0089 ,  F04B39/14 ,  F04B39/16

摘要： An oil separator for a compressor comprising a tank and a lid for the tank, which comprises, in an integral manner, a valve body defining an outlet duct of the separator, a head of a coalescence filter, a body of an anti-condensate valve, a body of a minimum pressure valve and the relative connection ducts.

公开(公告)号：US11668297B2

公开(公告)日：2023-06-06

申请号：US16749272

申请日：2020-01-22

申请人： FNA Group, inc.

发明人： Gus Alexander ,  Richard J. Gilpatrick

IPC分类号： F04B53/18 ,  F04B1/295 ,  F04B39/12 ,  F04B53/22 ,  F16N7/36 ,  F04B39/02 ,  F01B3/00 ,  F04B1/148 ,  F01M11/00 ,  F04B23/02 ,  F04B27/10

CPC分类号： F04B53/18 ,  F04B1/295 ,  F04B39/0238 ,  F04B39/121 ,  F04B53/22 ,  F16N7/36 ,  F01B3/0029 ,  F01M2011/0033 ,  F04B1/148 ,  F04B23/02 ,  F04B27/109

摘要： A pump includes a cam plate, and an input shaft for rotationally driving the cam plate. A pump housing at least partially surrounds the cam plate and defines a cam plate oil reservoir around at least a portion of the cam plate. A bearing support is at least partially disposed within the cam plate oil reservoir. The bearing support defines a bearing oil reservoir at least partially surrounding a portion of the input shaft. At least one passage extends between the bearing oil reservoir and the cam plate oil reservoir. Dynamic motion imparted on oil within the cam plate oil reservoir facilitates migration of oil from the cam plate oil reservoir through a bearing at least partially supported by the bearing support into the bearing oil reservoir and through the at least one passage into the cam plate oil reservoir.