公开(公告)号：US20230065792A1

公开(公告)日：2023-03-02

申请号：US17792911

申请日：2021-01-18

申请人： NIDEC GLOBAL APPLIANCE BRASIL LTDA.

发明人： Edson Correa MIGUEL ,  Andrey HENSE ,  Filipe LONGARETE ,  Mauricio Pereira TADA ,  Emilio Rodrigues HULSE

IPC分类号： F04B39/02

摘要： The present invention relates to a lubricating oil transport system in a compressor, in which:
the rotating shaft (3) has at least one concavity (35) that extends over part of the rotating surface (33) in contact with the internal surface (11) of the rotor (1) and at least one restrictor hole (34) that communicates with the internal region of the rotating shaft (3) and with the concavity (35);
the rotor (1) comprises a circumferential channel (12) and at least one radial channel (13) extending through the inner wall (11) of the rotor (1);
the radial channel (13) is arranged around the circumferential channel (12);
said circumferential channel (12) and the radial channel (13) communicating with the concavity (35);
the circumferential channel (12), the radial channel (13) and the concavity (35) transport oil for cooling the upper part of the rotor (1) and the stator (2).

公开(公告)号：US11578535B2

公开(公告)日：2023-02-14

申请号：US17157383

申请日：2021-01-25

申请人： Upwing Energy, Inc.

发明人： David Biddick ,  Patrick McMullen ,  Herman Artinian

IPC分类号： E21B43/12 ,  E21B4/00 ,  E21B4/02 ,  E21B41/00 ,  F04B39/02 ,  F04D13/10 ,  F16C33/66

摘要： A downhole-type device includes an electric machine. The electric machine includes an electrical rotor configured to couple with a device to drive or be driven by the electric machine. An electrical stator surrounds the electric rotor. The electric stator includes a seal configured to isolate stator windings from an outside, downhole environment. An inner surface of the seal and an outer surface of the electric rotor define an annulus exposed to the outside environment. A bearing couples the electric rotor to the electric stator. A lubrication system is fluidically coupled to the downhole-type device. The lubrication system includes a topside pressure pump and a downhole-type distribution manifold configured to be used within a wellbore. The distribution manifold is fluidically connected to the topside pressure pump and the bearing to receive a flow of lubricant from the topside pressure pump.

公开(公告)号：US20230034137A1

公开(公告)日：2023-02-02

申请号：US17838859

申请日：2022-06-13

申请人： KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)

发明人： Shunsuke MORINAKA ,  Toru OKADA ,  Tomohiro OTSUKA

IPC分类号： F16J1/08 ,  F04B39/02

摘要： In a piston including a plurality of piston rings, a state where a difference in differential pressure between the piston rings is eased is maintained even after passage of time, and the life of the piston rings is extended.
A piston includes a piston body in which a plurality of ring grooves is formed, and a plurality of piston rings respectively arranged in the ring grooves. In the piston, a leakage groove is formed on a low-pressure side surface of the ring groove, and in a state where the piston ring is abutted with the low-pressure side surface while being abutted with a cylinder, the leakage groove ensures communication between a high-pressure side space and a low-pressure side space with respect to the piston ring.

公开(公告)号：US20230014696A1

公开(公告)日：2023-01-19

申请号：US17784527

申请日：2020-12-11

申请人： NIDEC GLOBAL APPLIANCE BRASIL LTDA.

发明人： Adilson Luiz MANKE ,  Aleandro Amauri ESPÍNDOLA ,  Rodrigo KREMER ,  Alberto Bruno FELDMANN ,  Tiago STAUDT ,  Rinaldo PUFF

IPC分类号： F04B35/04 ,  F04B39/02 ,  F04B39/12 ,  F04B39/00

摘要： The present invention describes a reciprocating compressor, comprising: an assembly block (10); a rotating shaft (20) comprising at least one inner axial channel (21), said inner axial channel (21) connected to at least one inner radial channel (22a, 22b) or to a cam (23); the cam (23) is associated with a connecting rod (24), and the connecting rod (24) is associated with a movable piston (25) within a compression cylinder (26); and an oil pump (C), comprising: an axial flow electric motor comprising a rotor (30), with magnets (31), and a stator (40) with coils (41); wherein the rotor (30) and the stator (40) are fixed to the shaft (20) and to the assembly block (10), respectively, by means of bearings or fixing arrangements.

公开(公告)号：US11473571B2

公开(公告)日：2022-10-18

申请号：US16616043

申请日：2018-05-21

申请人： Panasonic Appliances Refrigeration Devices Singapore

发明人： Hironari Akashi ,  Kazuhiro Yokota

IPC分类号： F04B39/02 ,  F04B39/00 ,  F04B39/12 ,  F25B1/02

摘要： A sealed refrigerant compressor (10A) accommodates an electric component (20A) and a compression component (30) in a sealed container (11). A crankshaft (40) included in the compression component (30) includes a main shaft part (41) and an eccentric shaft part (42). A main shaft part (41) is secured to a rotor (22A) of the electric component (20A). The rotor (22A) is provided with a balance adjustment means such as a balance hole (27), which adjusts an unbalanced load caused by the structure of the main shaft part (41).

公开(公告)号：US20220290671A1

公开(公告)日：2022-09-15

申请号：US17690517

申请日：2022-03-09

申请人： Danfoss Commercial Compressors

发明人： Patrice Bonnefoi

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

摘要： The scroll compressor (1) includes a compression unit (6); a drive shaft (16) which is vertically orientated; upper and lower bearing arrangements (27, 28) configured to rotatably support the drive shaft (16); a centrifugal oil pump (29) including a pick-up tube (32) attached to a lower end portion (23) of the drive shaft (16) and provided with a oil inlet immersed in an oil sump (31), the centrifugal oil pump (29) being configured to deliver oil to the compression unit (6) and to the upper and lower bearing arrangements (27, 28); and a static fairing member (35) secured to a non-rotating part of the scroll compressor (1) and including a static tubular part (36) which is immersed in the oil sump (31) and which surrounds the pick-up tube (32) with a predetermined distance such that a gap is formed between the inner surface of the static tubular part (36) and the outer surface of the pick-up tube (32).

公开(公告)号：US11441794B2

公开(公告)日：2022-09-13

申请号：US16810094

申请日：2020-03-05

申请人： YANMAR CO., LTD.

发明人： Norihiro Okuda ,  Hirohiko Nobuhara

IPC分类号： F24F1/16 ,  F25B43/00 ,  F24F1/46 ,  F25B13/00 ,  F25B41/40 ,  F24F1/10 ,  F02M21/02 ,  B01D33/66 ,  F04B39/02

摘要： A gas-side stop valve on the gas refrigerant side and a liquid-side stop valve on the liquid refrigerant side are provided in a package of an outdoor unit. A gas-side filter on the gas refrigerant side is mounted on the indoor unit side relative to the gas-side stop valve and inside the package of the outdoor unit. A liquid-side filter 9 on the liquid refrigerant side is mounted on the indoor unit side relative to the liquid-side stop valve and inside the package of the outdoor unit. As a result, it is not necessary to ensure a place for mounting the gas-side filter and the liquid-side filter at the time of installation on site and the workability can be improved.

公开(公告)号：US20220145872A1

公开(公告)日：2022-05-12

申请号：US17491682

申请日：2021-10-01

申请人： LG ELECTRONICS INC.

发明人： Mingeon JEONG ,  Bokann Park ,  Kyoungjun Park ,  Seeun Kim

IPC分类号： F04B39/02 ,  F04B39/00 ,  F04B35/04

摘要： A hermetic compressor may include a frame, a crankshaft, and an oil pump. The crankshaft may be rotatably mounted to the frame. The oil pump may be mounted to a lower portion of the crankshaft to be rotatable together with the crankshaft. The oil pump may pump oil from a lower region to an upper region of a shell using centrifugal force. The crankshaft may be provided with a hollow hole therein that is inclined in two directions with respect to an axial direction of the crankshaft. This may result in increasing a dynamic pressure for scattering the oil to the upper region of the shell and an oil supply amount.

公开(公告)号：US20220090590A1

公开(公告)日：2022-03-24

申请号：US17381654

申请日：2021-07-21

申请人： LG ELECTRONICS INC.

发明人： Sangik SON ,  Wooju JEON ,  Youngkyun LIM ,  Donghan KIM

IPC分类号： F04B35/04 ,  F04B39/00 ,  F04B39/12 ,  F04B39/02

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 gas inlet formed on an outer circumferential surface of the cylinder, a supply port radially passing through the cylinder and communicating with the gas inlet, and a recess communicating with the supply port and formed on an inner circumferential surface of the cylinder. An angle formed by an axial cross section of the recess and a straight line extending the supply port and an angle formed by the axial cross section of the recess and a straight line extending the inner circumferential surface of the cylinder each are an acute angle.

公开(公告)号：US20220082094A1

公开(公告)日：2022-03-17

申请号：US17535801

申请日：2021-11-26

申请人： ANHUI MEIZHI PRECISION MANUFACTURING CO., LTD.

发明人： Licheng ZHENG ,  Jin LI

IPC分类号： F04B39/02 ,  F04B27/00 ,  F04B39/00 ,  F04B39/12

摘要： A pump body assembly, a compressor and an air conditioner are provided. The pump body assembly has a crankshaft, a main bearing, and a cylinder body. The crankshaft has a main shaft part and an eccentric part connected with the main shaft part. The main bearing has a hub part. The main shaft part extends through a through hole in the hub part. A first oil guide groove is formed in the hole wall of the through hole. A sliding vane slot and a center hole are formed in the cylinder body. The crankshaft extends through the center hole. The main bearing is located at the one side of the cylinder body. The crankshaft and the main bearing are in uniform contact with oil films at all positions. The abnormal wear of the main shaft part of the crankshaft can be reduced, and the service life of the compressor can be prolonged.