公开(公告)号：US12116895B2

公开(公告)日：2024-10-15

申请号：US17424513

申请日：2019-02-06

Applicant: ATELIERS BUSCH SA

Inventor： Théodore Iltchev ,  Sergio Dessi ,  Stéphane Varrin

IPC: F04C18/12 ,  F01C21/10 ,  F04C18/14 ,  F04C23/00 ,  F04C29/04 ,  F04C29/12

CPC classification number: F01C21/10 ,  F04C18/123 ,  F04C18/126 ,  F04C18/14 ,  F04C23/001 ,  F04C29/04 ,  F04C29/12 ,  F05B2210/12

Abstract: A multistage pump body comprises a first pumping chamber (20) and a second pumping chamber (21). A connecting duct (26a) puts an outlet (27) of the first pumping chamber (20) into communication with an inlet (28) of the second pumping chamber (21). A leak-tight conduit (40) is provided for the circulation of a cooling liquid. The connecting duct (26a) is a lateral duct of the multistage pump body. A heat-conducting wall (33) partially delimits the connecting duct (26a) and has an external surface (34) on the outside. At least a portion of the connecting duct (26a) passes between this external surface (34) of the heat-conducting wall (33) and the leak-tight conduit (40).

公开(公告)号：US12031536B2

公开(公告)日：2024-07-09

申请号：US18032494

申请日：2021-10-18

Applicant: Hitachi Industrial Equipment Systems Co., Ltd.

Inventor： Takeshi Tsuchiya ,  Kotaro Chiba ,  Tomohiro Komatsu ,  Shota Tanimoto ,  Toshiaki Yabe ,  Shigeyuki Yorikane

IPC: F01C1/16 ,  F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C18/00 ,  F04C18/12 ,  F04C18/14 ,  F04C18/16

CPC classification number: F04C18/16 ,  F04C18/126 ,  F04C18/14 ,  F04C2240/20 ,  F04C2240/30 ,  F04C2250/20

Abstract: In a screw compressor, a lobe of a lobe profile of a female rotor includes: a first contour line defining a leading flank; a second contour line defining a trailing flank; and a third contour line defining a lobe tip having both endpoints at which the female has the maximum radius. In the lobe profile, when a first angle formed by two line segments linking a second rotation center as a vertex and both ends of the first contour line, a second angle formed by two line segments linking the second rotation center and both ends of the second contour line, and a third angle formed by two line segments linking the second rotation center and both ends of the third contour line, the third angle is greater on the delivery side in the axial direction, and the first angle is smaller on the delivery side in the axial direction.

公开(公告)号：US09644627B2

公开(公告)日：2017-05-09

申请号：US14410357

申请日：2012-06-28

Applicant: Takahiro Ito ,  Isao Hayase ,  Tadashi Osaka ,  Azusa Amino

Inventor： Takahiro Ito ,  Isao Hayase ,  Tadashi Osaka ,  Azusa Amino

IPC: F01C19/02 ,  F01C19/10 ,  F03C2/08 ,  F04C27/00 ,  F01C1/18 ,  F04C18/18 ,  F04C15/00 ,  F04C2/14 ,  F04C18/14 ,  F04C29/00 ,  F04C2/18

CPC classification number: F04C15/0019 ,  F04C2/14 ,  F04C2/18 ,  F04C15/0026 ,  F04C15/0061 ,  F04C18/14 ,  F04C27/004 ,  F04C27/006 ,  F04C29/005

Abstract: A gear pump includes a pair of gears that meshes with each other, two rotational shafts inserted into the respective gears that rotate together with gears, a pair of side plates arranged adjacent to both side surfaces of the gears, each having two through-holes forming bearings of the two shafts, a seal block that abuts against the pair of side plates and covers a part of the pair of gears, a pump assembly having the gears, the two shafts, the pair of side plates, and the seal block, and a case having a recess to accommodate the pump assembly. A line passing through an arc center of a cylindrical surface inscribed in the facing surface of the case, and parallel to the two shafts, forms a rotating axis. When the pump assembly rotates about the rotating axis, one of the of side plates contacts the inner wall of the case.

公开(公告)号：US20170089342A1

公开(公告)日：2017-03-30

申请号：US15316010

申请日：2015-06-03

Applicant: Ralf Steffens ,  Steffen KLEIN

Inventor： Ralf Steffens

IPC: F04C29/04 ,  F04C23/00 ,  F04C28/08 ,  F04C18/14

CPC classification number: F04C29/04 ,  F04C18/54 ,  F04C18/565 ,  F04C28/08 ,  F04C2270/19

Abstract: The invention relates to a spindle compressor without operating fluid in the working space with a 2-tooth spindle rotor and a 3-tooth spindle rotor in a surrounding compressor housing-and preferably non-parallel rotation axes of the two spindle rotors, in particular for use in compression refrigeration machines. In order to improve the degree of efficiency while providing flexible power adjustment, it is proposed according to the invention that a multi-stage spindle compressor be used as a refrigerant compressor, whose compressor housing and whose spindle rotors are cooled via a partial-flow branch-off of liquid refrigerant from the refrigerant main flow circuit, wherein the compressor housing is cooled in a controlled manner by means of refrigerant evaporation, with the refrigerant vapor being subsequently fed to the inlet, and that, for power adjustment, there are also post-inlet feeds into the working space in addition to the inlet feed, and also pre-outlet discharges in addition to the outlet discharge from the outlet space, each with their own regulating device.

公开(公告)号：US20160186757A1

公开(公告)日：2016-06-30

申请号：US14959673

申请日：2015-12-04

Applicant: Ingersoll-Rand Company

Inventor： James Christopher Collins

IPC: F04C29/04 ,  F04D29/063 ,  F04D29/58 ,  F04C18/14 ,  F04B39/06 ,  F04C23/00 ,  F04C29/02 ,  F04B25/04 ,  F04B39/02 ,  F04D17/12 ,  F04C18/107

CPC classification number: F04C29/04 ,  F04B25/04 ,  F04B39/02 ,  F04B39/0207 ,  F04B39/06 ,  F04B41/02 ,  F04C18/16 ,  F04C29/02 ,  F04C29/021 ,  F04C2210/221 ,  F04C2270/195 ,  F04D29/063 ,  F04D29/701 ,  F04D31/00 ,  F25B5/02 ,  F25B25/005

Abstract: The present disclosure provides a compressor system having at least one fluid compressor for compressing a working fluid. A lubrication supply system is operable for supplying lubrication fluid to the compressor. A closed loop cooling system using R718 refrigerant is provided to cool the working fluid. The closed loop cooling system includes a refrigerant compressor for compressing the refrigerant, a condenser operable for receiving compressed refrigerant gas and removing heat to form liquid refrigerant, and an expansion device for expanding and cooling the liquid refrigerant into a cooled gaseous refrigerant.

Abstract translation: 本公开提供了一种具有用于压缩工作流体的至少一个流体压缩机的压缩机系统。 润滑供应系统可操作用于向压缩机供应润滑流体。 提供使用R718制冷剂的闭环冷却系统来冷却工作流体。 闭环冷却系统包括用于压缩制冷剂的制冷剂压缩机，用于接收压缩的制冷剂气体并除去热量以形成液体制冷剂的冷凝器，以及用于将液体制冷剂膨胀和冷却成冷却的气态制冷剂的膨胀装置。

公开(公告)号：US20050196300A1

公开(公告)日：2005-09-08

申请号：US10792876

申请日：2004-03-05

Applicant: Lin Heng-I ,  Chuang Feng-Ming ,  Hsu Lin

Inventor： Lin Heng-I ,  Chuang Feng-Ming ,  Hsu Lin

IPC: F04B17/00 ,  F04B35/04 ,  F04C18/14

CPC classification number: F04C2/14 ,  F04C2/086

Abstract: A pump for boosting and transporting a liquid, includes a housing, a gear rotor device, at least one cover and a motor. A transportation chamber is defined in the housing. An inlet and an outlet are defined in the housing and respectively in communication with the transportation chamber. The gear rotor device is received in the transportation chamber. The gear rotor device includes first and second gears meshing with each other. The at least one cover covers and seals at least one side of the housing. The motor is mounted on one cover with a shaft thereof rotatably connecting with one of the first and second gears. Through a full compression by the gear rotor device, the liquid transportation is in a positive displacement and the liquid is pressurized by the gear rotor device whereby the pump has high head and therefore efficiently transports the liquid.

Abstract translation: 一种用于升高和运输液体的泵，包括壳体，齿轮转子装置，至少一个盖子和马达。 在壳体中限定了运输室。 入口和出口限定在壳体中并分别与运输室连通。 齿轮转子装置被容纳在传送室中。 齿轮转子装置包括彼此啮合的第一和第二齿轮。 所述至少一个盖覆盖并密封所述壳体的至少一侧。 马达安装在一个盖上，其轴与第一和第二齿轮中的一个旋转地连接。 通过齿轮转子装置的完全压缩，液体输送处于正位移，并且液体被齿轮转子装置加压，由此泵具有高的头部，因此有效地输送液体。

公开(公告)号：US4488858A

公开(公告)日：1984-12-18

申请号：US413247

申请日：1982-08-30

Applicant: Rune V. Glanvall

Inventor： Rune V. Glanvall

IPC: F04C18/52 ,  F04C18/16 ,  F04C29/12 ,  F04C18/14

CPC classification number: F04C29/12 ,  F04C18/16

Abstract: In a compressor having at least two cooperating rotors of which at least one has a screw form, the medium to be compressed is supplied through a stationary inlet port located radially outside the screw-formed rotor at the meshing zone between the rotors, where new volume on rotation of the rotors is continuously formed for sucking the medium into the compressor. The inlet port extends in the axial direction of the screw-formed rotor with a substantially constant width and shows an area which is substantially in accordance with the sum of the cross-sectional areas of the grooves of the screw-formed rotor, which grooves communicate with the inlet port and in which the medium is transported further on into the compressor.

Abstract translation: 在具有至少两个具有螺杆形式的至少两个配合转子的压缩机中，待压缩的介质通过位于转子之间的啮合区域处的位于螺旋形转子径向外侧的固定入口提供，其中新的体积 连续地形成转子的旋转以将介质吸入压缩机。 入口端口以螺旋形转子的轴向方向以基本恒定的宽度延伸，并且显示出基本上与螺旋形转子的槽的横截面面积之和相等的面积 具有入口端口，并且介质进一步输送到压缩机中。

公开(公告)号：US12146481B2

公开(公告)日：2024-11-19

申请号：US18122831

申请日：2023-03-17

Applicant: Hitachi, Ltd.

Inventor： Ryota Iijima ,  Kotaro Chiba ,  Nae Hisano

IPC: F04B39/02 ,  F04B49/06 ,  F04B51/00 ,  F04C18/14 ,  F04C28/08 ,  F04C28/28 ,  F04C29/02 ,  F04C29/04

Abstract: A gas compressor includes a compression mechanism, a separator tank that introduces lubricating oil to be supplied to the compression mechanism and a mixed fluid of a working fluid and lubricating oil discharged from the compression mechanism and separates the lubricating oil. An oil cooler cools the lubricating oil from the separator tank. An oil circulation path supplies cooled lubricating oil to the compression mechanism. The gas compressor includes a suction temperature sensor that detects suction temperature of the working fluid, a discharge pressure sensor that detects discharge pressure of the compressed working fluid, a rotation speed sensor that detects rotation speed of the motor. A lubricating oil state estimation unit estimates the temperature of the lubricating oil based on the detected suction temperature, discharge pressure, and rotation speed of the motor. The lubricating oil state estimation unit uses this result to estimate the deterioration state of the lubricating oil.

公开(公告)号：US20230374958A1

公开(公告)日：2023-11-23

申请号：US18320777

申请日：2023-05-19

Applicant: EATON INTELLIGENT POWER LIMITED

Inventor： Douglas Anthony Hughes ,  Brandon Dennis Biller ,  Jim Kevin Spring ,  Jesse Drummond ,  Matthew Fortini

IPC: F02M26/49 ,  F02B33/38 ,  F02B39/10 ,  F02B33/34 ,  F04C18/12 ,  F04C28/08 ,  F04C28/06 ,  F02D41/00 ,  F02M26/50 ,  F02M26/34 ,  F04C18/14 ,  F02M26/00 ,  F04C29/04 ,  F04C29/02

CPC classification number: F02M26/49 ,  F02B33/38 ,  F02B39/10 ,  F02B33/34 ,  F04C18/126 ,  F04C28/08 ,  F04C28/06 ,  F02D41/0065 ,  F02D41/0007 ,  F02M26/50 ,  F02D41/006 ,  F02M26/34 ,  F04C18/14 ,  Y02T10/40 ,  F02M26/00 ,  F04C29/04 ,  F04C29/02 ,  Y02T10/12

Abstract: A method of operating exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine; providing an EGR control unit linked to the EGR pump assembly; providing sensors linked to the EGR control unit; determining if a motor speed is within a predetermined target in step S1 wherein when motor speed=predetermined target then; determining if a motor torque is within a predetermined target in step S2 wherein when motor torque=predetermined target then; determining if a motor temperature is within a predetermined target in step S3 wherein when motor temperature=predetermined target then; and maintaining operation of the exhaust gas recirculation pump.

公开(公告)号：US11668269B2

公开(公告)日：2023-06-06

申请号：US16962459

申请日：2019-01-17

Applicant: EATON INTELLIGENT POWER LIMITED

Inventor： Douglas Anthony Hughes ,  Brandon Dennis Biller ,  Jim Kevin Spring ,  Jesse Drummond ,  Matthew Fortini

IPC: F02M26/49 ,  F02M26/34 ,  F04C28/06 ,  F04C28/08 ,  F04C18/12 ,  F02M26/33 ,  F02M26/05 ,  F02M26/47 ,  F02M26/50 ,  F02D41/00 ,  F02B1/14 ,  F02B3/06 ,  F02B33/38 ,  F02B39/10 ,  F02B33/34 ,  F04C18/14 ,  F04C29/02 ,  F04C29/04 ,  F02M26/00

CPC classification number: F02M26/49 ,  F02B1/14 ,  F02B3/06 ,  F02B33/34 ,  F02B33/38 ,  F02B39/10 ,  F02D41/006 ,  F02D41/0007 ,  F02D41/0065 ,  F02M26/05 ,  F02M26/33 ,  F02M26/34 ,  F02M26/47 ,  F02M26/50 ,  F04C18/126 ,  F04C28/06 ,  F04C28/08 ,  F02M26/00 ,  F02M2026/004 ,  F04C18/14 ,  F04C29/02 ,  F04C29/04 ,  Y02T10/12 ,  Y02T10/40

Abstract: A method of operating an exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine; providing an EGR control unit lined to the EGR pump assembly; providing sensors linked to the EGR control unit; determining if a motor speed is within a predetermined target (step SI), wherein when the motor speed is within the predetermined target then; determining if a motor torque is within a predetermined target (step S2) wherein when the motor torque is within the predetermined target then; determining if a motor temperature is within a predetermined target (step S3) wherein when the motor temperature is within the predetermined target then; maintaining operation of the exhaust gas recirculation pump.