公开(公告)号：US20240035469A1

公开(公告)日：2024-02-01

申请号：US18224471

申请日：2023-07-20

申请人： Pump Technology Solutions PS GmbH

发明人： Martin Heilig

IPC分类号： F04C14/24 ,  F04C15/06 ,  F04C2/344

CPC分类号： F04C14/24 ,  F04C15/06 ,  F04C2/344 ,  F04C2270/185

摘要： Apparatus for regulating delivery volume of a displacement pump comprises a displaceable regulating piston and a spring element acting on the regulating piston in a displacement direction (x) thereof. The apparatus further comprises a means for applying a force to the regulating piston against an effective direction (a) of the spring element.

公开(公告)号：US20230407866A1

公开(公告)日：2023-12-21

申请号：US18337912

申请日：2023-06-20

申请人： LG Electronics Inc.

发明人： Jehyeon MOON ,  Kyungho LEE ,  Minho LEE

IPC分类号： F04C18/02

CPC分类号： F04C18/0215 ,  F04C2240/30 ,  F04C2240/60 ,  F04C2240/40 ,  F04C2270/185

摘要： A scroll compressor includes an orbiting scroll that is coupled to a rotating shaft in a casing and includes an orbiting end plate portion coupled to the rotating shaft and an orbiting wrap that has a spiral shape protruding from one surface of the orbiting end plate portion, a fixed scroll including a fixed wrap that is engaged with the orbiting wrap defines a compression chamber with the orbiting wrap therebetween, and a main frame that rotatably supports the orbiting scroll and defines a back pressure chamber with the orbiting scroll. The fixed scroll defines a fixed back pressure hole having a first end configured to communicate with the first back pressure chamber and a second end is located between outer and inner circumferences of the orbiting wrap. The orbiting wrap is configured to cover at least a portion of the fixed back pressure hole during the orbital motion.

公开(公告)号：US11773855B2

公开(公告)日：2023-10-03

申请号：US17168651

申请日：2021-02-05

申请人： Hitachi Industrial Equipment Systems Co., Ltd.

发明人： Toshiaki Yabe ,  Tomoo Suzuki ,  Yuuji Itou ,  Kohei Sakai

IPC分类号： F04B39/00 ,  F04B35/04 ,  F04B49/06 ,  F04B49/20 ,  F04C28/06 ,  F04B49/08 ,  F04B27/08 ,  F04C18/16 ,  F04C28/08 ,  F04C28/24

CPC分类号： F04C28/06 ,  F04B27/08 ,  F04B35/04 ,  F04B39/0027 ,  F04B49/06 ,  F04B49/08 ,  F04B49/20 ,  F04C18/16 ,  F04C28/08 ,  F04C28/24 ,  F04C2240/403 ,  F04C2270/0525 ,  F04C2270/095 ,  F04C2270/185 ,  F04C2270/44

摘要： In order to reduce operation in a rotation-prohibited frequency range and to prevent resonance in a gas compressor wherein inverter control is performed, this gas compressor has: a compressor main body that compresses a gas; a motor that rotationally drives the compressor main body; an inverter that changes the rotational speed of the motor; a check valve arranged downstream from the compressor main body; a pressure detection means that detects load-side pressure downstream from the check valve; and a control device that, in accordance with the pressure detected by the pressure detection means, controls the frequency output by the inverter. The control device performs a control whereby compressed gas having a prescribed pressure is generated/maintained by increasing/decreasing the frequency, and when the frequency that generates the compressed gas having the prescribed pressure includes a specific frequency, the inverter's output frequency is increased or decreased when the pressure detected by the pressure detection means reaches a pressure corresponding to a frequency that has a more constant pressure width than the prescribed pressure and does not include the specific frequency.

公开(公告)号：US11754072B2

公开(公告)日：2023-09-12

申请号：US17196119

申请日：2021-03-09

申请人： Emerson Climate Technologies, Inc.

发明人： Roy J. Doepker ,  Michael M. Perevozchikov

IPC分类号： F04C28/10 ,  F04C29/12 ,  F04C18/02 ,  F04C28/24 ,  F04C28/26 ,  F04C27/00

CPC分类号： F04C28/10 ,  F04C18/0223 ,  F04C18/0253 ,  F04C28/24 ,  F04C28/26 ,  F04C29/126 ,  F04C27/008 ,  F04C2270/185

摘要： A compressor may include first and second scrolls, and an axial biasing chamber. Spiral wraps of the scrolls mesh with each other and form compression pockets including a suction-pressure compression pocket, a discharge-pressure compression pocket, and intermediate-pressure compression pockets. The axial biasing chamber may be disposed axially between the second end plate and a component. Working fluid disposed within the axial biasing chamber may axially bias the second scroll toward the first scroll. The second end plate includes outer and inner ports. The outer port is disposed radially outward relative to the inner port. The outer port may be open to a first one of the intermediate-pressure compression pockets and in selective fluid communication with the axial biasing chamber. The inner port may be open to a second one of the intermediate-pressure compression pockets and in selective fluid communication with the axial biasing chamber.

公开(公告)号：US20190249525A1

公开(公告)日：2019-08-15

申请号：US16333435

申请日：2017-09-22

申请人： Siemens Aktiengesellschaft

发明人： Rogier van der Groep ,  Arthur Kauffeld ,  Bob Okhuijsen

IPC分类号： E21B43/12 ,  E21B47/06 ,  F04C28/28 ,  F04C28/02

CPC分类号： E21B43/121 ,  E21B47/06 ,  F04C18/16 ,  F04C28/02 ,  F04C28/08 ,  F04C28/12 ,  F04C28/28 ,  F04C2270/185 ,  F04C2270/205

摘要： A method of operating a wellhead compressor includes selecting a plurality of operating points of the wellhead compressor, measuring the tubing pressure at the plurality of operating points of the wellhead compressor and determining an efficiency achieved by the wellhead compressor when operating at each of the operating points based on at least the measured tubing pressure at each of the operating points. A production curve is generated of well pressure as a function of flow rate from a combination of measured data and predicted data. An operating point of the wellhead compressor is selected from the production curve based on at least the efficiency of the wellhead compressor at the selected operating point and the wellhead compressor is operated at the selected operating point. The steps of the method are repeated after operating the wellhead compressor at the selected operating point for a predetermined period of time.

公开(公告)号：US20180118378A1

公开(公告)日：2018-05-03

申请号：US15340746

申请日：2016-11-01

申请人： HAMILTON SUNDSTRAND CORPORATION

发明人： Mark Reinecke

IPC分类号： B64G1/26 ,  F15B7/00 ,  F04C2/10 ,  F04C14/18 ,  F04C14/24

CPC分类号： B64G1/26 ,  F02K9/84 ,  F02K9/97 ,  F04C2/10 ,  F04C14/18 ,  F04C14/24 ,  F04C2270/185 ,  F04C2270/44 ,  F05D2260/607 ,  F15B7/003 ,  Y02T50/675

摘要： A thrust vector control system is provided. The thrust vector control system may comprise an anti-stall hydraulic pump configured to deliver hydraulic fluid to at least one actuator, wherein each actuator may be configured to move an exhaust nozzle of a space vehicle. The anti-stall hydraulic pump may provide thermal conditioning to the thrust vector actuation control system during ground operation and/or periods of low output operation.

公开(公告)号：US20170306948A1

公开(公告)日：2017-10-26

申请号：US15523563

申请日：2014-10-31

申请人： Melling Tool Company

发明人： Ayres Pinto De Andrade Filho ,  João Luiz De Carvalho Meira ,  Eduardo Gubbiotti Ribeiro

IPC分类号： F04C14/22 ,  F04C2/344

CPC分类号： F04C14/22 ,  F04C2/3442 ,  F04C14/226 ,  F04C2210/14 ,  F04C2270/185

摘要： A variable displacement vane pump that includes a biasing assembly that applies a first biasing force to a pump control ring when the pump control ring is located a first position and a second position and applies a second biasing force when the pump control ring is located between the second position and a third position. The first position of the pump control ring corresponds to a maximum volumetric capacity of the pump, the second position corresponds to an intermediary volumetric capacity of the pump, and the third position corresponds to a minimum volumetric capacity of the pump. Fluid pressure within a control chamber urges the pump control ring toward the third position.

公开(公告)号：US09394891B2

公开(公告)日：2016-07-19

申请号：US13983576

申请日：2011-02-21

申请人： Carmine Cuneo

发明人： Carmine Cuneo

IPC分类号： F04B17/05 ,  F04C2/344 ,  F04C14/22 ,  F04B27/18

CPC分类号： F04B17/05 ,  F04B27/1804 ,  F04B2027/1827 ,  F04C2/3442 ,  F04C14/223 ,  F04C2210/206 ,  F04C2270/185

摘要： A lubricant pump for pumping a pressurized lubricant to an engine includes a shiftable control ring, a pump rotor, a pump outlet port, a pressure control system and a preload control arrangement. The pressure control system comprises a first pressure control chamber, a first pressure conduit connecting the pump outlet port with the first pressure control chamber, and a pressure control valve. The pressure control valve comprises an outlet port, a control valve cylinder wall comprising a control port connected with the outlet port, a control plunger which opens and closes the control port, an input pressure plunger connected with the control plunger, and a control spring preloading the control plunger into a closed position. The preload control arrangement comprises a preload cylinder, a preload plunger in the preload cylinder supporting a basis of the control spring, a preload cylinder inlet, and a preload control valve controlling a lubricant pressure.

摘要翻译： 用于将加压润滑剂泵送到发动机的润滑泵包括可移动控制环，泵转子，泵出口，压力控制系统和预负载控制装置。 压力控制系统包括第一压力控制室，连接泵出口与第一压力控制室的第一压力管道和压力控制阀。 压力控制阀包括出口，控制阀缸壁，其包括与出口连接的控制端口，打开和关闭控制端口的控制柱塞，与控制柱塞连接的输入压力柱塞和控制弹簧预加载 控制柱塞进入关闭位置。 预压控制装置包括预压缸，预压缸中的预载柱塞支撑控制弹簧的基础，预压缸入口以及控制润滑剂压力的预压控制阀。

公开(公告)号：US20150010417A1

公开(公告)日：2015-01-08

申请号：US14224504

申请日：2014-03-25

申请人： Halla Visteon Climate Control Corp.

发明人： Jong Bo Won ,  Il Young Park ,  Kweon Soo Lim

IPC分类号： F04C29/00 ,  F04C18/02

CPC分类号： F04C18/0215 ,  F04C18/0261 ,  F04C23/008 ,  F04C27/005 ,  F04C2270/185

摘要： Disclosed herein is a scroll compressor in which refrigerant is compressed in a compression chamber while the volume of the compression chamber is gradually decreased due to relative rotation of a fixed scroll and an orbiting scroll. In accordance with the disclosure, the scroll compressor is provided in which a pressure in a back-pressure chamber is managed in connection with a discharge refrigerant pressure so that the orbiting scroll is supported by the pressure in the back-pressure chamber without a power loss or an inner leak in an overall pressure section of a scroll.

摘要翻译： 这里公开了一种涡旋式压缩机，其中在压缩室内压缩制冷剂，同时由于固定涡卷和绕动涡卷的相对旋转，压缩室的容积逐渐减小。 根据本公开，提供了涡旋式压缩机，其中背压室中的压力与排出制冷剂压力相关联地被管理，使得绕动涡盘由背压室中的压力支撑而没有功率损耗 或涡卷的整体压力部分的内部泄漏。

公开(公告)号：US20140147323A1

公开(公告)日：2014-05-29

申请号：US14086473

申请日：2013-11-21

申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

发明人： Yasushi WATANABE ,  Koji Saga ,  Hideaki Ohnishi

IPC分类号： F04C14/22 ,  F04C2/344

CPC分类号： F04C2/3442 ,  F04B49/002 ,  F04B49/125 ,  F04C14/226 ,  F04C2210/206 ,  F04C2270/185 ,  F04C2270/58 ,  F04C2270/585

摘要： A variable displacement pump including a control mechanism shiftable between first and second states, when the control mechanism is in the first state, the spool is in an initial position in which fluid communication between an introduction port and the remaining ports is restrained, fluid communication between a first control port and a drain port is allowed, and fluid communication between a second control port and the drain port is restrained, and when the control mechanism is shifted to the second state in accordance with increase in fluid pressure discharged, the spool is in an operating position in which the fluid communication between the introduction port and the first control port is allowed, the fluid communication between the first control port and the drain port is restrained, and the fluid communication between the second control port and the drain port is allowed.

摘要翻译： 一种可变排量泵，其包括在第一状态和第二状态之间可移动的控制机构，当控制机构处于第一状态时，阀芯处于初始位置，在该初始位置，限制引入口与其余端口之间的流体连通， 允许第一控制端口和排放端口，并且限制第二控制端口和排出端口之间的流体连通，并且当控制机构根据排出的流体压力的增加而移动到第二状态时，阀芯处于 允许引入口和第一控制口之间的流体连通的操作位置被限制，第一控制端口和排出口之间的流体连通被限制，并且允许第二控制端口和排出端口之间的流体连通 。