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1. 发明公开

US20240369058A1 Single-Entry Screw Pump 审中-公开
公开(公告)号：US20240369058A1
公开(公告)日：2024-11-07
申请号：US18651519
申请日：2024-04-30
申请人： ITT Bornemann GmbH
发明人： David Johannes Blatt
IPC分类号： F04C2/16 , F04C15/00
CPC分类号： F04C2/16 , F04C15/0088 , F04C2240/30 , F04C2240/52
摘要： A single-entry screw pump with a housing which has an inlet and an outlet for a medium to be pumped, with two spindles which are rotatably mounted in the housing in slide bearings, the spindles each have a screw thread on their outer circumference between the slide bearings, the screw threads of the spindles engage with one another and convey the medium from the inlet to the outlet, the housing has a sleeve section in which the screw threads of the spindles are positioned, the sleeve section has a suction-side inlet opening and a pressure-side outlet opening, wherein the media flow from the inlet to the inlet opening is guided along the pressure-side slide bearing in a hydraulically equalising manner and from the outlet opening to the outlet along the suction-side slide bearing.

2. 发明授权

US11953007B2 Rotary lobe pump with internal bearing 有权
公开(公告)号：US11953007B2
公开(公告)日：2024-04-09
申请号：US17312426
申请日：2019-12-13
申请人： VOGELSANG GMBH & CO. KG
发明人： Paul Krampe , Henrik Ahrens
IPC分类号： F04C2/12 , F04C2/08 , F04C15/00
CPC分类号： F04C2/126 , F04C2/084 , F04C15/0038 , F04C15/0061 , F04C15/008 , F04C2240/20 , F04C2240/50 , F04C2240/52 , F04C2240/805 , F05B2240/50
摘要： A rotary lobe pump having a pump housing with a pump room, an inlet opening and an outlet opening, a first multi-lobe rotary piston, which is arranged in the pump room and is rotatably mounted about a first axis of rotation, a second multi-lobe rotary piston, which is arranged in the pump room and is rotatably mounted about a second axis of rotation spaced apart from the first axis of rotation and meshingly engages in the first rotary piston, wherein the first and second rotary pistons are drivable in opposite directions and are designed to generate a flow of a conveyed medium from the inlet opening through the pump room to the outlet opening by counter-rotation about the first and second axis of rotation, respectively, and a drive device, which is mechanically coupled to the rotary pistons for driving the rotary pistons.

3. 发明公开

US20240084802A1 Rotor Assembly, Compressor and Air Conditioner 审中-公开
公开(公告)号：US20240084802A1
公开(公告)日：2024-03-14
申请号：US18269428
申请日：2021-10-25
申请人： Gree Electric Appliances, Inc. of Zhuhai
发明人： Jianming Tan , Hua Liu , Zhiping Zhang , Han Tang , Xiaokun Wu , Zhongkeng Long
IPC分类号： F04C18/16 , F04C29/00 , F04C29/12
CPC分类号： F04C18/16 , F04C29/0021 , F04C29/12 , F04C2240/20 , F04C2240/52
摘要： A compressor (200), comprising: a first rotor (20) being rotatable around a first axis (11), the first rotor (20) comprising a first portion (22) and a second portion (24); and a first shaft (10) carrying the first portion (22) and the second portion (24), the first shaft (10) having a first end (12) and a second end (14) that are oppositely arranged, wherein the first rotor (20) is configured to be applied with a preset acting force in a direction from the first end (12) toward the second end (14) or from the second end (14) toward the first end (12) during rotation. The size of the compressor (200) can be reduced with the displacement of the compressor (200) remaining substantially unchanged.

4. 发明申请

US20190211825A1 Screw Compressor System for a Utility Vehicle 审中-公开
公开(公告)号：US20190211825A1
公开(公告)日：2019-07-11
申请号：US16355083
申请日：2019-03-15
申请人： KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
发明人： Gilles HEBRARD , Jean-Baptiste MARESCOT , Joerg MELLAR , Thomas WEINHOLD
IPC分类号： F04C29/00 , F04C18/16
CPC分类号： F04C29/0042 , F01C21/10 , F04C18/086 , F04C18/16 , F04C2230/10 , F04C2230/60 , F04C2230/603 , F04C2240/30 , F04C2240/52 , F04C2240/805
摘要： A screw compressor system for a utility vehicle has at least one screw compressor, at least one screw compressor drive with an output shaft, at least one driven screw with a screw drive shaft section. The output shaft and the screw drive shaft section are essentially coaxial.

5. 发明申请

US20190203709A1 MOTOR-OPERATED COMPRESSOR 审中-公开
公开(公告)号：US20190203709A1
公开(公告)日：2019-07-04
申请号：US16199630
申请日：2018-11-26
申请人： LG ELECTRONICS INC.
发明人： Jongtae HER , Kyoungjun PARK , Junghoon PARK , Jinyong JANG , Yongkyu CHOI
IPC分类号： F04C18/02 , F04C29/00 , F04C29/02 , F04C29/12
CPC分类号： F04C18/0215 , F01C21/02 , F04C18/0292 , F04C23/02 , F04C29/0078 , F04C29/0085 , F04C29/02 , F04C29/023 , F04C29/047 , F04C29/12 , F04C2210/26 , F04C2240/30 , F04C2240/403 , F04C2240/50 , F04C2240/51 , F04C2240/52 , F04C2240/60 , F04C2240/603 , F04C2240/808
摘要： A motor-operated compressor includes a casing having a sealed internal space, a first scroll fixed in the internal space, and a second scroll engaged with the first scroll to form a plurality of compression chambers. The compressor also includes a frame fixed on an opposite side of the first scroll with the second scroll interposed therebetween, and a driving motor positioned on an opposite side of the second scroll. The compressor further includes a rotary shaft coupled to the second scroll in an off-centered manner and coupled to the driving motor. The first end portion of the rotary shaft forms a fixed end supported in the radial direction by members positioned on both sides of the second scroll. The second end portion of the rotary shaft forms a free end coupled to a rotor of the driving motor.

6. 发明申请

US20190195226A1 HIGH SUCTION PRESSURE SINGLE SCREW COMPRESSOR WITH THRUST BALANCING LOAD USING SHAFT SEAL PRESSURE AND RELATED METHODS 审中-公开
公开(公告)号：US20190195226A1
公开(公告)日：2019-06-27
申请号：US16331909
申请日：2016-11-14
申请人： Vilter Manufacturing LLC
发明人： Jean-Louis Picouet , Abhitjit Pande
IPC分类号： F04C18/52 , F04C27/00 , F04C29/00 , F04C29/02
CPC分类号： F04C18/52 , F04C27/009 , F04C29/0021 , F04C29/02 , F04C2240/52
摘要： A high suction pressure thrust load balance assembly configured for use with a single screw compressor includes comprises a sealing baffle that is keyed to, so as to be rotatable along with, a main rotor drive shaft of the single screw compressor. The sealing baffle is configured to create a force or load to counteract the axial force of the main rotor drive shaft created during rotation of the main rotor drive shaft using the pressurized oil used to lubricate the mechanical shaft seal of the compressor.

7. 发明授权

US09932829B2 Expander 有权
公开(公告)号：US09932829B2
公开(公告)日：2018-04-03
申请号：US14230149
申请日：2014-03-31
申请人： Kobe Steel, Ltd.
发明人： Noboru Tsuboi
IPC分类号： F01C21/02 , F01C1/16 , F01C21/04 , F01C1/02 , F01C19/12
CPC分类号： F01C21/02 , F01C1/02 , F01C1/16 , F01C19/125 , F01C21/04 , F04C2240/52
摘要： In order to suppress the damage and the degradation in durability of a bearing of an expander, simplify the configuration of the expander, and reduce the manufacturing cost thereof, an expander of the present invention includes an expander rotor that is rotationally driven by an expanding force transmitted from vapor of a working medium introduced into an expansion chamber and a first bearing that supports a first rotation shaft of the expander rotor to a vapor inlet, a casing includes therein first bearing chambers that have a pressure lower than that of the vapor inlet and accommodate the first bearing, and a passage that leads lubricant to a low-pressure portion having a pressure lower than that of the first bearing chamber is connected to a position above the lowermost portion of the first bearing in the first bearing chamber.

8. 发明申请

US20170356448A1 Screw Compressor with Oil Shutoff and Method 审中-公开
公开(公告)号：US20170356448A1
公开(公告)日：2017-12-14
申请号：US15524097
申请日：2015-11-17
申请人： Carrier Corporation
发明人： Masao Akei , Yifan Qiu
IPC分类号： F04C29/02 , F04C29/00 , F25B1/047 , F04C18/20 , F04C18/16 , F25B31/00
CPC分类号： F04C29/028 , F04C18/16 , F04C18/20 , F04C23/008 , F04C29/0021 , F04C29/0085 , F04C29/021 , F04C2210/26 , F04C2240/30 , F04C2240/40 , F04C2240/50 , F04C2240/52 , F04C2240/60 , F25B1/047 , F25B31/004 , F25B2400/23 , F25B2500/16
摘要： In a screw compressor (20), a male rotor suction end bearing (96) and discharge end bearing (90 1, 90 2, 90 3) mount the male rotor suction end shaft portion (39) and discharge end shaft portion (40). A female rotor suction end bearing (98) and discharge end bearing (92 1, 92 2) mount the female rotor suction end shaft portion (41) and discharge end shaft portion (42). At least one valve (182; 282; 382 1,382 2,382 3; 82; 582-1,582-2; 682-1,682-2; 782-1,782-2) is along a lubricant flowpath and has an energized condition and a de-energized condition. At least one restriction (184; 84-1,84-2; 84-1, 84-2,84-3; 484 1,484-2,84-3; 84 1,84 2,584; 84-1,84-2,684; 84-1,84-2,784) is along the lubricant flowpath. The at least one valve and the at least one restriction are positioned to create a lubricant pressure difference biasing the rotors away from a discharge end of the case.

9. 发明授权

US09611847B2 Aircraft main engine fuel pump with multiple gear stages using shared journals 有权
公开(公告)号：US09611847B2
公开(公告)日：2017-04-04
申请号：US13918243
申请日：2013-06-14
申请人： Simon Martin-Dye
发明人： Simon Martin-Dye
IPC分类号： F03C2/00 , F03C4/00 , F04C2/00 , F04C11/00 , F04C2/14 , F04C15/00 , F04C2/08 , F04C2/18
CPC分类号： F04C11/001 , F04C2/086 , F04C2/14 , F04C2/18 , F04C15/0023 , F04C15/0026 , F04C2210/1044 , F04C2240/52 , F04C2240/56
摘要： A multistage gear pump assembly includes first and second gear pumps that use common shafts and are axially separated by a fixed spacer within the housing. Pressurized bearings are provided at opposite axial ends of the first and second gear pumps. The second gear pump handles cruise and idle operations of the aircraft while the first gear pump stage assists in meeting higher demand modes of engine operation. Otherwise, the first gear pump is maintained at a minimal pressure to reduce energy consumption and still provide desired stability and eliminate issues associated with bearing oil whirl associated with prior known arrangements. When additional assistance is required, such as during takeoff, climb, or windmill relight, the first gear pump advantageously contributes to the increased pressure.

10. 发明申请

US20160169225A1 HYDRAULIC DEVICE 有权
标题翻译：液压装置
公开(公告)号：US20160169225A1
公开(公告)日：2016-06-16
申请号：US14360885
申请日：2013-06-27
申请人： Hiroaki Takeda
发明人： Hiroaki Takeda
IPC分类号： F04C2/18
CPC分类号： F04C2/18 , F04C2/084 , F04C2/086 , F04C15/0026 , F04C15/0042 , F04C2240/52 , Y10T74/19953
摘要： A hydraulic device at least has a pair of helical gears 20, 23, a body 3 containing the gears, bearing members 40, 44 supporting rotating shafts 21, 24 of the gears 20, 23, and cover plates 7, 8, 11 liquid-tightly fixed to both end surfaces of the body. The cover plate 8 has a cylinder hole 8a formed at a portion opposite to an end surface of the rotating shaft 21 of the gear 20 which receives two thrust forces Fma, Fpa in the same direction, and a piston 9 is inserted through the cylinder hole 8a. A working liquid in a high-pressure side is caused to act on a back surface of the piston 9 and thereby the piston 9 is pressed onto the end surface of the rotating shaft 21, thereby causing a drag almost balancing a resultant force of the two thrust forces Fma, Fpa to act on the rotating shaft 21. The thrust forces Fma, Fpa acting on the gear 20 are cancelled by this drag.
摘要翻译：液压装置至少具有一对斜齿轮20,23，包含齿轮的主体3，支撑齿轮20,23的旋转轴21,24的支承部件40,44以及支撑齿轮20,23的盖板7,8,11。紧紧地固定在身体的两个端面上。盖板8具有形成在与齿轮20的旋转轴21的端面相反的部分处的气缸孔8a，其在相同方向上接收两个推力Fma，Fpa，并且活塞9穿过气缸孔 8a。使高压侧的工作液体作用在活塞9的后表面上，从而使活塞9压在旋转轴21的端面上，从而使两者之间的合力几乎平衡推力Fma，Fpa作用在旋转轴21上。作用在齿轮20上的推力Fma，Fpa被该阻力取消。

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