[특허]Energy recovery and reuse techniques for a hydraulic system

[미국특허] Energy recovery and reuse techniques for a hydraulic system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16D-031/02
출원번호	US-0939861 (2007-11-14)
등록번호	US7905088 (2011-03-01)
발명자 / 주소	Stephenson, Dwight B. Hamkins, Eric P. Pfaff, Joseph L. Tabor, Keith A.
출원인 / 주소	INCOVA Technologies, Inc.
대리인 / 주소	Quarles & Brady LLP
인용정보	피인용 횟수 : 24 인용 특허 : 0

초록 ▼

A hydraulic system has a valve assembly with two workports coupled to chambers of first and second cylinders which are connected mechanically in parallel to a machine component. A separation control valve is connected between first chambers of both cylinders, and a shunt control valve is connected between the workports. A recovery control valve couples an accumulator to the first chamber of the second cylinder. Opening and closing the valves in different combinations routes fluid from one or both cylinders into the accumulator where the fluid is stored under pressure, and thereafter enables stored fluid to be used to power one or both cylinders. The shunt control valve is used to route fluid exhausting from one chamber of each cylinder to the other chambers of those cylinders. Thus the hydraulic system recovers and reuses energy in various manners.

대표청구항 ▼

What is claimed is: 1. A hydraulic system for a machine and having an energy recovery apparatus, said hydraulic system comprising:a supply conduit conveying pressurized fluid;a return conduit conveying fluid to a tank;first and second cylinders mechanically connected in parallel to operate a component of the machine and each having a first chamber and a second chamber;a cylinder separation control valve in fluid communication with and controlling fluid flow between the first chamber of the first cylinder and the first chamber of the second cylinder, wherein a node is formed between the first chamber of the first cylinder and cylinder separation control valve;a control valve assembly having a first workport and a second workport, the first workport being connected to the node, the second workport is connected to the second chambers of both the first and second cylinders, and wherein operation of the control valve assembly connects each of first and second workports selectively to the supply conduit and the return conduit;an accumulator; anda recovery control valve directly connected to both the accumulator and the first chamber of the second cylinder.

이 특허를 인용한 특허 (24) 인용/피인용 타임라인 분석

Vigholm, Bo; Ekvall, Andreas; Heybroek, Kim, Arrangement for charging an accumulator.
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Zhang, Jiao; Ma, Pengfei; Murugesan, Vickram; Shang, Tonglin; Hillman, Bryan Jacob, Boom cylinder dig flow regeneration.
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Joo, Choon Shik, Control circuit and control method for boom energy regeneration.
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Childs, Willard D., Desalination system with energy recovery and related pumps, valves and controller.
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d'Artenay, Matthew D.; Childs, Willard D.; Vanderloop, Gerard J.; Connor, Jr., Michael J., Desalination system with energy recovery and related pumps, valves and controller.
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Zhang, Jiao; Ma, Pengfei; Shang, Tonglin; Wen, Gang Victor; Nelson, Bryan Edward; Chen, Dayao, Electro-hydraulic system for recovering and reusing potential energy.
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Lind, Randall F.; Love, Lonnie J., Energy efficient fluid powered linear actuator with variable area.
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Lind, Randall F.; Love, Lonnie J., Energy efficient fluid powered linear actuator with variable area and concentric chambers.
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Weber, Robert; Helfrich, Joseph; Luvaas, John, Energy management system for heavy equipment.
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Ma, Pengfei; Shang, Tonglin; Zhang, Jiao; Chen, Dayao; Wen, Gang Victor, Energy recovery system for hydraulic machine.
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Wen, Gang Victor; Ma, Pengfei; Zhang, Jiao; Shang, Tonglin, Energy recovery system having integrated boom/swing circuits.
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Zhang, Jiao; Schwab, Michael; Ma, Pengfei, Hybrid apparatus and method for hydraulic systems.
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Hendrix, Gottfried; Mehling, Hermann; Koeckemann, Albert, Hydraulic arrangement for supplying a consumer.
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Sivaramakrishnan, Shyam; Anderson, Todd Alan; D'Artenay, Matthew David; Kingsley, Robert Bruce, Hydraulic control system for a reverse osmosis hydraulic pump.
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Sugano, Naoki; Hori, Naoto; Michida, Takaharu, Hydraulic drive apparatus for work machine.
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Sugano, Naoki; Hori, Naoto; Michida, Takaharu, Hydraulic drive apparatus for work machine.
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Wen, Gang, Hydraulic system and control logic for collection and recovery of energy in a double actuator arrangement.
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Carlin, Jerry Faye; Ireton, Robin Francis; Gehlhoff, Wade Leo; Pedersen, Leif, Load energy assist and horsepower management system.
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Tveita, Johannes Tore, Method and device for regulating a pressure in a hydraulic system.
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Morinaga, Jun; Kawaguchi, Tadashi; Inoue, Hiroaki, Power generation control method of hybrid construction machine and hybrid construction machine.
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Marschke, Dean David, Rotary control valve for reverse osmosis feed water pump with energy recovery.
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Sivaramakrishnan, Shyam; Anderson, Todd Alan; d'Artenay, Matthew David; Marschke, Dean David, System and method for controlling motion profile of pistons.
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Zhang, Jiao; Chen, Dayao; Peterson, Jeremy T.; Knussman, Michael L., System and method for hydraulic energy recovery.
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Beschorner, Matthew J.; Johnson, Bryan A.; Janson, Brett J.; Barnes, Brandon Z.; Cesur, Rustu, Void protection system.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Energy recovery and reuse techniques for a hydraulic system 원문보기