[특허]Efficiency fluid pumping system including sequential unloading of a plurality of pumps by a single pressure responsive c

Efficiency fluid pumping system including sequential unloading of a plurality of pumps by a single pressure responsive c 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04B-049/08
출원번호	US-0959036 (1978-11-08)
발명자 / 주소	Rannenberg George C. (Canton CT)
출원인 / 주소	United Technologies Corporation (Hartford CT 02)
인용정보	피인용 횟수 : 25 인용 특허 : 0

초록 ▼

In a fluid pumping system in which a fluid is pumped from a fluid supply to a load, two continuously driven fixed displacement pumps are operated in parallel to provide the pumping action. The two pumps are arranged with a common inlet, and with a common outlet, the flow delivered to the load from one of the two pumps passing through a check valve upstream of the common outlet. The fluid flow is regulated to provide a constant pressure by sequentially bypassing fluid around each pump through separate pump bypass ducts. This sequential fluid bypassing or pump unloading is effected by a single control responsive to the flow requirements of the load necessary to maintain that constant pressure. The pump whose delivered flow outlet contains the check valve is the pump whose flow is bypassed initially when less than full pumping capacity is desired. During maximum flow demand operation, both pumps are delivering against full delivery pressure. During low flow demand operation only the pump without the check valve delivers against full pressure, the other pump being operated with essentially no pressure load. In a preferred embodiment the pump which contains the check valve is of considerably larger displacement than the other pump. The result is a pumping system with significantly reduced pump input power during periods of low flow demand.

대표청구항 ▼

In a fluid pumping system receiving fluid from a low pressure source and delivering said fluid to a load at a higher pressure; first and second positive displacement, fixed displacement pumps; means for powering said pumps; means for ducting fluid from said source to both pumps simultaneously said pumps passing the delivered flow therefrom through separate outlet ducts to a common delivered junction; a first bypass means including a first bypass duct connected to the pump outlet of said first pump and including a first valve means therein, said first valve means being responsive to a reduction in the delivered flow requirements of said load and opening to permit excess flow from said first pump to pass through said first bypass duct to said fluid source; and second bypass means including a second bypass duct connected to the pump outlet of said second pump and including a second valve means therein, said second valve means being responsive to a further reduction in the delivered flow requirements of said load and opening to permit excess flow from said second pump to pass through said second bypass duct to said fluid source; said first and second valve means comprising a single actuator element responsive to a signal indicative of a predetermined outlet fluid pressure whereby actuation of said actuator element initially opens said first valve means, and whereby further actuation thereof opens said second valve means.

이 특허를 인용한 특허 (25)

Brocard, Jean-Marie; Deldalle, Regis Michel Paul; Galozio, Philippe; Martini, Michel; Varizat, Alain Michel, Aircraft engine fuel supply.
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Cass Michael Andrew ; Short Keith Everett, Aircraft engine fuel system mounting assembly.
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Martin-Dye, Simon, Aircraft main engine fuel pump with multiple gear stages using shared journals.
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Markunas Albert L. (Roscoe IL), Dual pump controls.
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Kleckler, Joel W., Dual-pump supply system with bypass-controlled flow regulator.
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Killion David L., Energy efficient fluid pump.
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Killion,David L., Energy efficient fluid pump.
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Reuter, Charles E.; Price, Aaron V.; Haugsjaahabink, Todd; Sato, Yukinori; Wichowski, John J., Flow control system and method for controlling two positive displacement pumps.
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Baker, Carthel C.; Baryshnikov, Dmitriy, Flow sensing dual pump switching system and method.
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Baker, Carthel C., Fuel delivery and control system including a positive displacement actuation pump with a variable pressure regulator supplementing a fixed displacement main fuel pump.
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Baker, Carthel C.; Wollschlager, Joe F., Fuel delivery and control system including a variable displacement actuation pump supplementing a fixed displacement main pump.
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LeBlanc, Pascal; Rodrigues, José Roland, Fuel supply installation of an aircraft turbojet.
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Yates,Martin Kenneth; Elliott,Philip Laurence, Fuel supply system.
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Bickley, Daniel James, Fuel system.
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Zielinski, Edward; Futa, Paul W.; Tuttle, David, High efficiency, high pressure gas turbine engine fuel supply system.
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Futa, Paul W.; Zielinski, Edward; Portolese, Larry; Tuttle, David, High pressure, multiple metering zone gas turbine engine fuel supply system.
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Garry, Michael P., Integral plus proportional dual pump switching system.
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Lipinski, John; Schott, David K.; Rodriguez, Fredd; Fukumoto, Paul, Liquid fuel reverse purge.
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Chana Howard E. (Troy MI), Multistage gear pump and control valve arrangement.
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Ono, Yasunori; Kai, Keiichi; Fujiki, Kenichi; Yamane, Kosuke, Oil pump pressure control device.
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Thornelow Alec,GBX ; Brighton Derek Keith,GBX ; Williamson Matthew,GBX, Positive displacement pump systems with a variable control orifice.
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Roche, Richard M., Power sensing regenerator.
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Saito, Takahiko; Kagawa, Atsushi; Tsutsui, Hayato, Pump apparatus and marine vessel propelling machine.
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Eick,Christopher D.; Mahoney,Timothy D.; Jones,David D.; Lorenz,William, Reduced-weight fuel system for gas turbine engine, gas turbine engine having a reduced-weight fuel system, and method of providing fuel to a gas turbine engine using a reduced-weight fuel system.
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Lounsberry, Peter C.; Brown, Devin W., Rotociprocating pump.
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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

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Efficiency fluid pumping system including sequential unloading of a plurality of pumps by a single pressure responsive c 원문보기

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Efficiency fluid pumping system including sequential unloading of a plurality of pumps by a single pressure responsive c 원문보기

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