[특허]Flow-control system having a wide range of flow-rate control

Flow-control system having a wide range of flow-rate control 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-031/363
출원번호	US-0309802 (1981-10-08)
발명자 / 주소	Kowalski Slawomir (Rockaway NJ)
출원인 / 주소	Marotta Scientific Controls, Inc. (Boonton NJ 02)
인용정보	피인용 횟수 : 27 인용 특허 : 0

초록 ▼

The invention contemplates a system of relatively wide-range solenoid control of pressure-fluid flow from a high-pressure upstream source to a downstream load. In a first range of relatively low rates of flow, the system utilizes the solenoid to actuate a pilot valve for controlled exclusive delivery of pressure fluid to the load, via a throttling orifice; in a second range of higher rates of flow, the pressure drop across the throttling orifice becomes sufficiently great to enable pilot-delivery pressure, upstream from the throttling orifice, to open a main-valve line from the source to the load. The arrangement is such that solenoid-actuating force variation within the first range produces a first characteristic of flow-rate delivery to the load, and is also such that solenoid-actuating force variation beyond the first range produces a second and steeper characteristic of flow-rate delivery to the load.

대표청구항 ▼

In combination, a pilot valve and a main valve for controlling delivery of pressure fluid from an upstream source to a downstream load; said pilot valve comprising a pilot-valve body with a passage between an inlet connected to said source and an outlet-line connection and having a valve-member seat therebetween, a flow restriction between said seat and said outlet-line connection, a pilot-valve member coacting with said seat, solenoid-operated means for applying to said pilot-valve member a valve-opening force proportional to solenoid-excitation, and fluid-pressure operated means differentially responsive to pressure on opposite sides of said flow restriction for establishing a constant delivery of pilot-valve outlet flow in said outlet-line connection for a given solenoid excitation and substantially independent of changes in source pressure; said main valve comprising a main-valve body having a passage between an inlet connected to said source and an outlet-line connection to said load and having a valve-member seat therebetween, a flow restriction in said outlet-line connection, whereby near said last-mentioned restriction there exists a first region of relatively low-pressure main-valve outlet fluid flow and a second region of relatively high-pressure main-valve outlet fluid flow upstream from said main-valve outlet flow restriction, fluid-pressure responsive means for operatively positioning said main-valve member and differentially responsive to pressure on one side for developing main-valve opening force and on the other side for developing a balancing force in opposition to the opening force, and a connection from said second region to said other side for developing balancing force from main-valve outlet pressure sampled from said main-valve outlet restriction; first means including a throttling orifice connecting the pilot-valve outlet-line connection to said first region, and second means connecting the pilot-valve outlet-line connection to said one side of the fluid-pressure responsive operating means of said main valve; whereby, depending upon the excitation of said solenoid, pilot-valve flow will be delivered to said load essentially with a first characteristic of proportionality to solenoid excitation; and further whereby main-valve flow will be additionally delivered to said load essentially with a second and steeper characteristic of proportionality to solenoid excitation, the pilot-valve flow rate at which said second characteristic becomes operative being a function of the setting of said throttling orifice.

이 특허를 인용한 특허 (27)

Oklejas, Jr., Eli; Hunt, Jason B., Anti-cavitation throttle valve and method of operating the same.
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Milner, David V., Apparatus and method for regulating gas flow.
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Noël, Roger, Arrangement for controlling rock drilling.
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Ohmi, Tadahiro; Saito, Masahito; Hino, Shoichi; Shimazu, Tsuyoshi; Miura, Kazuyuki; Nishino, Kouji; Nagase, Masaaki; Sugita, Katsuyuki; Hirata, Kaoru; Dohi, Ryousuke; Hirose, Takashi; Shinohara, Tsutomu; Ikeda, Nobukazu; Imai, Tomokazu; Yoshida, Toshihide; Tanaka, Hisashi, Flow rate range variable type flow rate control apparatus.
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Ohmi, Tadahiro; Saito, Masahito; Hino, Shoichi; Shimazu, Tsuyoshi; Miura, Kazuyuki; Nishino, Kouji; Nagase, Masaaki; Sugita, Katsuyuki; Hirata, Kaoru; Dohi, Ryousuke; Hirose, Takashi; Shinohara, Tsutomu; Ikeda, Nobukazu; Imai, Tomokazu; Yoshida, Toshihide; Tanaka, Hisashi, Flow rate range variable type flow rate control apparatus.
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Ohmi, Tadahiro; Saito, Masahito; Hino, Shoichi; Shimazu, Tsuyoshi; Miura, Kazuyuki; Nishino, Kouji; Nagase, Masaaki; Sugita, Katsuyuki; Hirata, Kaoru; Dohi, Ryousuke; Hirose, Takashi; Shinohara, Tsutomu; Ikeda, Nobukazu; Imai, Tomokazu; Yoshida, Toshihide; Tanaka, Hisashi, Flow rate range variable type flow rate control apparatus.
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Ohmi, Tadahiro; Saito, Masahito; Hino, Shoichi; Shimazu, Tsuyoshi; Miura, Kazuyuki; Nishino, Kouji; Nagase, Masaaki; Sugita, Katsuyuki; Hirata, Kaoru; Dohi, Ryousuke; Hirose, Takashi; Shinohara, Tsutomu; Ikeda, Nobukazu; Imai, Tomokazu; Yoshida, Toshihide; Tanaka, Hisashi, Flow rate range variable type flow rate control apparatus.
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Jacobson, James D.; Bui, Tuan; Garchow, Stephen R.; Yardimci, Atif; Slepicka, James S., Fluid delivery system and flow control therefor.
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Jacobson, James D.; Bui, Tuan; Garchow, Stephen R.; Yardimci, Atif; Slepicka, James S., Fluid delivery system and flow control therefor.
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Jacobson, James D.; Bui, Tuan; Garchow, Stephen R.; Yardimci, Atif; Slepicka, James S., Fluid delivery system and flow control therefor.
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Tucker, Jeffrey C.; Andersen, Brian L.; Mittelstadt, Robert, Fluid flow control system, fluid delivery and control system for a fluid delivery line, and method for controlling pressure oscillations within fluid of a fluid delivery line.
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Skoglund Paul K., Fluid flow control valve and actuator for changing fluid flow rate.
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Ohmi, Tadahiro; Nishino, Kouji; Dohi, Ryousuke; Ikeda, Nobukazu; Nagase, Masaaki; Hirata, Kaoru; Sugita, Katsuyuki; Shinohara, Tsutomu; Hirose, Takashi; Imai, Tomokazu; Yoshida, Toshihide; Tanaka, Hisashi, Gasket type orifice and pressure type flow rate control apparatus for which the orifice is employed.
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Mirel Arthur G. (Scarsdale NY), Method and apparatus for controlling leaks in pressurized fluid systems.
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Noel,Roger, Monitoring valve, rock drilling apparatus and a method for controlling at least two hydraulic actuators to such a monitoring valve and rock drilling apparatus.
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Brown, Michael; Lockhart, John; Doss, Jeffrey S., Multifunctional restrictive valve.
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Brown, Michael; Lockhart, John; Doss, Jeffrey S., Multifunctional restrictive valve.
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Brown, Michael; Lockhart, John; Doss, Jeffrey S., Multifunctional restrictive valve.
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Hisatoshi Hirota JP, Pilot operated flow regulating valve.
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Coester Oskar H. W. (Rua David Francisco Mauricio 85 Porto Alegre ; Rio Grande do Sul BRX), Pneumatic propulsion system for freight and/or passenger vehicles.
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Gold Harold (3645 Tolland Rd. Shaker Heights OH 44122) Budzich Tadeusz (80 Murwood Dr. Moreland Hills OH 44022), Pressure regulating and on-off valve.
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Rowe, Carroll G., Pressure regulator.
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Nishino Koji,JPX ; Ikeda Nobukazu,JPX ; Morimoto Akihiro,JPX ; Minami Yukio,JPX ; Kawada Koji,JPX ; Dohi Ryosuke,JPX ; Fukuda Hiroyuki,JPX, Pressure type flow rate control apparatus.
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Ohmi Tadahiro,JPX ; Nishino Koji,JPX ; Ikeda Nobukazu,JPX ; Morimoto Akihiro,JPX ; Minami Yukio,JPX ; Kawada Koji,JPX ; Dohi Ryosuke,JPX ; Fukuda Hiroyuki,JPX, Pressure type flow rate control apparatus.
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Eidsmore Paul G., Spring loaded bellows regulator.
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Schmidt Lothar (Kerpen-Sindorf DEX) Schumbert Hans-Joachim (Wesseling DEX), System and method for regulating pressure in a container.
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Cho, Ho-Young, Two-stage air control valve.
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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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Flow-control system having a wide range of flow-rate control 원문보기

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Flow-control system having a wide range of flow-rate control 원문보기

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이 특허를 인용한 특허 (27)

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