[특허]Liquid flow meter

Liquid flow meter 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01F-001/00
출원번호	US-0279833 (1994-07-25)
발명자 / 주소	Silverman Ira (Newhall CA) Patel Tulsidas R. (West Hills CA)
출원인 / 주소	Futureflo Systems, Inc. (Newbury Park CA 02)
인용정보	피인용 횟수 : 57 인용 특허 : 0

초록 ▼

An improved liquid flow meter for measuring moderate to low liquid flow rates with improved accuracy and minimal back pressure. The flow meter has a housing with two halves, a cover and a body, that fit together around a impeller so that liquid may flow and turn the impeller. Impeller performance is improved by use of a tapered inlet nozzle that increases liquid velocity while minimizing back pressure. Liquid is introduced tangent to the impeller by the tapered inlet nozzle to enhance initial impeller turning. The impeller registers the liquid flow by turning. The turning of the impeller is sensed electronically. Plenums are used for inlet and outlet flow to create regions of relatively consistent pressure regardless of duct location and orientation. The impeller fins are almost as wide as the impeller chamber to prevent liquid flow around the impeller. A magnet is encapsulated within the impeller that gives rise to a detectable electromagnetic flux when the impeller turns. A wire coil is used to detect the changing magnetic flux generated by the turning magnet. The wire coil uses an iron core to enhance flux detection. A pre-programmed microprocessor detects the coil\s response and calculates pertinent information such as cumulative liquid flow. The microprocessor also keep track of the time since last reset. Flow meter status and warnings are transmitted to the user via indicators.

대표청구항 ▼

A fluid flow meter comprising: a. a main housing; b. a cylindrical impeller chamber comprising a pair of planar walls and a cylindrical wall between the planar walls; c. an impeller received within the impeller chamber, the impeller comprising a central hub and multiple vanes extending outward from the central hub, the impeller having an axis of rotation, the outside diameter of the impeller being slightly less than the diameter of the cylindrical wall, the impeller having an axis of rotation and turning freely about the axis of rotation; d. a magnet mounted in and rotating with the impeller; e. an inlet chamber in the main housing adjacent the impeller chamber, and an inlet extending from outside the main housing into the inlet chamber through which fluid flows from outside the main housing into the inlet chamber; f. a nozzle extending from the inlet chamber into the impeller chamber at an angle to the axis of rotation of the impeller, the nozzle increasing the velocity of the fluid flow from the inlet chamber into the impeller chamber, the fluid flow causing the impeller to rotate in a predetermined direction about its axis of rotation; g. an outlet chamber in the main housing, an exit in one of the planar walls of the impeller housing communicating with the outlet chamber, the exit chamber being located adjacent the nozzle around the impeller chamber in the direction of rotation of the impeller so that the fluid directed by the nozzle between the vanes travels most of the distance around the impeller chamber from the nozzle to the exit chamber; and h. a magnetic sensor mounted in the housing for counting rotations of the magnet in the impeller.

이 특허를 인용한 특허 (57)

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Brost, Ronald David, Flowmeter and a use thereof for measuring fluid flow independently of fluid's state property.
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Winter,Dan, Meter register and meter register tampering detector.
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Winter, Dan; Koch, Ronald N., Meter register and remote meter reader utilizing a stepper motor.
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Winter, Dan; Koch, Ronald N., Meter register and remote meter reader utilizing a stepper motor.
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Winter, Dan, Meter register transmitting flow rate warning.
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Winter, Dan, Meter register transmitting flow rate warning.
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Clack Robert A. ; Hemp Melvin R. ; McPherson W. Roger, Method and apparatus for monitoring liquid flow through an enclosed stream.
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Grzonka, Michael T.; Burke, Aaron, Powered cartridges and other devices within housings.
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Grzonka, Michael T.; Burke, Aaron, Powered cartridges and other devices within housings.
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Larkner, Thomas J.; Peake, Steven C.; Chomka, Chester E.; Tilp, Joseph F.; Willman, Eric J.; Leppert, Kerry W.; Timmerman, Tina M., Water purification system and method including dispensed volume sensing and control.
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Larkner,Thomas J.; Peake,Steven C.; Chomka,Chester E.; Tilp,Joseph F.; Willman,Eric J.; Leppert,Kerry W.; Timmerman,Tina M., Water purification system and method including dispensed volume sensing and control.
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Thomas J. Larkner ; Steven C. Peake ; Chester E. Chomka ; Joseph F. Tilp ; Eric J. Willman ; Kerry W. Leppert ; Tina M. Timmerman, Water purification system and method including dispensed volume sensing and control.
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Giordano Edward C. ; Graves Thomas W. ; Jennings James M. ; Vander Berg Mark ; Storer William James A. ; Gibbs Douglas R. ; Lonsinger Douglas A., Water treatment device with volumetric and time monitoring features.
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Giordano Edward C. ; Graves Thomas W. ; Jennings James M. ; Vander Berg Mark ; Storer William James A. ; Gibbs Douglas R. ; Lonsinger Douglas A., Water treatment device with volumetric and time monitoring features.
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Giordano, Edward C.; Graves, Thomas W.; Jennings, James M.; Vander Berg, Mark; Storer, William James A.; Gibbs, Douglas R.; Lonsinger, Douglas A., Water treatment device with volumetric and time monitoring features.
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Giordano, Edward C.; Graves, Thomas W.; Jennings, James M.; Vander Berg, Mark; Storer, William James A.; Gibbs, Douglas R.; Lonsinger, Douglas A., Water treatment device with volumetric and time monitoring features.
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Giordano Edward C. ; Graves Thomas W. ; Jennings James M. ; Vander Berg Mark ; Storer William James A. ; Gibbs Douglas R. ; Lonsinger Douglas A., Water treatment device with volumetric monitoring features.
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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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안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Liquid flow meter 원문보기

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대표청구항 ▼

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이 특허를 인용한 특허 (57)

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Liquid flow meter 원문보기

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이 특허를 인용한 특허 (57)

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