JPS57208413A - Flow rate measuring device - Google Patents

Flow rate measuring device

Info

Publication number
JPS57208413A
JPS57208413A JP56095062A JP9506281A JPS57208413A JP S57208413 A JPS57208413 A JP S57208413A JP 56095062 A JP56095062 A JP 56095062A JP 9506281 A JP9506281 A JP 9506281A JP S57208413 A JPS57208413 A JP S57208413A
Authority
JP
Japan
Prior art keywords
flow rate
bypass
air
flow
buffer pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56095062A
Other languages
Japanese (ja)
Inventor
Sadayasu Ueno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56095062A priority Critical patent/JPS57208413A/en
Publication of JPS57208413A publication Critical patent/JPS57208413A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/72—Devices for measuring pulsing fluid flows

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To obtain the device which can measure the mean flow rate accurately without receiving the effect of pulsation of the flow rate, by providing a buffer pipe which is opened in the direction which forms a right angle with an air flow at the top end of a flow measuring bypass provided on an air intake path. CONSTITUTION:An air cleaner 2 having an intake hole 3, a housing 4, and a clenaer element 5 is attached to the upper end of the air intake path 1 having a main venturi 6. In said air intake path 1, the bypass 7, whose outlet port is opened at the main venturi 6, is provided. A thermal type flow meter 8 comprising a hot wire 9 and a cold wire 10 is provided in said bypass 7. The buffer pipe 13 having a stopper 14 is arranged at the upper stream side of the bypass 7 so that it forms a right angle with the air flow along the upper wall surface of the housing 4 of the air cleaner. Therefore even though pulsation and ripples are generated in the flow rate, they are reduced by the buffer pipe 13 and the mean flow rate can be accurately detected.
JP56095062A 1981-06-19 1981-06-19 Flow rate measuring device Pending JPS57208413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56095062A JPS57208413A (en) 1981-06-19 1981-06-19 Flow rate measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56095062A JPS57208413A (en) 1981-06-19 1981-06-19 Flow rate measuring device

Publications (1)

Publication Number Publication Date
JPS57208413A true JPS57208413A (en) 1982-12-21

Family

ID=14127529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56095062A Pending JPS57208413A (en) 1981-06-19 1981-06-19 Flow rate measuring device

Country Status (1)

Country Link
JP (1) JPS57208413A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63210724A (en) * 1987-02-27 1988-09-01 Honda Motor Co Ltd Air flowmeter
US5119672A (en) * 1989-07-08 1992-06-09 Robert Bosch Gmbh Air flow rate meter
US5406840A (en) * 1991-03-18 1995-04-18 British Gas Plc Supplying fluid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63210724A (en) * 1987-02-27 1988-09-01 Honda Motor Co Ltd Air flowmeter
US5119672A (en) * 1989-07-08 1992-06-09 Robert Bosch Gmbh Air flow rate meter
US5406840A (en) * 1991-03-18 1995-04-18 British Gas Plc Supplying fluid

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