Gas safety device
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United States of America Patent
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Oct 25, 2022
Grant Date -
Jan 14, 2021
app pub date -
Mar 14, 2019
filing date -
Mar 30, 2018
priority date (Note) -
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Abstract
A gas safety device includes: flow path through which a gas flows; ultrasonic sensor for measuring a flow rate of the gas flowing through flow path; flow rate calculator that calculates a flow rate measurement data pieces from a measurement value of the flow rate measured by ultrasonic sensor; and leakage detector that detects a minor leakage of the gas. The gas safety device further includes: pulsation recognizer that recognizes that pulsation is occurring when a fluctuation in the flow rate measuring data pieces calculated by flow rate calculator is greater than or equal to a predetermined value; and pulsating flow rate corrector that corrects, when pulsation recognizer determines that the pulsation is occurring, the flow rate measurement data piece by a predetermined value. Furthermore, when pulsation recognizer determines that the pulsation is occurring, leakage detector determines whether a leakage is present using the flow rate measurement data piece corrected by pulsating flow rate corrector.
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