GAS APPLIANCE FLOW RATE ESTIMATION DEVICE AND GAS APPLIANCE FLOW RATE ESTIMATION METHOD

• Main Authors: KAMAKURA NOBUHITO, KOGAI KAZUFUMI
• Format: Patent
• Language: English; Japanese
• Published: 18.02.2022
• Subjects: MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

To provide a gas appliance flow rate estimation device capable of appropriately estimating a flow rate value of a gas appliance even when an actual flow rate of gas changes slowly.SOLUTION: A gas appliance flow rate estimation device 10 includes: a detection unit 11 that detects an actual flow rate of gas flowing toward a gas appliance 3; a slow flow rate calculation unit 12 that calculates a slow flow rate, which is a difference between the actual flow rate of the gas this time and a total flow rate value of the gas appliance previous time; a change flow rate calculation unit 13 that calculates a change flow rate that is a difference between the actual flow rate of the gas this time and an actual flow rate of the gas previous time; a flow rate determination unit 14 that determines whether or not the change flow rate calculated is equal to or higher than a predetermined flow rate; and an estimation unit 15 that uses a change flow rate as the flow rate value of a new gas appliance 3 if the change flow rate that exceeds the predetermined flow rate increases, and deletes the flow rate value closest to the value based on the change flow rate and the slow flow rate from all the stored flow rate values of the gas appliance 3 when the change flow rate that exceeds the predetermined flow rate decreases.SELECTED DRAWING: Figure 1 【課題】ガスの実流量が緩やかに変化する場合でも、ガス器具の流量値を適切に推定することができるガス器具流量推定装置を提供する。【解決手段】ガス器具流量推定装置１０は、ガス器具３に向けて流れるガスの実流量を検出する検出部１１と、今回のガスの実流量と前回のガス器具の合計流量値との差分となる緩流量を算出する緩流量算出部１２と、今回のガスの実流量と前回のガスの実流量との差分となる変化流量を算出する変化流量算出部１３と、算出された変化流量が予め設定された所定流量以上であるか否かを判定する流量判定部１４と、所定流量以上となる変化流量が増加量となる場合、その変化流量を新たなガス器具３の流量値とし、所定流量以上となる変化流量が減少量となる場合、記憶されている全てのガス器具３の流量値の中から、変化流量及び緩流量に基づいた値に最も近い流量値を削除する推定部１５とを備える。【選択図】図１