GAS SAFETY DEVICE - PANASONIC IP MAN CO LTD

Title:

GAS SAFETY DEVICE

Document Type and Number:

WIPO Patent Application WO/2019/235291

Kind Code:

A1

Abstract:

A gas safety device according to the present invention is provided with: a flow passage (1) for allowing a gas to flow therein; a flow-volume measurement unit (15) for measuring a flow volume of the gas flowing in the flow passage (1); an absolute-pressure pressure sensor (5) that is disposed in the interior of the flow passage (1) and that measures the absolute pressure of the gas; an absolute-pressure pressure sensor (7) that is disposed outside the flow passage (1) and that measures the absolute pressure of the atmospheric pressure; and a gas-pressure determination unit (8) for measuring a change in a gas supply pressure from the measured values of the absolute-pressure pressure sensor (5) and the absolute-pressure pressure sensor (7). The gas safety device is further provided with: a shutoff valve (2) for shutting the flow passage (1); and a control circuit (9) that controls the flow-volume measurement unit (15) and that, when an abnormality is determined on the basis of the gas flow volume measured by the flow-volume measurement unit (15) or a change in the gas supply pressure measured by the gas-pressure determination unit 8, shuts the flow passage (1) by means of the shutoff valve (2).

Inventors:

KAYABA TAKASHI
FUJII YUJI
YASUDA KENJI
NAKAMURA MASANORI
ANAN YUKI

Application Number:

PCT/JP2019/020983

Publication Date:

December 12, 2019

Filing Date:

May 28, 2019

Export Citation:

Click for automatic bibliography generation Help

Assignee:

PANASONIC IP MAN CO LTD (JP)

International Classes:

G01F3/22; G01F1/66; G01L15/00

Foreign References:

JP2002090188A	2002-03-27
JP2012007977A	2012-01-12
JP2006520901A	2006-09-14
JP2003507702A	2003-02-25
JP2009543093A	2009-12-03
JP2014098563A	2014-05-29

Other References: