PHYSICAL QUANTITY MEASUREMENT DEVICE

WIPO Patent Application WO/2023/238874

A1

The purpose of the present disclosure is to provide a physical quantity measurement device that can stably measure gas flow rate or gas component concentration even in a highly humid environment in which the fluid to be measured contains water droplets. The physical quantity measurement device (22) comprises a flow path main body (11), a flow rate measurement unit, an upstream opening part (17) , a downstream opening part (18), and an auxiliary flow path (13). The flow path main body (11) has a main flow path (9). The flow rate measurement unit is provided in the main flow path (9). The upstream opening part (17) is provided at the upstream side of the main flow path (9). The downstream opening part(18) is provided at the downstream side of the main flow path (9). The auxiliary flow path (13) is provided on the outer side of the main flow path (9) and connects the upstream opening part (17) to the downstream opening part (18). The auxiliary flow path (13) has a constricting part (27) that constricts the flow path cross section in the flow path.

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KONISHI RYOHEI
MIYOSHI ASAKO
NAKABAYASHI YUUJI
SATOU MASATO
MATSUDA MASATAKA
TAKAKURA YUYA

PCT/JP2023/021057

December 14, 2023

June 06, 2023

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PANASONIC IP MAN CO LTD (JP)

G01F1/66; G01N29/024; G01N29/32

JP2022025751A	2022-02-10
JP2007240159A	2007-09-20
JP2004144563A	2004-05-20

HOKUTO PATENT ATTORNEYS OFFICE (JP)

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