FLOW MEASUREMENT STRUCTURE AND FLOW MEASUREMENT DEVICE

WIPO Patent Application WO/2012/014633

A1

The disclosed flow measurement device (1) is provided with a main flow channel (5) through which a fluid flows, and a secondary flow channel unit (20) where fluid is diverted from the main flow channel (5), supplied to a flow amount detection element (12) and thereafter returned to the main flow channel (5). The secondary flow channel unit (20) is provided with a diversion flow channel (23) through which a fluid is diverted from the main flow channel (5) and returned to the main channel (5) without said fluid being supplied to the flow amount detection element (12), and a detection channel (27) in which said fluid is diverted from the diversion flow channel (23) and provided to the flow amount detection element (12). The diversion flow channel (23) is provided with a smooth flow part (45) in which said fluid flows smoothly between the two ends connecting to the main flow channel (5), and a first chamber (41) and a second chamber (42) which, adjacent to the smooth flow part (45), are divided by a partition (43) provided so as to obstruct flow of the fluid. The two ends of the detection channel (27) are connected to the first chamber (41) and the second chamber (42).

UEDA NAOTSUGU
YAMAMOTO KATSUYUKI
NOZOE SATOSHI
MAEDA SHUJI
TSUKUMA YUJI

PCT/JP2011/065292

February 02, 2012

July 04, 2011

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OMRON TATEISI ELECTRONICS CO (JP)
UEDA NAOTSUGU
YAMAMOTO KATSUYUKI
NOZOE SATOSHI
MAEDA SHUJI
TSUKUMA YUJI

G01F1/00; G01F1/684; G01F1/692

JP2007003387A	2007-01-11
JP2006308518A	2006-11-09
JP2009069002A	2009-04-02
JP2006308518A	2006-11-09

MASUI, Yoshihisa et al. (JP)
Yoshihisa Masui (JP)

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