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Patent Searching and Data


Title:
THERMAL FLOW METER
Document Type and Number:
WIPO Patent Application WO/2017/073276
Kind Code:
A1
Abstract:
The present invention addresses the problem of obtaining a thermal flow meter capable of reducing a pulsation error by preventing a discharge port and a main outlet from being blocked by a vortex during a transient period and reducing a difference between flow speed distributions in normal and pulsation states. This thermal flow meter 300 is provided with a housing 302 disposed in a main passage 124; and a sub passage 307 provided in the housing 302. In addition, in the housing 302, a first outlet 312 and a second outlet 313 of the sub passage 307 are disposed in a downstream end portion 316 of the housing 302, and a curved surface section 317 is provided adjacent to the first and second outlets 312 and 313.

Inventors:
MORINO TAKESHI (JP)
TASHIRO SHINOBU (JP)
UENODAN AKIRA (JP)
SAITO TOMOAKI (JP)
FUKAYA MASASHI (JP)
Application Number:
PCT/JP2016/079567
Publication Date:
May 04, 2017
Filing Date:
October 05, 2016
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
G01F1/684
Foreign References:
JPH06307906A1994-11-04
Attorney, Agent or Firm:
TODA YUJI (JP)
Yuji Toda (JP)
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