Title:
AIR FLOW RATE MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/045119
Kind Code:
A1
Abstract:
This air flow rate measurement device comprises: a housing (30) having a base surface (41), a back surface (42), a first side surface (51), a second side surface (52), a flow rate flow channel inlet (431), a flow rate flow channel outlet (432), flow rate flow channels (43, 44), and a physical quantity flow channel inlet (500); an air flow rate detection unit (75); a substrate (76); and a physical quantity detection unit (81) mounted on a substrate surface (761). The physical quantity flow channel inlet includes a first inner surface (61), a second inner surface (62), a third inner surface (63), and a fourth inner surface (64). The physical quantity detection unit outputs a signal indicating the physical quantity of air flowing through a substrate flow channel (90). The substrate, the first inner surface, the third inner surface, or the fourth inner surface reduces the flow channel area of the substrate flow channel in a direction from the base surface to the back surface.
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Inventors:
MASHITA HAJIME (JP)
AKUZAWA HIROYUKI (JP)
AKUZAWA HIROYUKI (JP)
Application Number:
PCT/JP2020/033288
Publication Date:
March 11, 2021
Filing Date:
September 02, 2020
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02D35/00; G01F1/68; G01K13/02; G01L7/00; G01N27/00
Foreign References:
| JPS6154966B2 | 1986-11-26 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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