Title:
PHYSICAL QUANTITY MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/156045
Kind Code:
A1
Abstract:
According to the present invention, in a housing (21), a measurement channel (32) has a sensor path (405), an upstream curved path (406), and a downstream curved path (406). A flow rate sensor (22) is provided in the sensor path (405). The upstream curved path (406) extends toward a measurement inlet (35) from the sensor path (405), and the downstream curved path (407) extends toward a measurement outlet (36) from the sensor path (405). The inner surface of the housing (21) includes an upstream outcurve surface (411) forming the curve of the upstream curved path (406) from the outside, and a downstream outcurve surface (421) forming the curve of the downstream curved path (406) from the outside. In the measurement channel (32), the recessed degree of the downstream outcurve surface (421) is greater than the recessed degree of the upstream outcurve surface (411). Accordingly, the measurement accuracy of a flow rate can be raised.
Inventors:
ITO KENGO (JP)
AKUZAWA HIROYUKI (JP)
TAGAWA HIROSHI (JP)
KAIFU TERUAKI (JP)
KITAHARA NOBORU (JP)
AKUZAWA HIROYUKI (JP)
TAGAWA HIROSHI (JP)
KAIFU TERUAKI (JP)
KITAHARA NOBORU (JP)
Application Number:
PCT/JP2019/003953
Publication Date:
August 15, 2019
Filing Date:
February 05, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01F1/684
Foreign References:
| JP2006501452A | 2006-01-12 | |||
| JP2017053787A | 2017-03-16 | |||
| JP2010101889A | 2010-05-06 | |||
| JP2010525347A | 2010-07-22 | |||
| JP2011075361A | 2011-04-14 | |||
| US20170003154A1 | 2017-01-05 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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