Title:
FLOW RATE SENSOR AND FLOW RATE DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/085194
Kind Code:
A1
Abstract:
Provided are a flow rate sensor and a flow rate detection method which make it possible to detect the flow rate of fluid in a wide flow rate range. A flow rate sensor 10 for detecting the flow rate of water in a water pipe 2 is provided with a detection unit 100 having: bodies 210, 310 that can be deformed upon reception of pressure of fluid; and sensor units 220, 320 that detect the deformation amounts of the bodies 210, 310. The bodies 210, 310 have: deformation parts 212, 312 to which the sensor units 220, 320 are provided; and pressure reception parts 213, 313 that deform the deformation parts 212, 312 upon reception of pressure of fluid. The detection unit 100 includes a high-sensitivity detection unit 200 and a low-sensitivity detection unit 300. The ratio of a pressure reception area of the pressure reception part 213 of the high-sensitivity detection unit 200 with respect to the rigidity of the deformation part 212 of the high-sensitivity detection unit 200 is larger than the ratio of a pressure reception area of the pressure reception part 313 of the low-sensitivity detection unit 300 with respect to the rigidity of the deformation part 312 of the low-sensitivity detection unit 300.
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Inventors:
NAKAHIRA YU (JP)
TSUKAHARA TAKAYUKI (JP)
MORIMURA MASARU (JP)
TSUKAHARA TAKAYUKI (JP)
MORIMURA MASARU (JP)
Application Number:
PCT/JP2022/041068
Publication Date:
May 19, 2023
Filing Date:
November 02, 2022
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
G01P5/04; G01F1/28
Foreign References:
| JPH08114617A | 1996-05-07 | |||
| JP2006023240A | 2006-01-26 | |||
| DE4215258A1 | 1993-11-11 | |||
| JP2017003422A | 2017-01-05 | |||
| JPH01150859A | 1989-06-13 |
Attorney, Agent or Firm:
NAGATA Toyohiko et al. (JP)
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