Thermal flow meter including fixation wall and concave recess portion for storing end of supporting body
US9605986B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2013 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Jan 10, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F15/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is to improve measurement accuracy of a thermal flow meter. In a thermal flow meter of the invention, a circuit package 400 includes a processing unit 604 in which a passage 605 and a circuit are disposed. An air flow sensing portion 602 is disposed in the passage 605. A fixing portion 372 is integrally formed with and fixed to the circuit package 400 and forms a bypass passage. The passage 605 of the circuit package 400 is arranged inside the bypass passage. In the bypass passage, a storage portion 384 having a concave portion 383 is formed to face the fixing portion 372. At least a part of the leading end 401 of the circuit package 400 is contained in the concave portion 383 of the storage portion 384.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.