Pressure-sensor device

G - Physics – 01 – L

Patent

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Details

G01L 9/00 (2006.01)

Patent

CA 2670753

A pressure-sensor device ( 1 ) comprises: - a pressure-sensitive component (9) having a body, defined in which is a blind cavity, and having a membrane portion (9a), operatively associated to which is a detection element (R); and - a connection structure (2), which has a duct in communication with the cavity of the pressure-sensitive component (9) and is to receive a fluid, a pressure of which is to be detected. The connection structure (2) comprises a supporting body (2a) of the pressure-sensitive component (9), which defines a respective passage (2b), and a compressible element (12, 18) that is designed to be in contact with the fluid and is configured for compensating possible variations of volume thereof. The compressible element (12, 18) is positioned at least in part within the cavity (1 1) of the pressure-sensitive component (9) and/or in a stretch of the passage (2b) of the supporting body (2a) that is close to the cavity (11 ) of the pressure-sensitive component (9).

L'invention concerne un dispositif capteur de pression (1) qui comprend : un composant sensible à la pression (9) qui comprend un corps dans lequel est définie une cavité aveugle, et qui comporte une partie membrane (9a), à laquelle est fonctionnellement associé un élément de détection (R); et une structure de connexion (2), qui comprend une conduite en communication avec la cavité du composant sensible à la pression (9) et qui est conçue pour recevoir un fluide, dont la pression est à détecter. La structure de connexion (2) comprend un corps de support (2a) du composant sensible à la pression (9), qui définit un passage respectif (2b), et un élément compressible (12, 18) conçu pour être en contact avec le fluide et pour compenser les éventuelles variations de volume de celui-ci. L'élément compressible (12, 18) est positionné au moins en partie à l'intérieur de la cavité (11) du composant sensible à la pression (9) et/ou dans une partie allongée du passage (2b) du corps de support (2a) à proximité de la cavité (11 ) du composant sensible à la pression (9).

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