US 7,243,556 B2Granted

Airflow sensor

AssigneeE.H. Price Limited

InventorsBogna Gryc, Alfred Theodor Dyck

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Abstract

An airflow sensor for use in a conduit. The sensor comprises stacked first, second and third portions positioned, in use, in the conduit to define a hub and a plurality of tubes. The hub is centrally disposed in the conduit and has first and second interior chambers, a streamlined upstream-facing surface, a downstream-facing surface and a sidewall connecting said upstream and downstream facing surfaces, said sidewall having defined therein one or more static pressure ports through which the first chamber communicates with the conduit interior. The tubes extend radially from the hub, transverse to the flow. Each tube has a streamlined upstream-facing surface having defined therein one or more total pressure ports; a downstream-facing surface; and an interior passage communicating with the second chamber and communicating with the conduit interior through said total pressure ports. Each static pressure port is located downstream from a respective tube.

Claims20

Dependent claims

An airflow sensor for use in a flow conduit having a flow direction and upstream and downstream directions defined by the flow direction, the airflow sensor comprising a first portion, a second portion and a third portion disposed in stacked relation upon one another and positioned, in use, in the flow conduit to define:

a hub centrally disposed in said flow conduit, said hub having a first interior chamber, a second interior chamber, a streamlined upstream-facing surface, a downstream-facing surface and a sidewall connecting said upstream-facing surface and said downstream-facing surface, said sidewall having defined therein one or more static pressure ports, the first interior chamber communicating with the interior of the flow conduit through said one or more static pressure ports;
and
a plurality of sensor tubes extending radially outwardly from said hub, transverse to the flow direction, each tube having:
a streamlined upstream-facing surface having defined therein one or more total pressure ports;
a downstream-facing surface;
an interior passage communicating with the second interior chamber of the hub and communicating with the interior of the flow conduit through said one or more total pressure ports;
and an end portion,
wherein each of said one or more static pressure ports is located in the downstream direction relative to a respective one of the sensor tubes.

5 more elements

Dependencies are inferred from the claim text.