US 11,598,745 B2 · Electrochemical gas sensor assembly

Abstract

Various example embodiments described herein relate to an electrochemical gas sensor. The electrochemical gas sensor can include a sensor cap having one or more solid features disposed on a surface of the sensor cap. The electrochemical gas sensor can include a counter electrode configured to generate a gas during use of the electrochemical gas sensor. The electrochemical gas sensor can include a vent assembly adapted to release at least a portion of the gas generated at the counter electrode out from the electrochemical gas sensor. The vent assembly can include a vent conduit and a vent membrane that defines a passage for the gas to flow from an extended portion of the counter electrode, to the vent conduit, via the vent membrane, so as to be vented from the electrochemical gas sensor.

Claims18

Dependent claims

An electrochemical gas sensor comprising:

a sensor cap comprising a plurality of solid features defined on a surface of the sensor cap;
a counter electrode configured to generate a gas during use of the electrochemical gas sensor;
and
a vent assembly adapted to release at least a portion of the gas generated at the counter electrode out of the electrochemical gas sensor,
wherein the vent assembly comprises a vent conduit and a vent membrane, wherein the plurality of solid features on the sensor cap define a cavity between an internal surface of the plurality of solid features and the vent membrane, wherein the cavity is operable to accumulate at least a portion of the gas released out through the vent membrane before the at least a portion of the gas eventually vents out through the vent conduit.

2 more elements

An electrochemical oxygen sensor comprising:

a sensor cap comprising a plurality of pillar shaped moldings on a top surface of the sensor cap;
a sensing electrode operable to sense oxygen;
a counter electrode operable to generate oxygen;
an electrolyte;
and
a venting system comprising:
a vent membrane dimensioned and configured to have a porosity,
a vent conduit defined by an aperture in the sensor cap, the aperture in the sensor cap dimensioned and configured such that gas can vent from the electrochemical oxygen sensor while water is prevented from entering the electrochemical oxygen sensor at least partially through capillary forces, and
an extended portion of the counter electrode, wherein the extended portion of the counter electrode extends out from one end through a periphery of a substrate of the counter electrode,
wherein the venting system is operable to provide a passage to the oxygen generated at the counter electrode via the extended portion of the counter electrode to the vent membrane, and further via the vent conduit through the top surface of the sensor cap.

7 more elements

Dependencies are inferred from the claim text.

Electrochemical gas sensor assembly

Life of this patent

Electrochemical gas sensor assembly

Life of this patent

Abstract

Claims18