Sensor assembly with hydrophobic filter
First Claim
1. A sensor assembly, comprising:
- a housing including an inlet flow port and an outlet flow port, the housing defining a fluid channel extending between the inlet flow port and the outlet flow port;
a flow sensor positioned in the housing and exposed to the fluid channel, the flow sensor configured to sense a measure related to a flow rate of a fluid flowing through the fluid channel;
an upstream filter situated in the fluid channel of the housing upstream of the flow sensor, wherein the upstream filter includes a woven mesh; and
wherein during operation of the sensor assembly, a fluid passes through the inlet flow port, through the upstream filter, past the flow sensor, and through the outlet flow port, the upstream filter configured to reduce ingress of unwanted contaminates into the fluid channel and to the flow sensor.
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Abstract
The present disclosure relates to methods and devices for reducing moisture, dust, particulate matter, and/or other contaminates entering a sensor. A sensor assembly may include a housing with an inlet flow port and an outlet flow port. The housing may define a fluid channel extending between the inlet flow port and the outlet flow port, with a sensor positioned in the housing and exposed to the fluid channel. The sensor may be configured to sense a measure related to the flow rate of a fluid flowing through the fluid channel. A hydrophobic filter may be situated in the fluid channel, sometimes upstream of the sensor. When so configured, and during operation of the sensor assembly, a fluid may pass through the inlet flow port, through the hydrophobic filter, across the sensor, and through the outlet flow port.
216 Citations
20 Claims
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1. A sensor assembly, comprising:
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a housing including an inlet flow port and an outlet flow port, the housing defining a fluid channel extending between the inlet flow port and the outlet flow port; a flow sensor positioned in the housing and exposed to the fluid channel, the flow sensor configured to sense a measure related to a flow rate of a fluid flowing through the fluid channel; an upstream filter situated in the fluid channel of the housing upstream of the flow sensor, wherein the upstream filter includes a woven mesh; and wherein during operation of the sensor assembly, a fluid passes through the inlet flow port, through the upstream filter, past the flow sensor, and through the outlet flow port, the upstream filter configured to reduce ingress of unwanted contaminates into the fluid channel and to the flow sensor. - View Dependent Claims (2, 3, 4, 5)
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6. A sensor assembly, comprising:
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a housing including an inlet flow port and an outlet flow port, the housing defining a fluid channel extending between the inlet flow port and the outlet flow port; a sensor situated in the housing and exposed to the fluid channel, the sensor configured to sense a measure related to a property of a fluid flowing through the fluid channel; a filter situated in the fluid channel of the housing upstream of the sensor, wherein the filter includes a woven mesh; and wherein during operation of the sensor assembly, a fluid passes through the inlet flow port, through the filter, past the sensor, and through the outlet flow port. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A sensor assembly, comprising:
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a housing including a first port and a second port; a sensor situated in the housing, the sensor in fluid communication with the first port and the second port, the sensor is configured to sense a measure related to a property of a fluid; and a filter situated in the housing fluidly between the sensor and the first port. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification