Air duct airflow sensor
AssigneeJohnson Controls GmbH
InventorJean H. Scholten
Life of this patent
Estimating the term…
Abstract
An airflow sensor assembly for an air duct is provided. The airflow sensor assembly includes an air duct having an interior wall and an exterior wall, a high pressure detection device, and a low pressure detection device. The low pressure detection device includes a hollow ring disposed within the interior wall of the air duct. The hollow ring includes an inner periphery portion, an outer periphery portion, and a first set of apertures defined therein. The first set of apertures is spaced around the inner periphery portion of the hollow ring. The airflow sensor assembly further includes a pressure sensor fluidly coupled to the high pressure detection device and the low pressure detection device.
Claims20
An airflow sensor assembly for an air duct, the air duct having an interior wall and an exterior wall;
- comprising:
- a high pressure detection device;
- a low pressure detection device, comprising:
- a hollow ring configured to be disposed within the interior wall of the air duct, the hollow ring having an inner periphery portion and an outer periphery portion;
- and
- a first plurality of apertures defined therein and spaced around the inner periphery portion of the hollow ring;
- and
- a pressure sensor configured to be fluidly coupled to the high pressure detection device and the low pressure detection device.
An airflow sensor assembly for an air duct, the air duct having an interior wall and an exterior wall;
- comprising:
- a high pressure detection device;
- a low pressure detection device, comprising:
- an airflow restrictor;
- and
- a first plurality of apertures defined therein and spaced around a periphery of the air duct;
- a first gasket having a recessed area defined therein and a first connecting opening, the first gasket being fitted over the exterior wall and proximate the first plurality of apertures and the airflow restrictor;
- and
- a first tube fluidly coupled to the first connecting opening;
- and
- a pressure sensor configured to be fluidly coupled to the high pressure detection device and the low pressure detection device.
A method of sensing airflow in an air duct, the method comprising:
- receiving a high air pressure measurement from a high pressure detection device;
- receiving a low air pressure measurement from a low pressure detection device, the low pressure detection device comprising:
- a hollow ring disposed within an interior wall of the air duct, the hollow ring having an inner periphery portion and an outer periphery portion;
- and
- a first plurality of apertures defined therein and spaced around the inner periphery portion of the hollow ring;
- a first connecting opening disposed within the outer periphery portion of the hollow ring;
- and
- a first tube fluidly coupled to the first connecting opening;
- and
- calculating an air velocity through the air duct based on the high air pressure measurement and the low air pressure measurement.
Dependencies are inferred from the claim text.