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US 2023/0324075 A1Published application
Fresh air inlet with vortex debris collection
AssigneeBroan-NuTone LLC
InventorsRyan Revers, Richard R. Sinur, Bradley Mergener, Brent Lillesand
Life of this patent
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Abstract
A air inlet for an air handling unit includes an intake grate that extends around a central axis and is configured to admit an airflow therethrough. The air inlet further includes an outlet duct arranged to lie along the central axis and positioned radially inward of the intake grate. The air inlet further includes a debris collection housing.
Claims20
An air inlet for an air handling unit, the air inlet comprising
- an intake grate that is configured to admit an airflow therethrough,
- an outlet duct arranged to lie inward of the intake grate, and
- a debris collection housing configured to collect particles entrained in the airflow and retain the particles in a debris collection space defined, at least partially, by the debris collection housing and located upstream of the outlet duct as the airflow continues downstream through the outlet duct without the particles.
An air inlet for an air handling unit, the air inlet comprising
- an intake grate that is configured to admit an airflow therethrough,
- an outlet duct arranged to, at least partially, lie downstream of the intake grate, and
- a debris collection housing configured to provide a debris collection space having a first, relatively, high pressure area directly downstream of the intake grate and a second, relatively-low pressure area, lower than the first relatively-high pressure area, directly upstream of a distal end of the outlet duct to collect particles entrained in the airflow and retain the particles in the second, relatively-low pressure area upstream of the outlet duct as the airflow continues downstream through the outlet duct without the particles.
A method of removing particles from an airflow, the method comprising
- providing an air inlet that covers an opening into a building;
- drawing air through the air inlet and the opening;
- the air inlet including an intake grate that is configured to admit the airflow therethrough, an outlet duct arranged to, at least partially, lie inward of the intake grate, and a debris collection housing configured to provide a debris collection space, and
- capturing and retaining the particles in the debris collection space prior to the air reaching the outlet duct,
- wherein the airflow travels, first, through the intake grate at a location spaced a first distance from the opening in the building, then the airflow makes a 90 degree turn and travels away from the opening in the building toward a distal end of the outlet duct, and then the airflow makes a 180 degree turn and enters into the outlet duct at the distal end of the outlet duct.
2 more elements
Dependencies are inferred from the claim text.