HVAC air inlet with blend mode and fresh-restricted mode
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United States of America Patent
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Apr 3, 2018
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N/A
app pub date -
Aug 5, 2010
filing date -
Aug 5, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An air inlet system for an automotive HVAC system has a housing comprising a first cylindrical segment enclosing an interior space and having a first radial surface with a first angular divergence. The first radial surface has a fresh air aperture and a recirculation aperture for radially receiving fresh air and recirculated air, respectively. The housing further comprises an outlet body with an exit aperture. A pivoting door element is mounted in the interior space and shaped as a second cylindrical segment with a second radial surface with a second angular divergence which is less than the first angular divergence. The door element has a pivot axis that allows the second radial surface to slide along the first radial surface. The door element pivots to selectably align the opening with the fresh air aperture or the recirculation aperture in order to 1) block the fresh air aperture without blocking the recirculation aperture, 2) simultaneously block portions of the fresh air aperture and the recirculation aperture, 3) block the recirculation aperture without blocking any of the fresh air aperture, or 4) block the recirculation aperture while blocking only a portion of the fresh air aperture.
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