Fan device with impeller having circular plate opening, sidewall opening and groove connecting the circular plate opening with the sidewall opening for efficiently cooling motor
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United States of America Patent
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Sep 22, 2020
Grant Date -
Oct 6, 2016
app pub date -
Mar 29, 2016
filing date -
Mar 31, 2015
priority date (Note) -
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Abstract
An impeller includes: a cylinder that includes a circular plate-shaped circular plate and a peripheral wall that extends from an outer peripheral edge of the circular plate along a rotation shaft of the impeller; and a blade mounted to an outer peripheral surface of the peripheral wall, the blade being configured to send air. The circular plate has a circular plate opening at a center, the circular plate opening penetrating the circular plate along the rotation shaft, and a sidewall opening is formed at the peripheral wall, the sidewall opening penetrating the peripheral wall along a direction different from a direction parallel to the rotation shaft.
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