Search International and National Patent Collections
|1. (WO2018058892) CENTRIFUGAL FAN|
|Applicants:||QINGDAO HAIER JOINT STOCK CO., LTD
A centrifugal fan comprises a housing (20) having an air inlet provided on a cover portion (23) thereof and a plurality sets of air outlets provided on a peripheral wall portion (22) thereof; a wind wheel (30) configured to urge the air flow flowing into the housing (20) via the air inlet and out of the housing (20) via one or more of the plurality of the air outlets; a plurality groups of damper blocking plates (40), each of the damper blocking plates (40) being movably mounted to an air outlet and configured to be controllably moved to a different obstructing position to completely shield, partially shield, or fully expose the air outlet so as to adjust the air blowing area of the air outlet; a rotating member (50) rotatably mounted on the housing (20); and a transmission mechanism configured to transmit the rotational movement of the rotating member (50) to the plurality of damper blocking plates (40). In the centrifugal fan, the blocking plates (40) can be moved by rotating the rotating member (50) to controllably shield the plurality of air outlets so as to achieve blowing air in multiple directions at the same time and to achieve a reasonable air supply by choosing air blowing directions and adjusting air volume of each outlet.