公开(公告)号：US20120177515A1

公开(公告)日：2012-07-12

申请号：US13294106

申请日：2011-11-10

Applicant: HARALD SCHMID ,  TOBIAS MAIER ,  MARTIN MÜELLER ,  MATTHIAS WEISS

Inventor： HARALD SCHMID ,  TOBIAS MAIER ,  MARTIN MÜELLER ,  MATTHIAS WEISS

IPC: F04D25/06

CPC classification number: F04D25/064 ,  F04D29/662 ,  G01M1/32

Abstract: A mixed-flow fan features a housing (42); an impeller (43) journaled rotatably with respect to the housing, and equipped with fan blades (54); a generally cylindrical air conduit (50) defined between the fan housing and the impeller, the fan blades extending into the air conduit in order, during operation, to transport air; an external-rotor motor (75) having an internal stator (100) and an external rotor (74) which includes a tubular ferromagnetic yoke (63) partly embedded in material of the impeller. A cup-shaped yoke (72) fits into a central cavity (68) of the tubular yoke (63) and accommodates a permanent magnet arrangement (66) which interacts with the stator. The tubular yoke (63) and the cup-shaped yoke (72) together serve as a magnetic return path for the external-rotor motor. The structure minimizes damage during final assembly, and simplifies insertion of balancing weights.

Abstract translation: 混流风扇具有壳体（42）; 叶轮（43），其相对于所述壳体可旋转地轴颈，并配备有风扇叶片（54）; 限定在所述风扇壳体和所述叶轮之间的大致圆柱形的空气导管（50），所述风扇叶片在运行期间依次延伸到所述空气管道中以运输空气; 具有内部定子（100）和外部转子（74）的外部转子电动机（75），其包括部分地嵌入叶轮材料的管状铁磁轭（63）。 杯形轭（72）装配到管状轭（63）的中心腔（68）中并且容纳与定子相互作用的永磁体装置（66）。 管状轭（63）和杯形轭（72）一起用作外转子马达的磁返回路径。 该结构使最终组装期间的损坏最小化，并简化了平衡重物的插入。