公开(公告)号：US06283726B1

公开(公告)日：2001-09-04

申请号：US09518897

申请日：2000-03-06

申请人： Walter Fackelmann ,  Heinrich Hillrichs

发明人： Walter Fackelmann ,  Heinrich Hillrichs

IPC分类号： F04B3902

CPC分类号： F04D25/082 ,  F04D29/283

摘要： A radial blower, particularly for heating and air-conditioning systems for automobiles, has a spiral blower housing that is provided with an air intake (5) in a housing lateral wall and with an air outlet out of the spiral housing. A blower drive motor for a fan wheel is mounted to the housing with the fan wheel positioned in the spiral housing to face the air intake (5). The fan wheel has a fan ring with fan blades and a hub. The fan ring and the hub are connected to each other by a shell shaped vaulted or dished fan disk, which at least partly surrounds the drive motor. Fan disk openings (43) permit at least a portion of cooling air flowing through the drive motor to be discharged through the disk openings (43) into a blower air discharge chamber (23) in the spiral housing. The openings in the fan disk are formed to generate a negative pressure at these openings on a fan disk surface facing away from the drive motor whereby airflow through the motor is increased because the negative pressure draws more cooling air through the motor. The suction is further increased by streamlined hoods (61) covering part of the fan disk openings on the disk surface facing away from the motor. The increased airflow through the drive motor increases the service life of the blower and of the motor.

摘要翻译： 特别是用于汽车的加热和空调系统的径向鼓风机具有螺旋式鼓风机壳体，其在壳体侧壁中设置有进气口（5），并且具有从螺旋壳体出来的出气口。 用于风扇叶轮的鼓风机驱动马达安装到壳体上，其中风扇轮定位在螺旋壳体中以面对进气口（5）。 风扇风扇带风扇叶片和集线器的风扇环。 风扇环和轮毂通过外壳形拱形或碟形风扇盘相互连接，该盘至少部分地围绕驱动电动机。 风扇盘开口（43）允许流过驱动马达的至少一部分冷却空气通过盘形开口（43）排放到螺旋壳体中的鼓风机空气排放室（23）中。 风扇盘中的开口形成为在离开驱动电动机的风扇盘表面上的这些开口处产生负压，由此由于负压通过电动机吸入更多的冷却空气，因此通过电动机的气流增加。 通过流线型罩（61）进一步增加吸力，覆盖罩部分覆盖磁盘表面上远离马达的部分扇形盘开口。 通过驱动电机的增加的气流增加了鼓风机和电机的使用寿命。