公开(公告)号：US20140356170A1

公开(公告)日：2014-12-04

申请号：US13906306

申请日：2013-05-30

申请人： Bor-Haw Chang ,  Ping-Tsang Ho ,  Chung-Shu Wang ,  Jyun-Yang Chang

发明人： Bor-Haw Chang ,  Ping-Tsang Ho ,  Chung-Shu Wang ,  Jyun-Yang Chang

IPC分类号： F04D29/06

CPC分类号： F04D29/063 ,  F04D25/062 ,  F04D29/046 ,  F04D29/056 ,  F05D2240/50 ,  F05D2240/60

摘要： An oil return structure for fan includes a base, a bearing, a retaining ring and a rotor. The base has a bearing cup internally defining a receiving space for receiving the bearing therein. The bearing has a centered and axially extended shaft hole. The retaining ring is located at a front end of the bearing and has a central hole. The rotor includes a hub and a shaft. The shaft is extended through the central hole of the retaining ring into the shaft hole of the bearing, and is provided with an annular groove corresponding to the retaining ring. Oil in the bearing flowing to the annular groove during fan operation is centrifugally pulled out of the shaft and then caught by the retaining ring, from where the oil returns to the bearing. Therefore, loss of oil from the bearing is largely reduced to ensure extended fan service life.

摘要翻译： 用于风扇的回油结构包括基座，轴承，保持环和转子。 底座具有内部限定用于在其中接收轴承的容纳空间的轴承杯。 轴承具有中心轴向延伸的轴孔。 保持环位于轴承的前端，并具有中心孔。 转子包括轮毂和轴。 轴通过保持环的中心孔延伸到轴承的轴孔中，并且设置有与保持环相对应的环形槽。 在风扇运转期间流入环形槽的轴承中的油被离心地从轴上拉出，然后被固定环卡住，从油返回到轴承。 因此，大大减少轴承油的损失，以确保延长风机的使用寿命。