| 摘要 |
A fan (1) includes a housing (20), a vane assembly (40), and a sealing device (70). The housing includes a base portion (22), a bearing sleeve (24), a self-lubricating bearing (26) received in the bearing sleeve, and a lubricant insulation ring (28) received in the bearing sleeve. The vane assembly is rotatably attached in the housing, with a central rod (44) of the vane assembly extending through the bearing and the lubricant insulation ring. The sealing device is attached to the base portion such that the bearing is sealed in the bearing sleeve between the lubricant insulation ring and the sealing device. A sealing ring (80) of the sealing device is disposed in an annular groove (39) defined in the base portion, and is pressed tightly between the sealing lid and the base portion.
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