| 摘要 |
A protective air control system for an air turbine (73) motor having air bearings (72) ensures pressurized air is supplied to the air bearings (72) whenever the air turbine (73) is being driven. In one embodiment, a sensing device (81) monitors the air pressure supplied to the air bearings, and is operative to open a valve (78) for supplying air to the turbine (73) only when the bearing air pressure exceeds a predetermined amount. In another embodiment, a check valve (88) is mounted to divert a portion of the turbine air to the bearings (72) when the bearing air pressure is below the turbine air pressure. The protective system can be used with an electrostatic rotary atomizer coater (10). |
