| 摘要 |
An air turbine starter includes a starter housing and a check valve. The check valve is disposed within the starter housing and is configured, in response to a pressure differential across the check valve, to selectively allow and prevent lubricant to flow therefrom. The check valve includes a valve includes a valve body, a valve seat, a valve bore, a valve element, and a plurality of rounded grooves. The valve bore is formed in the valve body between the valve seat and the lubricant outlet port. The valve element is disposed within the valve bore and is movable between a plurality of open positions and a closed position. The rounded grooves are formed in the valve body, and are disposed adjacent to, and in fluid communication with, the valve bore to improve lubricant to flow past the valve element when the valve element is in an open position. |
| 主权项 |
1. An air turbine starter, comprising:
a starter housing including a lubricant supply opening and a lubricant discharge opening, the lubricant supply opening adapted to receive lubricant from a lubricant source, the lubricant discharge opening configured to supply lubricant from the starter housing to the lubricant source; and a check valve disposed within the starter housing proximate the lubricant discharge opening, the check valve configured, in response to a pressure differential across the check valve, to selectively allow and prevent lubricant to flow from the starter housing and through the discharge opening, the check valve comprising:
a valve body including a lubricant inlet port and a lubricant outlet port, the lubricant inlet port adapted to receive a flow of lubricant, the lubricant outlet port in fluid communication with the lubricant discharge opening,a valve seat formed in the valve body and disposed between the lubricant inlet port and the lubricant outlet port, the valve seat having an opening formed therein,a valve bore formed in the valve body between the valve seat and the lubricant outlet port,a valve element disposed within the valve bore and movable between a plurality of open positions, in which lubricant may flow between the lubricant inlet port and the lubricant outlet port, and a closed position, in which lubricant may not flow between the lubricant inlet port and the lubricant outlet port, anda plurality of rounded grooves formed in the valve body, the rounded grooves disposed adjacent to, and in fluid communication with, the valve bore to improve lubricant to flow past the valve element when the valve element is in an open position. |
