초록 ▼

An emergency oil/mist system is embodied in the main lubrication system for a bearing or gear box assembly of a gas turbine engine, and includes an auxiliary reservoir interconnected between the main source of pressurized lubricant and an air aspirating nozzle which is capable of either providing a

An emergency oil/mist system is embodied in the main lubrication system for a bearing or gear box assembly of a gas turbine engine, and includes an auxiliary reservoir interconnected between the main source of pressurized lubricant and an air aspirating nozzle which is capable of either providing a stream of oil to the bearing, or a mist of lubricant to the bearing. A source of pressurized air is connected to the air aspirating nozzle through a control piston valve, and the latter also is provided in a vent line extending between the auxiliary reservoir and the atmosphere. During normal operation of the main lubrication system, the source of pressurized oil is connected through the auxiliary reservoir to the nozzle for providing a stream of lubricant to the bearing. Upon failure of the source of pressurized lubricant, the control piston valve is actuated so as to connect the auxiliary or emergency lubricant reservoir to the atmosphere by the vent conduit, and simultaneously connect the source of pressurized air to the air aspirating nozzle. The pressurized air passing through the nozzle aspirates or draws oil from the emergency reservoir to provide a spray or mist of lubricant to the bearing. The vent assures that the oil in the auxiliary reservoir is withdrawn at a controlled rate, thereby providing a spray of lubricant to the bearing for a limited period of time to enable the engine to maintain its operation. The emergency system produces an ultrasonic impingement of the oil as it leaves the air aspirating nozzle so as to create extremely small droplets of uniform distribution of oil on the bearing.

대표청구항 ▼

An emergency lubricant/mist system for providing a pressurized spray of lubricant to a lubricated part for a limited period of time after failure of a main lubrication system comprising: a source of pressurized lubricant; air aspirating nozzle means directed to provide either a stream of lubricant o

An emergency lubricant/mist system for providing a pressurized spray of lubricant to a lubricated part for a limited period of time after failure of a main lubrication system comprising: a source of pressurized lubricant; air aspirating nozzle means directed to provide either a stream of lubricant or a spray of lubricant to the lubricated part; conduit means interconnecting said source of pressurized lubricant to said nozzle means; an emergency lubricant reservoir provided in said conduit means intermediate said source of pressurized lubricant and said nozzle means; atmospheric vent means; a source of pressurized air; control means interconnecting: (1) said atmospheric vent means with said emergency lubricant reservoir; and (2) said source of pressurized air with said air aspirating nozzle means; said control means being operatively connected to said source of pressurized lubricant whereby when the main lubrication system is operational, said control means is operative to inhibit the flow of pressurized air from said source of pressurized air to said air aspirating nozzle means and to inhibit said emergency lubricant reservoir from being vented to the atmosphere, whereas upon failure of the main lubrication system, said control means is effective to vent the emergency lubricant reservoir and simultaneously allow pressurized air to be provided to the air aspiration nozzle means from the source of pressurized air, such that the pressurized air passing through the nozzle means is effective to aspirate lubricant from the emergency lubricant reservoir to create a pressurized spray of lubricant to said lubricated part.