Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Non-working fluid passage in inner working or reacting member
Patent
1978-11-07
1981-06-30
Swisher, S. Clement
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
Non-working fluid passage in inner working or reacting member
308 77, F01C 2106
Patent
active
042760062
ABSTRACT:
A system for cooling the bearings supporting the shaft of a rotor in a pneumatic motor powered with hot pressurized fluid. The rotor responds to the flow of hot fluid under pressure by moving to develop output power. The rotors which conduct heat from the hot fluid through the shaft and into the bearings have a series of peripheral axial slots adjacent the ends of the shaft. Fasteners engage the shaft to position the bearings over the series of axial slots. A manifold connects the slots to a discharge conduit. Some of the hot pressurized fluid is diverted through a nozzle in the discharge conduit to create a pressure differential between the manifold and the surrounding environment. This pressure differential draws air from the surrounding environment through the slots and into the manifold. The air on flowing through the slots absorbs heat from the shaft and the inside of the bearings to thereafter maintain the temperature of the bearing below the hot fluid.
REFERENCES:
patent: 1041606 (1912-10-01), Dembowsky
patent: 1800927 (1931-04-01), Britain
patent: 2439127 (1948-04-01), Dailey et al.
patent: 2789021 (1957-04-01), Pederson
patent: 2799253 (1957-07-01), Lindhagen
Eastman James M.
Perkey Russell C.
Thoman David C.
Decker Ken C.
McCormick Jr. Leo H.
Swisher S. Clement
The Bendix Corporation
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