Piston rod sealing arrangement for a stirling engine

Details Piston rod sealing arrangement for a stirling engine Piston rod sealing arrangement for a stirling engine

1977-01-17

1978-06-06

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 15, 277 28, 277 59, 277 72R, 277149, 60517, 92168, F02G 100, F16J 1540

Patent

active

040932397

ABSTRACT:
A sealing arrangement for the light working gases of a Stirling engine comprises, surrounding the piston rod below the cylinder chamber, a block seal portion and a liquid seal portion, the latter including an oil scraping middle unit, a liquid chamber, and a liquid seal portion. Any gases passing through the block seal portion are positively blocked by the liquid seal portion. Leakage gases are also drawn off from the block seal portion, compressed, and returned to the cylinder chamber through a time controlled valve during the low periods of the pressure cycle below the piston.

REFERENCES:
patent: 757297 (1904-04-01), Goosmann
patent: 791300 (1905-05-01), Smith
patent: 849115 (1907-04-01), France
patent: 895791 (1908-08-01), Rollins
patent: 2465633 (1949-03-01), Cartier
patent: 3271037 (1966-09-01), Hammond
patent: 3403915 (1968-10-01), Roberts
patent: 3568436 (1971-03-01), Heffner et al.
patent: 3832935 (1974-09-01), Syassen
patent: 3848877 (1974-11-01), Bengtsson et al.
patent: 3907307 (1975-09-01), Maurer et al.

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