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1. (WO1979000741) IMPROVING SEAL LIFE IN ROTARY MECHANISMS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000741 International Application No.: PCT/US1979/000027
Publication Date: 04.10.1979 International Filing Date: 18.01.1979
IPC:
F01C 9/00 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
C
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
9
Oscillating-piston machines or engines
Applicants:
Inventors:
Priority Data:
88623113.03.1978US
Title (EN) IMPROVING SEAL LIFE IN ROTARY MECHANISMS
(FR) JOINT DE LONGEVITE ACCRUE DANS DES MECANISMES ROTATIFS
Abstract:
(EN) A rotary mechanism having improved seal life including a housing (10) defining an operating chamber (12) having a wall configuration (50) based on a desired geometrical shape which is an n order harmonic curve where n is an integer of 1 or more, a shaft (14) journalled in the housing and having a eccentric within the chamber, and a rotor (26) within the chamber and journalled on the eccentric and having a working surface (42) based on the desired geometric shape and which is an n+1 order harmonic curve to define n+1 equally angularly spaced apexes (60) or noses on the surface. n+1 seals (64) are carried by the rotor, one at each apex or noses, and timing gearing (36, 38) interconnects the rotor and the housing to establish relative rates of rotation between the housing, the shaft and the rotor. The chamber wall is further defined by an n+1 harmonic curve superimposed on the n order harmonic curve which minimizes relative movement between the seal and the rotor to improve the life of the seals.
(FR) Un mecanisme rotatif a joint de longevite accrue comprend une enceinte (10) definissant une chambre (12) dont la configuration geometrique de la paroi (50) correspond a une sinusoide d"ordre n ou n est un nombre entier egal a 1 ou plus, un arbre (14) tourillonne dans l"enceinte et ayant un excentrique dans la chambre, et un rotor (26) dans la chambre, tourillonne sur l"excentrique et ayant une surface de travail (42) ayant la geometrie voulue et qui est une sinusoide d"ordre n + 1 de maniere a definir n + 1 apex (60) espaces angulairement de maniere identique sur la surface. n + 1 joints (64) sont portes par le rotor, un a chaque apex ou nez, et un engrenage de distribution (36, 38) effectue la connexion entre le rotor et la chambre de maniere a etablir des vitesses de rotation relatives entre l"enceinte, l"arbre et le rotor. La paroi de la chambre est definie par une sinusoide d"ordre n + 1 superposee a la sinusoide d"ordre n, ce qui reduit au minimum le mouvement relatif entre le joint et le rotor, augmentant ainsi la longevite des joints.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)