Rolling piston type expansion machine

Details Rolling piston type expansion machine Rolling piston type expansion machine

F - Mech Eng,Light,Heat,Weapons

02

B

F02B 75/26 (2006.01) F01C 1/324 (2006.01) F02B 75/02 (2006.01)

Patent

CA 2161363

A rolling piston type expansion machine where an open-close valve mechanism is eliminated and where the timing for suction of high-pressure gas is smoothed up. The rolling piston type expansion machine includes: a cylinder (13) having a discharge port therein; a roller (23) which is freely eccentrically rotatably provided in the cylinder (13); a blade (29) which is freely movably supported by the cylinder (13) and whose tip is in contact with the circumferential surface of the roller (23) so as to form an expansion chamber (31); a gas passage (39) which is freely rotatably supported by a main bearing member (17) and a secondary bearing member (19), and which includes a main shaft (9) having a crank shaft portion (21) that causes eccentric rotation to the roller (23), and which includes a suction port (43) provided along a shaft center of the main shaft (9); and an inflow timing control portion (41) which controls inflow timing of the suction gas toward the expansion chamber (31) via the suction port (43) of the gas passage (39).

Machine à expansion du type à piston rotatif dans laquelle on élimine un mécanisme à valve ouvert-fermé et on assouplit le rythme d'aspiration de gaz haute pression. La machine à expansion du type à piston rotatif comprend: un cylindre (13) pourvu d'un orifice de décharge; un rouleau (23) qui peut tourner librement de façon eccentrique dans le cylindre (13); une lame (29) qui est librement supportée de façon mobile par le cylindre (13) et dont la pointe est en contact avec la surface circonférentielle du rouleau (23) de manière à former une chambre d'expansion (31); un passage de gaz (39) qui est librement supporté par un élément d'appui principal (17) et un élément d'appui secondaire (19) de manière à pouvoir y tourner, et qui comprend un arbre principal (9) ayant une partie vilebrequin (21) qui cause la rotation eccentrique au rouleau (23), et qui comprend un orifice d'aspiration (43) le long du centre de l'arbre principal (9); et une partie commande du rythme d'admission (41) qui commande le rythme d'admission du gaz d'aspiration dans la chambre d'expansion (31) via l'orifice d'aspiration (43) du passage de gaz (39).

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