Positive displacement pump or motor

Details Positive displacement pump or motor Positive displacement pump or motor

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 19/02 (2006.01) F01B 15/02 (2006.01) F04B 7/04 (2006.01)

Patent

CA 2175369

A central impeller (77) is sandwiched between fixed walls (19, 23) and is driven through a circular path of small radius, but prevented from rotating by a ring-shaped shutter or slider (59) which surrounds and guides it. The shape of the impeller (77) and slider (5 are such that displacement chambers (87, 89, 91, 93) are formed between them, which expand and contract as the impeller (77) follows circular path and imparts a reciprocating motion to the slider (59). The two fixed walls (19, 23) may contain suction and discharge p (29, 31) respectively, which are covered and uncovered by the impeller (77) and slider (59) as they perform their motions.

Un rotor central (77) est pris entre deux parois fixes (19, 23) et il est entraîné sur une trajectoire circulaire de petit rayon, mais une navette ou pièce coulissante (59) l'entoure et le guide afin de l'empêcher de tourner. La forme de ce rotor (77) ainsi que celle de la pièce coulissante (59) sont telles qu'elles délimitent entre elles des chambres de déplacement (87, 89, 91, 93) qui s'agrandissent et se referment tandis que le rotor (77) suit sa trajectoire circulaire et communique un mouvement alternatif à la pièce coulissante (59). Les deux parois fixes (19, 23) peuvent contenir respectivement des orifices d'aspiration ou d'écoulement (29, 31) qui sont couverts et découverts par le rotor (77) et la pièce coulissante (59) pendant le déplacement de ceux-ci.

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