Crank gear for a reciprocating compressor

F - Mech Eng,Light,Heat,Weapons – 04 – B

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F04B 27/02 (2006.01) F02B 75/24 (2006.01) F04B 39/00 (2006.01)

Patent

CA 2549933

Crank gear (10) for a reciprocating compressor of the type equipped with at least one module which has two lines with two opposite cylinders. The crank gear is suitable for constraining the two cylinders to a crankshaft (20), so as to align the two cylinders, opposite each other with respect to an axis (21) of the shaft (20). The crank gear (10) is equipped with two rods (35), a series of connecting rods (30) and two cross heads (40) and (50). The series of identical connecting rods (30) is symmetrically positioned with respect to the alignment axis (25) of the two cylinders and furthermore the overall barycentre of the series of connecting rods lies on the axis (25) and on the axis (21) of the shaft (20) so that the whole of the shaft (20) is both statically and dynamically balanced.

La présente invention concerne un mécanisme à manivelle (10) pour un compresseur alternatif équipé d'au moins un module qui présente deux lignes avec deux cylindres opposés. Ce mécanisme à manivelle est conçu pour contraindre les deux cylindres sur un vilebrequin (20), de manière à aligner les deux cylindres opposés l'un à l'autre par rapport à un axe (21) du vilebrequin (20). Le mécanisme à manivelle (10) est équipé de deux tiges (35), d'une série de bielles (30) et de deux pieds de bielle (40) et (50). La série de bielles identiques (30) est placée de manière symétrique par rapport à l'axe d'alignement (25) des deux cylindres et le barycentre global de la série de bielles se trouve sur l'axe (25) et sur l'axe (21) du vilebrequin (20), de façon que l'ensemble du vilebrequin (20) est équilibré à la fois de manière statique et dynamique.

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