Patent ID: 8272848
Filing Date: 2012-09-25
Classification: F04B

Abstract:
1. A positive-displacement reciprocating compressor, comprising: a plunger adapted to slidingly couple inside a cylinder, to form a compression chamber within the cylinder, an upper bracket and a lower bracket supporting the plunger, a piston pin, connected between and spacing the upper bracket and the lower bracket, a driving element, operatively coupled to the plunger so as to be able to put the plunger in motion in said cylinder, wherein said driving element includes a motor having a rotation shaft coupled with an eccentric element mechanically connected to said plunger and able to impose longitudinal displacements to said plunger according to an orthogonal direction with respect to the rotation axis of said shaft, said eccentric element having a substantially longitudinally developed rotating body, having a tubular portion coupling to said shaft, on one side, and an eccentric pin, on the other side, and a connecting plate disposed between the lower bracket and the upper bracket, wherein said connecting plate includes a first hole through which the eccentric pin passes, and a second hole in which the piston pin is received; wherein each said upper and lower bracket is a rigid element supporting the plunger at one side of the plunger and having a through opening that accommodates the eccentric pin, the upper and lower brackets being mutually spaced in substantial parallel relation by the piston pin.