Patent ID: 7316547
Filing Date: 2008-01-08
Classification: F04B,Y10S

Abstract:
1. A reciprocating compressor driven by a linear motor comprising a shell, within which are mounted: a reference assembly formed by a motor and a cylinder; a resonant assembly formed by a piston reciprocating inside the cylinder, and by an actuating means operatively coupling the piston to the motor; and two spring means mounted to the resonant assembly and to the reference assembly and which are elastically and axially deformed in the displacement direction of the piston, the reciprocating compressor further comprising: a mounting element coupling an end of one spring means to an end of the other spring means; and a coupling element which has an end mounted to the piston and an opposite end mounted to the mounting element, wherein: said mounting element carries the ends of the two spring means coupled thereto and is axially displaceable together with the piston and is displaceable freely and transversally to the displacement direction of the piston, said coupling element is constructed to transmit the axial forces between the piston and the mounting element and to minimize the application of radial forces to the piston, and the mounting element includes a first annular portion coupling an adjacent end of one of the two spring means, and a second portion coupling an adjacent end of the other spring means, said first and second portions being disposed at axially opposite sides of the resonant assembly, and being affixed to each other by rigid elements that are mounted, with a radial gap, through the actuating means.