Patent ID: 8360749
Filing Date: 2013-01-29
Classification: F04B,Y10T

Abstract:
1. An arrangement for mounting a resonant spring in a refrigeration compressor of a type which comprises, in an interior of a shell ( 1 ): a cylinder block ( 2 ) defining a cylinder ( 2 a ); a movable assembly formed by a piston ( 5 ) reciprocating in an interior of the cylinder ( 2 a ), an actuating means ( 7 ), for driving the piston ( 5 ), and a driving rod ( 9 ) coupling the piston ( 5 ) to the actuating means ( 7 ); and a resonant spring ( 11 ) having a first end portion ( 11 a ) affixed to the cylinder block ( 2 ) by a first fixation means ( 20 ), and a second end portion ( 11 b ) affixed to the movable assembly by a second fixation means ( 30 ), wherein at least one of the first and second fixation means ( 20 , 30 ) comprises a bearing portion ( 21 , 31 ) which is attached, at a first side ( 21 a , 31 a ), around one of the end portions ( 11 a , 11 b ) of the resonant spring ( 11 ) and having, at an opposite side, a fixation face ( 21 b , 31 b ), and a bearing receiving portion ( 22 , 32 ) which is attached, at one side, to one of the cylinder block and the movable assembly and having, at an opposite side, a junction face ( 22 b , 32 b ), said fixation and junction faces ( 21 a , 31 a , 22 b , 32 b ) of the bearing portion ( 21 , 31 ) and bearing receiving portion ( 22 , 32 ) of said fixation means ( 20 , 30 ) being seated and welded to each other, in order to secure a respective end portion ( 11 a , 11 b ) of the resonant spring ( 11 ) to the one of the movable assembly and the cylinder block ( 2 ), maintaining said movable assembly concentric to the cylinder ( 2 a ) and in a predetermined axial positioning.