Abstract: The present invention relates to a shaping and welding device and process of connector pipes or dowels (1) primarily intended for use in compressors. More specifically the process presented here concerns the shaping and welding of copper pipes (1) used as connectors for suction, discharge and process, the metal housing (2) of hermetic compressors, with the goal of making this equipment much more practical, efficient and economical.

Abstract: The present invention relates to a shaping and welding device and process of connector pipes or dowels (1) primarily intended for use in 10 compressors. More specifically the process presented here concerns the shaping and welding of copper pipes (1) used as connectors for suction, discharge and process, the metal housing (2) of hermetic compressors, with the goal of making this equipment much more practical, efficient and economical.

Abstract: A suspension spring mounting arrangement applied to a refrigeration compressor comprising a shell (1) and a block (3) forming, with the stator (4) of an electric motor, a stationary assembly (2) mounted inside the shell (1) by an assembly of helical springs (10), each spring presenting a lower end (11) and an upper end (12), each end (11, 12) being coupled, respectively, to an adjacent part of the shell (1) and the stationary assembly (2), through a support (MS). The support (MS) comprises a base plate (20) incorporating at least two retention tongues (21) obtained from a portion of the base plate (20) which is bent to project outwardly from the plane of the latter, so that the retention tongues (21) are tightly fitted in the interior of one of the ends (11, 12) of an adjacent helical spring (10).

Abstract: The present invention relates to a connecting tube (2) for hermetic compressors, which is responsible for connecting the housing (1) of a hermetic compressor to the tube (3)—which may be the process valve tube or evaporation, condensation system—which comprises at least two portions composed of materials that are different from each other, which are associated by means of a suitable joining process—preferably welding, soldering or mechanical fastening. In the preferred embodiment of the invention, the connecting tube (2) comprises a first portion (5) comprising a first material and a second portion (6) composed of a second material, wherein the second portion (6) of the connecting tube (2) can join the first portion of the connecting tube (5) and the system tube (3).

Abstract: The suspension spring mounting arrangement is applied to a refrigeration compressor comprising a shell (1) and a block (3) forming, with the stator (4) of an electric motor, a stationary assembly (2) mounted inside the shell (1) by means of an assembly of helical springs (10), each spring presenting a lower end (11) and an upper end (12), each said end (11, 12) being coupled, respectively, to an adjacent part of shell (1) and stationary assembly (2), through a support means (MS). The support means (MS) comprises a base plate (20) incorporating at least two retention tongues (21) obtained from a portion of said base plate (20) which is bent to project outwardly from the plane of the latter, so that said retention tongues (21) are tightly fitted in the interior of one of the ends (11, 12) of an adjacent helical spring (10).

Abstract: A mounting arrangement for a hermetic compressor, comprising a shell (10) formed of a metallic plate and incorporating tubular projections (12) with the upper end (12a) opened to the inside of the shell (10) and with the lower end (12b) closed, fitted and tightly retained, by mechanical deformation of the parts, inside a drawn recess (22) of a respective basic plate (20) to be affixed under the shell (10).

Abstract: A connecting rod-piston mounting arrangement for a reciprocating compressor of small refrigeration systems, in which one of the parts defined by the piston (10) and the end (22) of the connecting rod (20) adjacent the said piston (10) carries a first spherical seat (11) and a spherical annular seat (12), the other of said parts incorporating a second spherical seat (23) turned to the first spherical seat (11) and a spherical annular surface (24) seated against the spherical annular seat (12), said first and second spherical seats (11,23) being seated onto respective opposite spherical surface portions (31,32) of a ball joint element (30) provided between the piston (10) and the connecting rod (20).

Abstract: A two-piece connecting rod for a reciprocating compressor and method for assembling a two-piece connecting rod, said connecting rod comprising an engaging portion (21), which is provided in one of the parts defined by a first connecting rod portion (10), to be mounted to the eccentric (6) of a crankshaft (4) of the compressor, and by a second connecting rod portion (20), to be articulated to a piston (8) reciprocating inside a cylinder (7), which is closed by a cylinder head (9); and a guide portion (11) provided in the other of said parts, to be slidingly coupled with the engaging portion (21); and a fixation means, applied to the coupling region between the engaging portion (21) and the guide portion (11), with the first connecting rod portion (10) being mounted to the eccentric (6) and with the second connecting rod portion (20) being mounted to the piston (8) lodged in the cylinder (7), in order to lock said portions against relative displacements in a position which results in a predetermined axial dista

Abstract: A mounting arrangement for a hermetic compressor, comprising a shell (10) formed of a metallic plate and incorporating tubular projections (12) with the upper end (12a) opened to the inside of the shell (10) and with the lower end (12b) closed, fitted and tightly retained, by mechanical deformation of the parts, inside a drawn recess (22) of a respective basic plate (20) to be affixed under the shell (10).

Abstract: A connecting rod-piston mounting arrangement for a reciprocating compressor of small refrigeration systems, in which one of the parts defined by the piston (10) and the end (22) of the connecting rod (20) adjacent the said piston (10) carries a first spherical seat (11) and a spherical annular seat (12), the other of said parts incorporating a second spherical seat (23) turned to the first spherical seat (11) and a spherical annular surface (24) seated against the spherical annular seat (12), said first and second spherical seats (11,23) being seated onto respective opposite spherical surface portions (31,32) of a ball joint element (30) provided between the piston (10) and the connecting rod (20).