Abstract: The present invention refers to a linear compressor based on resonant oscillating mechanism, which is comprised by at least one resonant spring (2) at least one linear motor (3) composed of at least one fixed portion (31 ) and at least one movable portion (32), at least one piston (4) operatively associated with at least one rod (5) and at least one cylinder (6), all these elements being disposed within a housing (7), and the movable portion (32) of the linear motor (3) is physically associated with one end of the resonance spring (2) through a first coupling assembly and the rod (5) is physically associated with the opposite end of the resonance spring (2) through a second coupling assembly. The linear motor (3), the cylinder (6) and the piston (4) are physically arranged within a same end of the housing (7). The rod (5) is disposed within the resonant spring (2). The piston-cylinder assembly (4, 6) is capable of acting at the distal end to the coupling end between the rod (5) to the resonant spring (2).

Abstract: The compressor of the invention includes a block (B) defining a shaft hub having a first and a second end portion and housing an eccentric shaft having a median portion radially journalled in the shaft hub, and a free end portion carrying the rotor of an electric motor. The first and the second end portions of the shaft hub define radial bearings for the shaft and a support member is formed by a coupling portion, affixed to the free end portion of the shaft, and by a mounting portion, projecting axially and radially from the coupling portion, externally to the shaft hub and around the median portion of the shaft. The rotor is affixed to the mounting portion, concentrically to the eccentric shaft and surrounding the shaft hub.

Abstract: The block (B) comprises a piston hub having a horizontal axis (X) and housing a piston and a shaft hub housing a crankshaft and having a vertical axis (Y) intersecting the horizontal axis (X). The block (B) incorporates a connecting portion having a first end attached to a region of the piston hub disposed on a side of the horizontal axis (X) opposite to that turned to the shaft hub, and a second end attached to an adjacent end portion of the shaft hub. The connecting portion is elastically deformable by a resulting bending moment (MF) generated: by a first compression derived force (F1) actuating on the second end of the connecting portion; and by a second compression derived force (F2) applied to a free end portion of the shaft hub and which tends to provoke an angular displacement of the vertical axis (Y) of the shaft hub in the direction of the first compression derived force (F1).

Abstract: The present invention refers to a process for mounting permanent magnets in electric motor rotors and is destined, more specifically, to hermetic motor-compressor, which was conceived and developed to provide greater reliability to the assembly, since it is a technical solution capable of absorbing, more appropriately, the dimensional variations of the components involved and allows the use of high speed motor. Said process comprises the following steps: to construct a helical elastic element (6) with a diameter smaller than the outer diameter of the magnet (3) assembly positioned on the outer surface of the metal core (2); to elastically expand the helical elastic element (6); and to engage the helical elastic element (6) around the magnet (3) assembly to enable that the elastic force of the a helical elastic element (6) causes the latter be rigidly molded to the outer diameter of the magnet assembly (3).

Abstract: The present invention refers to a linear compressor based on resonant oscillating mechanism, which is comprised by at least one resonant spring (2) at least one linear motor (3) composed of at least one fixed portion (31 ) and at least one movable portion (32), at least one piston (4) operatively associated with at least one rod (5) and at least one cylinder (6), all these elements being disposed within a housing (7), and the movable portion (32) of the linear motor (3) is physically associated with one end of the resonance spring (2) through a first coupling assembly and the rod (5) is physically associated with the opposite end of the resonance spring (2) through a second coupling assembly. The linear motor (3), the cylinder (6) and the piston (4) are physically arranged within a same end of the housing (7). The rod (5) is disposed within the resonant spring (2). The piston-cylinder assembly (4, 6) is capable of acting at the distal end to the coupling end between the rod (5) to the resonant spring (2).

Abstract: The present invention relates to compressor leaf springs, in particular, linear compressor leaf springs; the leaf springs comprising at least one spacer (3) disposed between at least a pair of flat springs (2), each flat spring (2) being comprised by at least one outer ring (21), at least one inner ring (22) and at least one connection extension (23) which connects an outer rim (21) to an inner ring (22); According to the present invention, it is defined at least one section of physical contact between at least a pair of outer rims (21) defined by at least one spacer (3), at least one section of physical contact between at least a pair of inner rims (22) defined by at least one spacer (3), and at least one free section of physical contact between at least two connection extensions (23) adjacently arranged.

Abstract: A piston of the type comprising a tubular skirt portion which is closed, next to an end edge, by a head portion, the skirt portion being defined by a respective tube extension and presenting an end edge region configured to affix a head portion formed in a separate piece and having a peripheral contour internal to an axial projection of the outer contour of the skirt portion.

Abstract: A system for actuation in an admission valve of a gas compressor including an admission valve being configured to allow the input of gas inside the cylinder upon the axial movement of the piston in a first axial direction; and a discharge valve configured to allow the output of gas from inside the cylinder upon the axial movement of the piston in a second axial direction opposite to the first axial direction. The system includes at least one actuator element, operatively associated with the admission valve, capable of keeping the admission valve open when the electric motor stops and starts-up. The actuator element is also capable of allowing opening and closing of the admission valve upon the regime of work of the electric motor. The present development also refers to refrigeration equipment which includes the above-mentioned gas compressor.

Abstract: The compressor of the invention includes a block (B) defining a shaft hub having a first and a second end portion and housing an eccentric shaft having a median portion radially journalled in the shaft hub, and a free end portion carrying the rotor of an electric motor. The first and the second end portions of the shaft hub define radial bearings for the shaft and a support member is formed by a coupling portion, affixed to the free end portion of the shaft, and by a mounting portion, projecting axially and radially from the coupling portion, externally to the shaft hub and around the median portion of the shaft. The rotor is affixed to the mounting portion, concentrically to the eccentric shaft and surrounding the shaft hub.

Abstract: The block (B) comprises a piston hub having a horizontal axis (X) and housing a piston and a shaft hub housing a crankshaft and having a vertical axis (Y) intersecting the horizontal axis (X). The block (B) incorporates a connecting portion having a first end attached to a region of the piston hub disposed on a side of the horizontal axis (X) opposite to that turned to the shaft hub, and a second end attached to an adjacent end portion of the shaft hub. The connecting portion is elastically deformable by a resulting bending moment (MF) generated: by a first compression derived force (F1) actuating on the second end of the connecting portion; and by a second compression derived force (F2) applied to a free end portion of the shaft hub and which tends to provoke an angular displacement of the vertical axis (Y) of the shaft hub in the direction of the first compression derived force (F1).

Abstract: The present invention refers to a system for actuation in an ad mission valve (5) of a gas compressor (1) comprising at least: one set formed by a cylinder (2) and a piston (3); one electric motor (4), operatively associated with said set, capable of providing an axial movement of the piston (3) to compress the gas inside the cylinder (2), the admission valve (5) being configured to allow the input of gas inside the cylinder (2) upon the axial movement of the piston (3) in a first axial direction; and a discharge valve (6) configured to allow the output of gas from inside the cylinder (2) upon the axial movement of the piston (3) in a second axial direction opposite to the first axial direction. The system comprises at least one actuator element (7), operatively associated with the admission valve (5), capable of keeping the admission valve (5) open when the electric motor (4) stops and starts-up.

Abstract: A piston of the type comprising a tubular skirt portion which is closed, next to an end edge, by a head portion, the skirt portion being defined by a respective tube extension and presenting an end edge region configured to affix a head portion formed in a separate piece and having a peripheral contour internal to an axial projection of the outer contour of the skirt portion.

Abstract: A system for closing a suction muffler of a hermetic compressor, the suction muffler including: a hollow base; a cover to be coupled to the hollow base, the parts defined by the hollow base and the cover including respective mutually seatable peripheral flanges, which are shaped to define, jointly, an internal channel extended along at least part of the circumferential extension of the peripheral flanges and which is opened to the opposite external faces of the latter by means of throughbores axially aligned to each other in pairs, each pair of throughbores maintaining a circumferential distance in relation to an adjacent pair of throughbores, the throughbores of each pair and the internal channel being filled with a gasket of injected material, which projects outwardly from the throughbores so as to define an axial lock portion.

Abstract: The present invention provides a piston lubrication system for a reciprocating compressor with a linear motor. The piston lubrication system includes an oil sump defined within a hermetic shell, and a cylinder affixed within the hermetic shell. A radial gap is defined by a piston located within the cylinder. A pump supplies oil from the oil sump to the radial gap via the oil supply duct and oil return duct.

Abstract: A process for forming the stator of a linear electric motor, an annular stack of lamination elements, and a stator for an electric motor, said stator comprising an annular stack of laminations elements (5) within which is mounted a tubular coil (6), said process comprising the steps of: a-providing lamination elements (10), each being defined by two lamination portions (13, 14) to be affixed to each other to complete the respective lamination element (10); b-forming two mutually complementary annular assemblies (20, 30), with the lamination portions (13, 14) of each annular assembly (20, 30) being seated side by side in relation to each other; and c-seating in the interior of each of said annular assemblies (20, 30) a respective adjacent end portion of the tubular coil (6), affixing the two annular assemblies (20, 30) to each other, to complete the shape of the annular stack of lamination elements (5).

Abstract: A system for closing a suction muffler of a hermetic compressor, the suction muffler including: a hollow base; a cover to be coupled to the hollow base, the parts defined by the hollow base and the cover including respective mutually seatable peripheral flanges, which are shaped to define, jointly, an internal channel extended along at least part of the circumferential extension of the peripheral flanges and which is opened to the opposite external faces of the latter by means of throughbores axially aligned to each other in pairs, each pair of throughbores maintaining a circumferential distance in relation to an adjacent pair of throughbores, the throughbores of each pair and the internal channel being filled with a gasket of injected material, which projects outwardly from the throughbores so as to define an axial lock portion

Abstract: An oil pumping system for a reciprocating hermetic compressor having a shell, which defines in the interior thereof an oil sump; a motor compressor assembly; and an oil pump means. The oil pump means is coupled to the compressor by at least one dampening resilient means. The dampening resilient means is dimension to reduce the amplitude of displacement of the oil pump means to a value that is calculated so that the ratio between the natural frequency of resonance (Wn) of the oil pump means and an operation frequency (W) of the compressor results in a ratio between the displacements of the oil pump means and of the compressor with a value inferior to one.

Abstract: A linear electric motor, capable of producing reciprocation of a piston within a cylinder to compress refrigerant gas. The coil of the linear electric motor is mounted to the internal wall of a block that forms the cylinder of the compressor, and a support for the magnets is mounted to an outwardly extending base flange of the piston. The support is formed by a base plate mounted to the base flange with a plurality of “L” shaped finger plates spaced around and affixed to the base plate, with the edges of the long legs of the finger plates extending radially of the piston's central axis. Arcuated shaped permanent magnet are fitted between the opposite flat sides of each pair of the long legs of the finger plates to form a stable and rigid toroidal shaped magnet assembly positioned between the external wall of the cylinder and the coil.

Abstract: A process for forming the stator of a linear electric motor, an annular stack of lamination elements, and a stator for an electric motor, said stator comprising an annular stack of laminations elements (5) within which is mounted a tubular coil (6), said process comprising the steps of: a—providing lamination elements (10), each being defined by two lamination portions (13, 14) to be affixed to each other to complete the respective lamination element (10); b—forming two mutually complementary annular assemblies (20, 30), with the lamination portions (13, 14) of each annular assembly (20, 30) being seated side by side in relation to each other; and c—seating in the interior of each of said annular assemblies (20, 30) a respective adjacent end portion of the tubular coil (6), affixing the two annular assemblies (20, 30) to each other, to complete the shape of the annular stack of lamination elements (5).

Abstract: A refrigeration system with a plate-type condenser and a method for compacting it, to be applied to a refrigeration appliance presenting a compressor mounted in a hermetic shell (10), an evaporator coil (60), and a plate-type condenser (20). The refrigerant fluid coming from the compressor is supplied to a condenser tube (30), which is formed on a lower plate section (20a) and on an upper plate section (20b) of the condenser (20) and extends from the bottom to the top and back to the bottom. After manufacture, the lower plate section (20a) and the upper plate section (20b) are placed one over the other, the evaporator coil (60) is positioned by a suction tube (70) connected to the compressor.