Abstract: The present invention describes a reciprocating compressor, comprising: an assembly block (10); a rotating shaft (20) comprising at least one inner axial channel (21), said inner axial channel (21) connected to at least one inner radial channel (22a, 22b) or to a cam (23); the cam (23) is associated with a connecting rod (24), and the connecting rod (24) is associated with a movable piston (25) within a compression cylinder (26); and an oil pump (C), comprising: an axial flow electric motor comprising a rotor (30), with magnets (31), and a stator (40) with coils (41); wherein the rotor (30) and the stator (40) are fixed to the shaft (20) and to the assembly block (10), respectively, by means of bearings or fixing arrangements.

Abstract: The present invention relates to a system for the thermal insulation of the suction muffler in compressors, said system being provided with a muffling device and a protection device, and being capable of optimizing the thermal insulation of the refrigerant fluid that will be compressed, making the operation of the compressor more efficient; and in the proposed system, the muffling device and the protection device are connected via connection regions that allow the formation of a gap between the devices, which improves the operation thereof.

Abstract: The invention in question pertains to the technological field of refrigeration compressors. A hermetic compressor for positive displacement is disclosed whose airtight housing is specially altered so that its natural frequencies of vibration are distributed at frequencies above 4200 Hz and whose “capacitance density” is greater than 160 W/L.

Abstract: The present invention refers to a fluid-conducting pipe of a reciprocating compressor made of polymeric material, and further including at least one vibrational energy dissipation element, basically, aiming at solving the problem of noise and the breakage of the pipe deriving from the resonance of the discharge piping in reciprocating compressors operating at high angular speed regimes.

Abstract: Semi-commanded valve system applied to an alternative-type compressor with at least a cylinder (1), at least a piston (2), at least a compression chamber (3), and at least one valve (71;81) acting in their respective orifice (7;8). Said at least one valve (71;81) is prestressed in a first operation state and is able to act as a check valve. Furthermore, said at least one valve (71;81) has at least a ferrous portion and can be selectively actuated by a magnetic field generating element (72;82). Method of modulating the capacity of a compressor provided with such a semi-commanded valve system.

Abstract: It is disclosed a hermetic compressor, provided with at least one fluid expansion chamber, whose useful volume is narrowly defined between a section of one of the faces (inner or outer) of the airtight housing of the compressor and at least one wall section adjacently attached to one of the faces of the airtight housing of the compressor.

Abstract: A hermetic compressor for positive displacement is disclosed whose airtight housing is specially altered so that its natural frequencies of vibration are distributed at frequencies above 4200 Hz and whose “capacitance density” is greater than 160 W/L.

Abstract: Semi-commanded valve system applied to an alternative-type compressor, wherein said compressor comprises at least a cylinder (1), at least a piston (2), at least a compression chamber (3), and at least one valve (71;81) acting in their respective orifice (7;8). Said at least one valve (71;81) is prestressed in a first operation state and is able to act as a check valve. Furthermore, said at least one valve (71;81) comprises at least a ferrous portion and can be selectively actuated by a magnetic field generating element (72;82). Method of modulating the capacity of a compressor provided with such a semi-commanded valve system.

Abstract: The present invention pertaining to the field of refrigeration equipments was designed to allow an unexpected construction and operation, and which is more efficient than the one achieved by using existing similar equipments. It is consisted of a compressor (1) comprised of a shell (2) within which it is located a compression cylinder (3), whereas from the shell (2) it is projected an inlet tube (5) from an evaporator and a discharge tube (6), which conducts the fluid into a condenser; at least one pre-condenser (7) associated with the compressor (1), the pre-condenser (7) being fed by a tubing (8) from the compression cylinder (3) located within the compressor (1), and equipped with an outlet tube (11); and a heat exchanger (91) internal to the outer region of the compressor (1) and cooperative with the pre-condenser (7) through the outlet tube (11) of the pre-condenser (7), the heat exchanger (91) comprising tubes attached around the shell (2) of the compressor (1).

Abstract: The present invention relates to a thermally efficient refrigeration compressor, comprising a housing which surrounds the component parts of the compressor and a heat accumulating material occupying a volume internal (4, 7, 15, 18, 23, 27) or adjacent (9, 11, 30, 32, 37) to the compressor housing. Accordingly, the present invention takes advantage of the thermodynamics existing between the compressor and the refrigeration system, achieving a reduction of the internal temperatures reliably and efficiently and consequently improving the performance of the compressor.

Abstract: Cooling system for reciprocating compressors comprising an atomizing nozzle (1) that supplies an atomized lubricating fluid inside the compressor cylinder (2), a heat exchanger (6) intended for cooling the lubricating fluid to be atomized at the nozzle (1), a fluid separator (5) for separating a mixture of cooling fluid and lubricating fluid and directing the lubricating fluid back from the system, and a blocking element (7) arranged between the atomizing nozzle (1) and the heat exchanger (6) to prevent the buildup of lubricating fluid in the cylinder. Reciprocating compressor having the cooling system as described.