Abstract: A frame unit provided in a compressor and a method of manufacturing the frame unit with improved productivity. The frame unit is secured between a cylinder block and a stator of the compressor and is adapted to rotatably support a rotary shaft press fitted in a rotor located inside the stator.

Abstract: A connecting rod apparatus for converting a rotational motion to a reciprocal linear motion by connecting an eccentric portion of a crank shaft to a piston. The connecting rod apparatus has a bushing, a connecting rod and a connecting member. The bushing is rotatably connected with the eccentric portion, and has a sloping side on its outer surface with a predetermined slope in regard to an axis of the eccentric portion. The connecting rod has a piston attachment formed at one end for being connected with a piston pin which is connected with the piston. A connecting portion is formed at another end of the connecting rod and is connected with the bushing in a direction of the axis along the sloping side of the bushing. The connecting member connects the connecting portion and the bushing so that the connecting portion and the bushing can move relative to one another.

Abstract: Disclosed herein are a cylinder assembly for compressors, a compressor with the cylinder assembly, and an apparatus having a refrigerant circulation circuit with the compressor. The present invention provides the cylinder assembly, which has a simple structure and is designed to further reduce a pulse noise. The cylinder assembly includes a cylinder block having two exhaust mufflers. Each of the exhaust mufflers is opened at an end thereof. A frame is mounted to the cylinder block to cover the open ends of the exhaust mufflers. At least one channel is formed at a junction between the cylinder block and the frame to allow a refrigerant to flow between the exhaust mufflers. Further, the cylinder assembly of the present invention is applied to a compressor, and the compressor of the present invention is applied to an apparatus having a refrigerant circulation circuit.

Abstract: A valve assembly for the reciprocating compressors, elements of which are easily and simply assembled into a single body, and which reduces operational impact and noise caused by an operation of a reed valve, thus allowing a silent operation of the reciprocating compressors. The valve assembly includes an exhaust hole plate having an exhaust hole, a reed valve plate having a reed valve, a stopper plate having a stopper, and a pressure unit formed on a lower surface of a cylinder head, wherein the exhaust hole plate, the reed valve plate and the stopper plate are assembled with the cylinder together with the cylinder head when the cylinder head is mounted to the cylinder. The stopper is bent at a junction end thereof at a predetermined angle of inclination, so that a free end of the stopper is raised toward the cylinder head.

Abstract: A hermetic compressor having a cylinder assembly comprising a casing into which refrigerant flows, a rotor rotatably inserted in a stator disposed inside the casing, crank shaft, connecting rod connected with the crank shaft, piston, and cylinder assembly comprising a cylinder block, a valve plate connected with one side of the cylinder block and having a suction port for sucking refrigerant into the cylinder and discharge port for discharging the compressed refrigerant from the cylinder in the cylinder block, a suction valve for selectively opening the suction port, discharge valve for selectively opening the discharge port, cylinder head having suction and discharge chambers, a refrigerant path formed at one side of the cylinder head for letting refrigerant flow into the suction chamber, and a groove removed from the refrigerant path formed on the valve plate for guiding refrigerant from inside the casing into the suction chamber.

Abstract: A hermetic compressor, in which a damping unit is mounted on an inner surface of a hermetic casing to stably and elastically support the hermetic casing and change a resonant frequency of the hermetic casing. The damping unit is provided at a predetermined position of an upper casing part of the hermetic casing to elastically support the upper casing part with predetermined elasticity. The damping unit has a mounting part at which the damping unit is mounted to the upper casing part, and an elastic support part to elastically support the upper casing part. The elastic support part has a flange part projected in a direction to a length which exceeds a plane aligned with a surface of the mounting part. The flange part thus elastically supports the hermetic casing in a state of being elastically deformed. The elastic support part also has a wing part to connect the flange part to the mounting part. The wing part is rounded in a direction opposite to a projected direction of the flange part.

Abstract: A valve assembly for the reciprocating compressors, elements of which are easily and simply assembled into a single body, and which reduces operational impact and noise caused by an operation of a reed valve, thus allowing a silent operation of the reciprocating compressors. The valve assembly includes an exhaust hole plate having an exhaust hole, a reed valve plate having a reed valve, a stopper plate having a stopper, and a pressure unit formed on a lower surface of a cylinder head, wherein the exhaust hole plate, the reed valve plate and the stopper plate are assembled with the cylinder together with the cylinder head when the cylinder head is mounted to the cylinder. The stopper is bent at a junction end thereof at a predetermined angle of inclination, so that a free end of the stopper is raised toward the cylinder head.

Abstract: Disclosed herein are a cylinder assembly for compressors, a compressor with the cylinder assembly, and an apparatus having a refrigerant circulation circuit with the compressor. The present invention provides the cylinder assembly, which has a simple structure and is designed to further reduce a pulse noise. The cylinder assembly includes a cylinder block having two exhaust mufflers. Each of the exhaust mufflers is opened at an end thereof. A frame is mounted to the cylinder block to cover the open ends of the exhaust mufflers. At least one channel is formed at a junction between the cylinder block and the frame to allow a refrigerant to flow between the exhaust mufflers. Further, the cylinder assembly of the present invention is applied to a compressor, and the compressor of the present invention is applied to an apparatus having a refrigerant circulation circuit.

Abstract: A protective cover mounting apparatus for a hermetic compressor for removably mounting a protective cover to protect electrical parts disposed on a terminal portion of a hermetic compressor casing comprises a pair of first protrusions respectively formed on two facing sides of the protective cover for protecting electrical parts disposed on a terminal portion of a hermetic compressor casing, a second protrusion formed on a side that is removed from the casing when the protective cover is mounted on the casing, a clamp pivotably disposed on the casing and including a pressing portion and a holding portion formed to correspond to the first and second protrusions.

Abstract: A connecting rod apparatus of a compressor for converting a rotation to a reciprocal sliding by connecting an eccentric portion of a crank shaft and a piston. The connecting rod apparatus has: a bush rotatably connected with the eccentric portion, and having a first connecting portion with a pair of sloping sides at an outer circumference, the sloping sides have a predetermined slope in regard to an axis of the eccentric portion; a connecting rod having a small inner diameter for being connected with a piston pin connected with the piston, the small inner diameter is formed at one end of the connecting rod, and a second connecting portion for being connected with the first connecting portion in a direction of the axis along the sloping sides.

Abstract: In a connecting apparatus of a hermetic reciprocal compressor to convert a rotary movement into a reciprocal sliding movement by connecting an eccentric portion of a crankshaft and a piston, the connecting apparatus has a ball; a first connecting member having a small diameter portion connected with a piston pin being connected with the piston, and a connection portion extended from the small diameter portion, which has a ball embracing surface to embrace the ball and supports the ball to be moved; a second connecting member having a large diameter portion rotatably connected with the eccentric portion, and an extending yoke portion at an outside of the large diameter, which supports the ball against the embracing surface and prevents the ball from being separated; and a third connecting member to connect the first connecting member and the second connecting member such that the first connecting member an the second connecting member relatively move with the ball being placed therebetween.

Abstract: A joint structure for a refrigerant discharge tube of a hermetic reciprocal compressor having a connecting member fit around the refrigerant discharge tube, the connecting member having a shape corresponding to a connecting hole in a cylinder block, thereby allowing the connecting member to be press-caulked. The refrigerant discharge tube is directly connected to the cylinder block. The connecting hole is multi-layered and may be formed into at least two steps. The connecting member is pre-assembled in the connecting hole by transition-fitting. Accordingly, as the connecting member is press-fit in the connecting hole by a caulking-jig, the connecting member is expanded, and the connecting member is more securely fit in the connecting hole. Further, a thread portion having a pitch in a range of 2 to 5 threads is formed on an inner circumference of the connecting hole.

Abstract: A protective cover mounting apparatus for a hermetic compressor for removably mounting a protective cover to protect electrical parts disposed on a terminal portion of a hermetic compressor casing comprises a pair of first protrusions respectively formed on two facing sides of the protective cover for protecting electrical parts disposed on a terminal portion of a hermetic compressor casing, a second protrusion formed on a side that is removed from the casing when the protective cover is mounted on the casing, a clamp pivotably disposed on the casing and including a pressing portion and a holding portion formed to correspond to the first and second protrusions.

Abstract: A method of manufacturing a crank shaft for a hermetic reciprocating compressor comprises the steps of forming the main shaft portion and a weight balancing member eccentric with respect to the main shaft portion, forming the weight balancing member positioned adjacent an end of the main shaft portion and between the weight balancing member and the crank portion of the crank shaft member, assembling the crank shaft member and the weight balancing member by caulking, and attaching the assembled crank shaft member and weight balancing member by brazing. The crank shaft member includes the main shaft portion and the crank portion eccentric with respect to the main shaft portion as manufactured by cold forming a ferrous pipe or a solid drawn steel tube. The weight balancing member is formed by press processing a ferrous cold-rolled plate.

Abstract: Disclosed is the reciprocating compressor according to the present invention comprising a main frame disposed inside a case to support an electrically-driven unit, a cylinder block connected with the main frame and having a compression chamber, a cylinder head having a refrigerant discharge chamber and connected with the cylinder block to seal the compression chamber, a first discharge muffler disposed at one side of the cylinder block, a second discharge muffler connected with a refrigerant discharge pipe and disposed at other side of the cylinder block, a refrigerant path connecting the refrigerant discharge chamber and the first discharge muffler, and a connecting path formed to penetrate the cylinder block to connect the first discharge muffler and the second discharge muffler.

Abstract: A supercharging device of a hermetic compressor comprises a suction chamber connected with a suction pipe and a cylinder, the suction chamber formed at lower side of a cylinder block; a suction fan rotatably disposed in the suction chamber; a driving pulley disposed on a lower end of a crankshaft; a driven pulley disposed on a rotating shaft of the suction fan; and a belt connecting the driving pulley and the driven pulley. Accordingly, the suction fan rotates with the crankshaft, and moves the refrigerant in the suction chamber to the cylinder, and thus the amount of the refrigerant drawn into the cylinder is increased and consequently the volume efficiency of the compressor is increased.

Abstract: A hermetic compressor having a cylinder assembly comprising a casing into which refrigerant flows, a rotor rotatably inserted in a stator disposed inside the casing, a crank shaft rotated by the rotor, a connecting rod having one end connected with the crank shaft, a piston contacted with another end of the connecting rod, and a cylinder assembly in which refrigerant is compressed by operation of the piston, and a cylinder assembly comprising a cylinder block having a cylinder for compressing refrigerant, a valve plate connected with one side of the cylinder block and having a suction port for sucking refrigerant into the cylinder and a discharge port for discharging the compressed refrigerant from the cylinder, a suction valve for opening and closing the suction port, a discharge valve for opening and closing the discharge port, a cylinder head disposed at one side of the valve plate and having a suction chamber and a discharge chamber, a refrigerant path formed at one side of the cylinder head for letting r

Abstract: A hermetic reciprocating piston compressor capable of reducing vibration, noise, starting voltage, and power consumption, comprising a cylinder block; a cylinder head that is attached at the cylinder block and having a discharging chamber; a valve plate inserted between the cylinder block and the cylinder head: a first discharging muffler connected with the discharging chamber by a discharging passage disposed between the valve plate and the cylinder block; and a second discharging muffler connected to the first muffler at one end thereof by the connection pipe, and the discharging pipe being connected with another end the second discharging muffler, wherein the connection pipe has plural passages in a middle part thereof, and the passages merge to become one passage at both ends thereof.

Abstract: In a connecting apparatus of a hermetic reciprocal compressor to convert a rotary movement into a reciprocal sliding movement by connecting an eccentric portion of a crankshaft and a piston, the connecting apparatus has a ball; a first connecting member having a small diameter portion connected with a piston pin being connected with the piston, and a connection portion extended from the small diameter portion, which has a ball embracing surface to embrace the ball and supports the ball to be moved; a second connecting member having a large diameter portion rotatably connected with the eccentric portion, and an extending yoke portion at an outside of the large diameter, which supports the ball against the embracing surface and prevents the ball from being separated; and a third connecting member to connect the first connecting member and the second connecting member such that the first connecting member an the second connecting member relatively move with the ball being placed therebetween.

Abstract: A method of manufacturing a crank shaft for a hermetic reciprocal compressor including the steps of providing a main shaft and a crank portion eccentric for a predetermined degree from the main shaft that are separately formed. The main shaft and the crank portion are joined through laser welding. The main shaft is a hollow pipe and the crank portion is made by sintering. The main shaft and the crank portion are connected, and an end portion of the main shaft is inserted into an annular groove formed at a main shaft connection side of the crank portion. Accordingly, the main shaft is a drawn steel pipe, and the crank portion is formed by sintering, thus the crank shaft becomes lighter and no post-process is needed. Therefore, the manufacturing process is remarkably reduced, and the crank shaft manufactured at a lower production cost.