Abstract: Disclosed herein is a hermetically sealed type orbiting vane compressor constructed using an refrigerant gas compressing semi-hermetic vane compressor that comprises a hermetically sealed shell having an inlet tube and an outlet tube, a crankshaft having an oil supplying channel formed longitudinally therethrough, the crankshaft being rotated by a drive unit, a compression unit, having an orbiting vane connected to the crankshaft, for compressing and discharging refrigerant gas introduced into a cylinder according to an orbiting movement of the orbiting vane in an annular space defined in the cylinder, and an oil hole formed at a vane plate of the orbiting vane for allowing oil supplied through the crankshaft to be provided to the vane plate therethrough.

Abstract: Disclosed herein is a compression unit of an orbiting vane compressor having improved tight contact between a circular vane and sealing means wherein the sealing means can be easily manufactured. The compression unit compresses refrigerant gas introduced by an orbiting movement of a circular vane in an annular space defined between the inner wall of a cylinder and an inner ring. The compression unit comprises a first horizontal contact surface formed at the outer circumferential surface of the inner ring, a second horizontal contact surface formed at the inner wall of the cylinder while being parallel with the first horizontal contact surface, and a linear slider disposed in an opening formed at the circular vane for performing a linear reciprocating movement along the first and second horizontal contact surfaces.

Abstract: Disclosed herein is an orbiting vane compressor with a side-inlet structure that is capable of compressing air in a cylinder according to an orbiting movement of an orbiting vane, the orbiting vane compressor being applied to a refrigerant compressor having refrigerant gas inlet and outlet channels isolated from each other, thereby increasing the sectional area of the refrigerant gas inlet channel. Refrigerant gas is introduced into the cylinder from the side of the cylinder, is compressed in the cylinder, and is then discharged upward or downward out of the cylinder. As a result, refrigerant gas introduced into the cylinder through the refrigerant gas inlet channel is prevented from being heated by compressed refrigerant gas discharged through the refrigerant gas outlet channel.

Abstract: Disclosed herein is a capacity-changing unit disposed in an orbiting vane compressor, which compresses refrigerant gas introduced into a cylinder through an orbiting movement of an orbiting vane in the cylinder, for easily changing capacity of the orbiting vane compressor in a mechanical bypass fashion. The capacity-changing unit comprises a bypass channel communicating with an outer compression chamber formed in the cylinder, and a bypass valve disposed on the bypass channel for opening and closing the bypass channel. According to the present invention, the orbiting vane compressor is selectively operated not only in normal operation mode where compression is performed in an inner compression chamber as well as the outer compression chamber but also in economic operation mode where compression is performed only in the inner compression chamber.

Abstract: An eccentric coupling device in a radial compliance scroll compressor including: a crank pin eccentrically arranged provided at an upper end of a crankshaft included in the scroll compressor, and provided with a vertically-extending cut surface at one side thereof; an eccentric bush provided with a crank pin hole adapted to receive the crank pin, and a stopper hole provided at the eccentric bush at one side of the crank pin hole such that the stopper hole overlaps with the crank pin hole; a stopper fitted in the stopper hole such that the stopper is radially protruded into the crank pin hole toward the cut surface to selectively come into contact with the cut surface in accordance with a rotation of the bush; and a spring wire adapted to elastically support the eccentric bush, while connecting the stopper and the crank pin, thereby preventing an elevation of the eccentric bush.

Abstract: An eccentric coupling device in a radial compliance scroll compressor including a crank pin eccentrically arranged at an upper end of a crankshaft included in the scroll compressor, and provided with a vertically-extending cut surface at one side thereof, a bush fitted around the crank pin, and provided with a crank pin hole and a stopper hole, a stopper fitted in the stopper hole, and an engagement jaw adapted to prevent a vertical movement of the stopper, thereby preventing a vertical movement of the bush, the engagement jaw being provided at an upper end of the crank pin. The bush is arranged such that an upper end thereof is flush with an upper end of the crank pin. The stopper hole overlaps with the crank pin hole so that the stopper selectively comes into contact with the cut surface in accordance with a rotation of the crank pin. The stopper has a length shorter than that of the stopper hole.

Abstract: Disclosed is a vacuum preventing device of a scroll compressor comprising: a discharge cover installed at a body of a fixed scroll for dividing inside of a case into a discharge region and a suction region; a vacuum cylinder installed in the discharge cover thus to be connected to a compression chamber formed between the fixed scroll and an orbiting scroll and having a pressure space therein so that the discharge region can be connected to the suction region; a piston movably installed in the pressure space for selectively connecting the discharge region with the suction region by a pressure difference between the compression chamber and the suction region; and an elastic member installed in the pressure space for providing an elastic force to the piston.

Abstract: Disclosed is a vacuum preventing device of a scroll compressor comprising: a discharge cover installed at a body of a fixed scroll for dividing inside of a case into a discharge region and a suction region; a vacuum cylinder installed in the discharge cover thus to be connected to a compression chamber formed between the fixed scroll and an orbiting scroll and having a pressure space therein so that the discharge region can be connected to the suction region; a piston movably installed in the pressure space for selectively connecting the discharge region with the suction region by a pressure difference between the compression chamber and the suction region; and an elastic member installed in the pressure space for providing an elastic force to the piston.

Abstract: In a scroll compressor, by including a frame fixed at an internal space of a casing; a fixed scroll fixed to the frame and having an involute-shaped wrap; an orbiting scroll installed so as to perform an orbiting motion between the frame and the fixed scroll and having an involute-shaped wrap so as to form a compression space moving continually by being engaged with the wrap of the fixed scroll; a driving motor installed at the internal space of the casing in order to generate a driving force for making the orbiting scroll perform the orbiting motion; a discharge cover sealed-installed so as to form a discharge space with the fixed scroll; and an overheating preventive device including a temperature sensing device installed at the discharge cover so as to stop the operation of the driving motor when a temperature of a refrigerant gas is not less than a certain temperature and an over load protector installed at an upper portion of the driving motor, after sensing a temperature, by operating the over load prot