Abstract: Disclosed herein is an orbiting vane compressor having two compression chambers formed in a cylinder according to an orbiting movement of an orbiting vane. The orbiting vane compressor comprises a shell having an inlet tube and an outlet tube, the shell being hermetically sealed such that refrigerant gas is introduced through the inlet tube and is then discharged through the outlet tube, a rotary shaft disposed in the shell while being supported by upper and lower flanges, the rotary shaft being rotated by a drive unit, and a compression unit for compressing refrigerant gas introduced into a cylinder according to an orbiting movement of an orbiting vane, which is attached to the rotary shaft, and discharging the compressed refrigerant gas to the lower part of the cylinder.

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: The double-acting type orbiting vane compressor comprises an orbiting vane having upper and lower circular vanes formed at the upper and lower surfaces of a vane plate of the orbiting vane, respectively, the orbiting vane being attached to a crankshaft rotatable by a drive unit, an upper compression unit having the upper circular vane of the orbiting vane disposed in an upper cylinder, and a lower compression unit having the lower circular vane of the orbiting vane disposed in a lower cylinder. As the orbiting vane performs an orbiting movement in the upper and lower cylinders, refrigerant gases introduced into the upper and lower cylinders through inlet tubes respectively formed at the upper and lower cylinders are compressed, and are then discharged out of the upper and lower cylinders through outlet ports respectively formed at the upper and lower cylinders.

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: 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: 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