Abstract: A scroll compressor that includes: a housing, a drive unit configured to generate a rotating force; and a scroll compression unit having a fixed scroll having a spiral scroll wrap for compressing a suctioned fluid and fixed irrespective of a rotation of a drive shaft of the drive unit and a swivel scroll swiveled according to rotation of the drive shaft and having a spiral scroll wrap, comprises: a main frame disposed within the housing to support a rear surface of the swivel scroll and having a back pressure chamber in an interior thereof; a thrust plate disposed between the swivel scroll and the main frame; and a sealing member inserted between the swivel scroll and the main frame. The sealing member includes a first sealing member inserted between the swivel scroll and the thrust plate, and a second sealing member inserted between the thrust plate and the main frame.

Abstract: Disclosed is a method of controlling an electric compressor. The method includes: (I) starting the electric compressor by applying an electric power to an air conditioner; (II) determining, by an inverter, whether the electric compressor is started normally; and normally driving the electric compressor when the electric compressor starts normally in the step (II) and determining again whether the electric compressor starts normally by restarting the electric compressor. Therefore, abnormal operation such as malfunction, short, and overheating of the electric compressor is detected in the early starting stage to determine restarting and failure of starting the electric compressor so that reliability of the electric compressor may be enhanced.

Abstract: Disclosed is a method of controlling an inverter-integrated electric compressor for a vehicular air conditioning system, which prevents an over-current from being generated due to a load of an inverter for driving the electric compressor and reduces an RPM even without stopping the vehicular air conditioning system, preventing damage to the air conditioning system due to an over-current.

Abstract: A scroll compressor that includes: a housing, a drive unit configured to generate a rotating force; and a scroll compression unit having a fixed scroll having a spiral scroll wrap for compressing a suctioned fluid and fixed irrespective of a rotation of a drive shaft of the drive unit and a swivel scroll swiveled according to rotation of the drive shaft and having a spiral scroll wrap, comprises: a main frame disposed within the housing to support a rear surface of the swivel scroll and having a back pressure chamber in an interior thereof; a thrust plate disposed between the swivel scroll and the main frame; and a sealing member inserted between the swivel scroll and the main frame. The sealing member includes a first sealing member inserted between the swivel scroll and the thrust plate, and a second sealing member inserted between the thrust plate and the main frame.

Abstract: The present invention provides an inverter connection terminal assembly for an electric compressor. The inverter connection terminal assembly includes a connection terminal, in which upper and lower terminal projections project from the upper and lower surfaces of a plate, respectively, an inverter connection cable connected to the upper terminal projection of the connection terminal, a motor connection cable connected to the lower terminal projection of the connection terminal, an upper connector for connecting the upper terminal projection and the inverter connection cable, and a lower connector for connecting the lower terminal projection and the motor connection cable, wherein the lower terminal projection of the connection terminal includes a thread formed on the surface thereof such that the motor connection cable is fixed to the lower terminal projection by fastening a nut while a washer and a ring connector are sequentially inserted into the lower terminal projection.

Abstract: The present invention provides an inverter connection terminal assembly for an electric compressor. The inverter connection terminal assembly includes a connection terminal, in which upper and lower terminal projections project from the upper and lower surfaces of a plate, respectively, an inverter connection cable connected to the upper terminal projection of the connection terminal, a motor connection cable connected to the lower terminal projection of the connection terminal, an upper connector for connecting the upper terminal projection and the inverter connection cable, and a lower connector for connecting the lower terminal projection and the motor connection cable, wherein the lower terminal projection of the connection terminal includes a thread formed on the surface thereof such that the motor connection cable is fixed to the lower terminal projection by fastening a nut while a washer and a ring connector are sequentially inserted into the lower terminal projection.

Abstract: A scroll compressor includes an orbiting scroll having a compressor chamber in an upper portion thereof and a bypass passage formed through upper and lower ends of a body thereof, a fixed scroll that allows the orbiting scroll to orbit therein to compress a coolant, an Oldham ring on which the orbiting scroll is seated, the Oldham ring having an upper chamber formed on an upper surface thereof with predetermined width and depth and a lower chamber formed on a lower surface thereof with predetermined width and depth, and a main frame on which the Oldham ring is seated.

Abstract: A scroll compressor, which allows refrigerant in a compressor chamber to be partially discharged so that frictions generated in frictional surfaces between an orbiting scroll and an Oldham ring and between the Oldham ring and a main frame may be decreased. Also, an upper chamber may be formed on an upper surface thereof and a lower chamber may be formed on a lower surface thereof. An oil supply structure may be provided in a main frame such that lubrication is smoothly performed. Additionally, at least one key may be provided protruding from the lower surface of the Oldham ring. Further, the main frame may include at least one key groove configured to receive the at least one key of the Oldham ring. Additionally, the oil supply groove may be provided separately from and in communication with the at least one key groove.

Abstract: Disclosed herein is a back pressure apparatus for orbiting vane compressors that is capable of reducing excessive axial force applied to an orbiting vane due to high-pressure refrigerant gas introduced to the lower surface of a vane plate of the orbiting vane. The back pressure apparatus comprises a back pressure chamber formed at the upper surface of a main frame, which is brought into tight contact with the lower surface of a vane plate of an orbiting vane, and a low-pressure gas communication part for allowing the back pressure chamber and an inlet port to communicate with each other therethrough. Consequently, the present invention has the effect of preventing excessive friction between the orbiting vane and the inner surface of a cylinder, preventing damage to the orbiting vane compressor due to the friction, and preventing deterioration of performance of the orbiting vane compressor due to the frictional loss.

Abstract: Disclosed herein is a back pressure apparatus for orbiting vane compressors that is capable of reducing excessive axial force applied to an orbiting vane due to high-pressure refrigerant gas introduced to the lower surface of a vane plate of the orbiting vane. The back pressure apparatus comprises a back pressure chamber formed at the upper surface of a main frame, which is brought into tight contact with the lower surface of a vane plate of an orbiting vane, and a low-pressure gas communication part for allowing the back pressure chamber and an inlet port to communicate with each other therethrough. Consequently, the present invention has the effect of preventing excessive friction between the orbiting vane and the inner surface of a cylinder, preventing damage to the orbiting vane compressor due to the friction, and preventing deterioration of performance of the orbiting vane compressor due to the frictional loss.

Abstract: An oil discharge reducing device for a scroll compressor comprises: a refrigerant guiding mechanism for guiding a refrigerant gas of high pressure discharged through a discharge opening of the fixed scroll to a rotor of the driving motor; and an oil separating mechanism penetrated through the rotor and for separating oil contained in the refrigerant gas by a centrifugal force caused by the rotation of the rotor while the refrigerant gas guided by the refrigerant guiding mechanism cools the driving motor as it flows though the driving motor. According to this, an amount of oil leaked to outside of the compressor is minimized, and the driving motor constituting the compressor can be effectively cooled.

Abstract: A vacuum preventing device of a scroll compressor includes: a chamber formed at one side of a fixed scroll and having a suction pressure hole, a middle pressure hole and a discharge pressure hole communicating with a suction pressure zone, a middle pressure zone and a discharge pressure zone, each formed at a certain portion of an inner circumferential surface; an open and shut member installed inside the chamber and selectively communicating the discharge pressure hole and the suction pressure hole by virtue of a gas pressure of the middle pressure zone and an elastic force of a spring; and a gas leakage preventing unit for preventing a gas leakage in a normal operation by reducing a clearance between an inner wall of the chamber positioned at the side of the discharge pressure hole and the open and shut member.

Abstract: A scroll compressor having a refrigerant gas guide structure includes: a casing forming a hermetic receiving space therein, and having a suction pipe for sucking a refrigerant gas and a discharge pipe for discharging a refrigerant gas; a fixed scroll having a wrap of an involute shape and a discharge hole for discharging a compressed refrigerant gas, and disposed in the casing; an orbiting scroll having a wrap of an involute shape, coupled with the fixed scroll and orbiting relative to the fixed scroll; and a gas guide member installed in the casing, for guiding the refrigerant gas discharged through the discharge 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 rotation preventive device for a scroll compressor, by forming a rotation preventive member for preventing a rotation of an orbiting scroll between a frame and an orbiting scroll or a fixed scroll and the orbiting scroll as a rectangular shape performable a sliding motion in a radial direction, it is possible to fabricate the rotation preventive member as small and light weight, accordingly the cost of materials can be reduced. In addition, by reducing abrasion between each key and each key groove, a stability of the orbiting scroll can be maintained, and by preventing a leakage of gas from happening, a reliability and an efficiency of a compressor can be improved and a noise of the compressor can be decreased.

Abstract: A discharge valve assembly of fluid machinery is provided. The discharge valve assembly of fluid machinery includes a valve housing connected to a discharge side of a compression chamber, forming a valve holding space for holding a valve, forming a discharge hole on one side of the valve holding space, forming a back current hole in the other side of the valve holding space to be separated from the discharge hole, and fixedly installed in a discharge chamber, and a sliding valve positioned between the discharge side of the compression chamber and the discharge hole of the valve housing so as to open and close the discharge hole while sliding according to the pressure of the compression chamber and the pressure of the discharge chamber and inserted into the valve holding space to slide. The sliding valve completely opens the discharge side of the compression chamber and the discharge hole of the valve housing when compressed refrigerant gas is discharged.

Abstract: A scroll compressor properly copes with a volume variation of a compressing chamber due to an inflow of an incompressible fluid by installing a radial moving apparatus between an eccentric part of a crankshaft and an orbiting scroll which enables the orbiting scroll to move radially so as to prevent the breakage of the scroll and improve a reliance of the compressor. The present invention includes a casing, a driving unit arranged at a lower side of the casing and connected to a crankshaft so as to generate a driving force, a compressing unit having an orbiting scroll eccentrically connected to the crankshaft and a fixed scroll to form a compressing chamber between the orbiting and fixed scrolls, and a compliance device installed between the compressing unit and the crankshaft for retreating the orbiting scroll in a radial direction when an incompressible material flows in the compressing chamber.

Abstract: A variable quantity control apparatus for a variable radius type scroll compressor comprises: a rotary shaft coupled to an orbiting scroll for transmitting a rotating force of a driving motor to the orbiting scroll; and an eccentric bushing coupled to a driving pin part of the rotary shaft for transmitting the rotating force of the driving motor and at the same time, for restraining a recession amount of the orbiting scroll, whereby manufacturing cost can be reduced because an additional stopper member can be excluded and the number of components and the number of assembling processes are reduced, and the recession of the eccentric bushing (or the orbiting scroll) can be stably restrained by the surface contacting of a cut surface of the rotary shaft and stopping surfaces of the eccentric bushing.

Abstract: In a scroll compressor, in order to provide a structure of a driving pin for a scroll compressor which is capable of transmitting a rotational force by being combined with a rotating scroll, in a scroll compressor comprising a fixed scroll having a wrap, a rotating scroll having a wrap engaged with the wrap of the fixed scroll and performing a rotational motion in a radial direction of the rotational axis of a driving device, a driving pin eccentrically formed at the rotational axis of the driving device and inserted into a boss of the rotating scroll and a bush member interposed between the boss of the rotating scroll and the driving pin, the driving pin has a length shorter than a length of the bush member. Accordingly, it is possible to prevent a damage of a driving pin due to a stress concentration by reducing a bending moment of the driving pin.