Abstract: A compressor and an air-conditioner having a compressor are provided. The air-conditioner may be operated in a pre-set operation mode according to a detected application voltage or in a pre-set operation mode according to a pre-set time domain. A compressor temperature or an ambient temperature may be detected to operate the air-conditioner in the pre-set operation mode according to the detected application voltage or in the pre-set operation mode according to the pre-set time domain to continuously operate the compressor.

Abstract: A variable capacity type rotary compressor and a cooling apparatus having the same, and an operation method thereof are provided. In the variable capacity type rotary compressor and the cooling apparatus having the same, a discharge pressure is supplied to a rear side of a second vane disposed in the compressor after the discharge pressure is higher than a reference pressure, so that the compressor is switched from a saving mode into a power mode. The second vane is press-contacted with a second rolling piston with fast and accurately moving without vibration, resulting in preventing beforehand noise occurrence or efficiency degradation due to the vibration of the second vane when the compressor or the cooling apparatus having the compressor is operated in the power mode.

Abstract: An apparatus and method for controlling an operation of a compressor are disclosed to enhance a compressor efficiency in each operation mode in operating a compressor in a power mode or power saving mode according to an external load. The apparatus for controlling an operation of a compressor, including: a controller that generates a control signal to select an operation mode of the compressor according to an operation load of the compressor; a compressor motor that includes a main coil and a sub-coil and is driven in one of a plurality of operation modes according to a control signal of the controller; and a power supply unit that applies power via capacitors each having a different capacitance to the sub-coil of the compressor motor according to a control signal of the controller.

Abstract: Disclosed is a rotary compressor in which a connecting protrusion is formed at an inner circumferential surface of a vane chamber in which a connection tube is inserted, so as to increase a sealing area between the connection hole and the connection tube, and the size of the connection hole is definitely designated so as to prevent the deformation of the cylinder when press-fitting the connection tube into the connection hole, whereby an amount of leaked refrigerant from the vane chamber can remarkably be reduced and accordingly a fast and accurate mode switching of the vane can be achieved, thereby improving the performance of the compressor and preventing noise caused by vibration of the vane in advance.

Abstract: A variable capacity type rotary compressor, in which a refrigerant sucked in via one suction pipe can be alternately sucked into each compression space via a communication passage between cylinders so as to reduce a number of components and a number of assembly processes, thereby reducing fabrication costs. A refrigerant within an idling cylinder is prevented from flowing back into another cylinder so as to improve performance of the compressor. A welding space can be ensured when connecting connection pipes so as to realize a welding automation, thereby further reducing the fabrication cost, and a mode switching valve is stably fixed to an appropriate position so as to attenuate noise due to vibration of compressor.

Abstract: A rotary compressor is provided, in which an inner diameter of a connection hole connected to a vane chamber and an outer diameter of a connection tube inserted into the connection hole are designated so that the connection tube can closely be adhered to the connection hole, thereby preventing a refrigerant from being leaked out between the connection hole and the connection tube so as to allow a fast and accurate mode switching of the vane, resulting in improvement of the performance of the compressor and prevention of noise caused by vibration of the vane.

Abstract: The present invention provides a 2 stage rotary compressor including a hermetic container (101), an electric motor (110) composed of an stator (111), a rotor (112) and a rotation axis (113), a low pressure compression assembly (120) including a low pressure cylinder (121), a high pressure compression (130) assembly including a high pressure cylinder (131), a middle plate (140) for separating the low pressure cylinder (121) from the high pressure cylinder (131), middle pressure communication holes (161a, 140a) formed in the low pressure cylinder (121) and the middle plate (140) to communicate with each other, and a middle pressure inflow groove (130a) formed in the high pressure cylinder (131) to communicate with the communication holes (161a, 140a) of the low pressure cylinder (121) and the middle plate (140).

Abstract: A 2 stage rotary compressor is provided that includes a hermetic container that defines an outward appearance of the compressor; a 2 stage compression assembly provided in the hermetic container, wherein a low pressure cylinder, a middle plate, and a high pressure cylinder are successively stacked from any one of upper and lower portions; and first discharge port that discharges refrigerant compressed in the low pressure cylinder, and having an inner volume equivalent to 0.5% to 2.5% of an inner volume of the low pressure cylinder. A valve is installed on or under the discharge port. When the valve is opened, compressed refrigerant is discharged through the discharge port. When the valve is closed, refrigerant remains in the discharge port as much as the volume of the discharge port. Accordingly, refrigerant remaining in the discharge port is re-expanded in the cylinder, to thereby cause a compression loss.

Abstract: The present invention provides a 2 stage rotary compressor (100) including a hermetic container (101), a 2 stage compression assembly provided in the hermetic container, wherein a low pressure compression assembly (120), a middle plate (130) and a high pressure compression assembly (140) are successively stacked from any one of upper and lower portions, a first discharge port (124) for discharging middle pressure refrigerant compressed in the low pressure compression assembly (120) a second discharge port (162p) for discharging high pressure refrigerant compressed in the high pressure compression assembly (130) and a third discharge port (172p) positioned at any one of the upper and lower portions of the 2 stage compression assembly to discharge high pressure refrigerant compressed in the 2 stage compression assembly to the hermetic container (101), wherein an area of the third discharge port (172p) is larger than 0.5 times of an area of the first discharge port and smaller than 1.0 times thereof.

Abstract: A variable capacity rotary compressor includes a rolling piston eccentrically rotated in the compression space of the cylinder assembly, and a vane coming in contact with the rolling piston. A vane restricting device restricts the vane by applying a pressure onto a side face of the vane, where a sectional area A of a passage through which the restriction pressure is applied to the side face of the vane is formed so as not to be larger than a vane area B of the vane to which the restriction pressure is applied through a passage. The passage includes a first passage for connecting an inner space of the casing to a vane slot which is provided in the cylinder assembly and has the vane slidably inserted therein, and a second passage for connecting the vane slot to an inlet which is connected to the suction chamber of the cylinder assembly.

Abstract: A capacity varying type rotary compressor and a refrigeration system having the same are provided. The capacity varying type rotary compressor includes a casing that contains a certain amount of oil and maintains a discharge pressure state; a motor installed in the casing that generates a driving force; one or more cylinder assembly fixed in the casing, having a compression space that compresses a refrigerant by a rolling piston that performs an orbit motion and a vane that performs a linear motion by contacting the rolling piston, and having a vane pressure chamber formed at a rear side of the vane that implements a normal driving as the vane contacts the rolling piston or a saving driving as the vane is separated from the rolling piston; and a mode switching device that selectively supplies a suction pressure or a discharge pressure to the vane pressure chamber of the cylinder assembly according to a driving mode.

Abstract: A variable capacity rotary compressor is provided, in which a vane may be restricted by a pressure difference generated between both side surfaces of the vane when the compressor performs in a saving driving mode. The vane may be restricted quickly and stably by rapidly decreasing a pressure of a vane chamber by leaking a discharge pressure of the vane chamber to an inlet via a low pressure passage and thereby increasing a pressurizing force applied to a side surface of the vane relatively greater than a supporting force applied to a rear surface thereof. In this way, the vane may be prevented from being vibrated due to a weak restriction force of the vane when a power driving mode of the compressor is switched into the saving driving mode, which prevents noise from increasing due to design conditions, thereby enhancing a comfort feeling of a user.

Abstract: Disclosed is a rotary compressor in which an inner diameter of a connection hole connected to a vane chamber and an outer diameter of a connection tube inserted into the connection hole are designated so that the connection tube can closely be adhered to the connection hole, thereby preventing a refrigerant from being leaked out between the connection hole and the connection tube so as to allow a fast and accurate mode switching of the vane, resulting in improvement of the performance of the compressor and prevention of noise caused by vibration of the vane.

Abstract: Disclosed is a variable capacity type rotary compressor (1), a cooling apparatus having the same, and an operation method thereof, wherein in the variable capacity type rotary compressor (1) and the cooling apparatus having the same, a discharge pressure to be supplied to a rear side of a second vane (430) disposed in the compressor (1) is supplied after being higher than a reference pressure, so that the compressor (1) can be switched from a saving mode into a power mode, whereby the second vane (430) can be press-contacted with a second rolling piston (420) with fast and accurately moving without vibration, resulting in preventing beforehand noise occurrence or efficiency degradation due to the vibration of the second vane (430) when the compressor (1) or the cooling apparatus having the compressor (1) is operated in the power mode.

Abstract: Disclosed is a rotary compressor in which a connecting protrusion is formed at an inner circumferential surface of a vane chamber in which a connection tube is inserted, so as to increase a sealing area between the connection hole and the connection tube, and the size of the connection hole is definitely designated so as to prevent the deformation of the cylinder when press-fitting the connection tube into the connection hole, whereby an amount of leaked refrigerant from the vane chamber can remarkably be reduced and accordingly a fast and accurate mode switching of the vane can be achieved, thereby improving the performance of the compressor and preventing noise caused by vibration of the vane in advance.

Abstract: Disclosed is a variable capacity type rotary compressor, in which a refrigerant sucked via one suction pipe can be alternately sucked into each compression space via a communication passage between a plurality of cylinders so as to reduce the number of components and the number of assembly processes, thereby remarkably reducing a fabricating cost, a refrigerant within an idling cylinder can be prevented from flowing back into another cylinder so as to improve the performance of the compressor, a welding space can be ensured when connecting connection pipes so as to realize a welding automation, thereby further reducing the fabricating cost, and a mode switching valve can be stably fixed to an appropriate position so as to attenuate noise due to vibration of the compressor.

Abstract: A compressor and an air-conditioner having the same are disclosed. A compressor application voltage is detected, and the air-conditioner is operated in a pre-set operation mode according to the detection result, or the air-conditioner is operated in a pre-set operation mode in a certain time domain, thus continuously operate the compressor. Or, a compressor temperature or an ambient temperature is detected to operate the air-conditioner in a pre-set operation mode or operate the air-conditioner in a pre-set operation mode within a certain time domain, thus continuously operate the compressor. Accordingly, the compressor can be operated in a particular operation mode within a certain time slot regardless of an ambient temperature, whereby an excessive cooling operation cannot be performed at night to thus provide an agreeable cooling operation and reduce noise.

Abstract: A capacity varying type rotary compressor and a refrigeration system having the same are provided. The capacity varying type rotary compressor includes a casing that contains a certain amount of oil and maintains a discharge pressure state; a motor installed in the casing that generates a driving force; one or more cylinder assembly fixed in the casing, having a compression space that compresses a refrigerant by a rolling piston that performs an orbit motion and a vane that performs a linear motion by contacting the rolling piston, and having a vane pressure chamber formed at a rear side of the vane that implements a normal driving as the vane contacts the rolling piston or a saving driving as the vane is separated from the rolling piston; and a mode switching device that selectively supplies a suction pressure or a discharge pressure to the vane pressure chamber of the cylinder assembly according to a driving mode.

Abstract: The present invention provides a 2 stage rotary compressor including a hermetic container (101), a 2 stage compression assembly provided in the hermetic container (101) and including a low pressure compression assembly (120), a middle plate (140) and a high pressure compression assembly (130), a low pressure refrigerant inflow portion (126) provided in the low pressure compression assembly (120) to introduce low pressure refrigerant, and a middle pressure refrigerant inflow portion (130a) provided in the high pressure compression assembly (130) to introduce middle pressure refrigerant compressed in the low pressure compression assembly (120), wherein a diameter of the middle pressure refrigerant inflow portion (130a) larger than 0.5 times of a diameter of the low pressure refrigerant inflow portion (126) and smaller than 1.1 times thereof.

Abstract: An apparatus and method for controlling an operation of a compressor are disclosed to enhance a compressor efficiency in each operation mode in operating a compressor in a power mode or power saving mode according to an external load. The apparatus for controlling an operation of a compressor, including: a controller that generates a control signal to select an operation mode of the compressor according to an operation load of the compressor; a compressor motor that includes a main coil and a sub-coil and is driven in one of a plurality of operation modes according to a control signal of the controller; and a power supply unit that applies power via capacitors each having a different capacitance to the sub-coil of the compressor motor according to a control signal of the controller.