Scroll compressor

A scroll compressor, comprising:

• a casing having an inner space divided into an oil storage space that contains oil, and a mixture space that contains a refrigerant and oil in a mixed state, the casing including a suction pipe through which the refrigerant is suctioned into the casing and a discharge pipe through which the refrigerant is discharged;
• a motor including a stator provided in the mixture space of the casing, including a rotor rotatably provided in the stator with an air gap defined therebetween which forms a first passage;
• a compression device provided below the motor, and configured to compress the refrigerant by a drive force transmitted from the motor;
• a rotational shaft configured to transmit the drive force of the motor to the compression device by connecting the motor and the compression device with each other;
• an oil separator configured to separate oil from refrigerant at the mixture space;
• and
• an oil guide having a first end connected to the oil separator, and a second end that communicates with the oil storage space and configured to guide the oil separated by the oil separator to the oil storage space, wherein the oil separator includes:
• an oil separation container disposed in the mixture space above and separated from the motor, the oil separation container having a predetermined oil separation space, wherein one end of the oil guide communicates with the oil separator container;
• and
• a communication pipe provided at one lateral side of the oil separation container, wherein the communication pipe is configured to provide communication between the oil separation space and the mixture space, wherein the oil guide includes an oil collection pipe having a first end connected directly to the oil separation container, wherein one end of a refrigerant discharge pipe that penetrates the casing communicates with an upper surface of the oil separation container, wherein the scroll compressor further includes a passage separator including a wall provided between the motor and the compression device, wherein the passage separator is configured to separate a refrigerant passage and an oil passage from each other, wherein a lengthwise center line of a horizontally-extending end of the communication pipe forms a predetermined angle with the rotational shaft in an axial direction, wherein a lengthwise center line of the refrigerant discharge pipe forms a predetermined angle with the lengthwise center line of the horizontally-extending end of the communication pipe, and wherein the lengthwise center line at the horizontally extending end of the communication pipe forms a predetermined angle in a horizontally-extending plane with a virtual line that extends normal to a center axis of the oil separation container.

A scroll compressor, comprising:

• a casing having an inner space, the casing including a suction pipe through which a refrigerant is suctioned into the casing and a discharge pipe through which the refrigerant is discharged;
• a motor provided in the inner space, having a stator coupled to the casing, a rotor rotatably provided in the stator, and an oil collection passage between an outer circumferential surface of the stator and an inner circumferential surface of the casing;
• a compression device provided below the motor, and having a discharge opening through which the refrigerant compressed therein is discharged to the inner space of the casing;
• a rotational shaft configured to transmit a drive force to the compression device from the motor;
• and
• an oil guide configured to forcibly collect oil separated at an upper space of the motor, using the rotational shaft, wherein an oil separator is provided at the upper space of the motor, wherein the oil separator is configured to separate oil from a refrigerant which moves to the upper space and to forcibly collect the separated oil by the oil guide, wherein the oil separator includes:
• an oil separation container disposed in the inner space above and separated from the motor, the oil separation container having a predetermined oil separation space, wherein one end of the oil guide communicates with the oil separator container;
• and
• a communication pipe provided at one lateral side of the oil separation container, wherein the communication pipe is configured to provide communication between the oil separation space and the upper space, wherein the oil guide includes an oil collection pipe having a first end connected directly to the oil separation container, wherein one end of a refrigerant discharge pipe that penetrates the casing communicates with an upper surface of the oil separation container, wherein an oil pump is provided at the compression device, such that oil collected by the oil guide is guided to an oil supply passage formed in the rotational shaft, wherein the first end of the oil collection pipe is connected directly to the oil separation container and a second end of the oil collection pipe is connected directly to an inlet of the oil pump, wherein a lengthwise center line of a horizontally-extending end of the communication pipe forms a predetermined angle with the rotational shaft in an axial direction, wherein a lengthwise center line of the refrigerant discharge pipe forms a predetermined angle in a horizontally-extending plane with the lengthwise center line of the horizontally-extending end of the communication pipe, and wherein the lengthwise center line at the horizontally-extending end of the communication pipe forms a predetermined angle in a horizontally-extending plane with a virtual line that extends normal to a center axis of the oil separation container.