Abstract: A communication pipe outlet (263) of a suction muffler (26) included in a hermetic compressor (10) includes a communication opening (264). An upper shape (264a) of the communication opening (264) is a curved protruding shape, and a lower shape (264b) of the communication opening (264) is a rectangular shape. A suction hole (33) of a valve plate (30) included in the hermetic compressor (10) is formed such that the cylinder side of the suction hole (33) has a non-recessed closed-curve shape, and the communication pipe side of the suction hole (33) has a shape similar to that of the communication opening (264). The valve plate (30) and a communication pipe (262) are connected in a state where an upper peripheral surface of the communication opening (264) of the communication pipe outlet (263) corresponds to an upper peripheral surface of the suction hole (33).

Abstract: A compressor driving device includes: a controller that PWM drives a compressor; an inverter circuit unit that supplies power to an electric motor included in the compressor; a drive circuit that drives the inverter circuit unit according to a control signal; a voltage detector that detects a voltage that is output to the electric motor; and a current detector that detects a current that is output to the electric motor. When a product of a detection value of the voltage detector and a detection value of the current detector is greater than a predetermined comparison value, a duty ratio of the control signal is reduced to cause the input power supplied to the electric motor by the inverter circuit unit to have a predetermined input power level or less.

Abstract: A sealed compressor of the present invention comprises an electric component (111); a compression component (113) actuated by the electric component (111); and a sealed container (101) which accommodates therein the electric component (111) and the compression component (113), and stores lubricating oil therein; wherein the compression component (113) includes a crankshaft (135) including a main shaft (137) and an eccentric shaft (139); a cylinder block (117) including a bearing unit (123) supporting the main shaft (137) such that the main shaft is rotatable, and a cylinder (121) defining a compression chamber (119); and a suction muffler (131) through which a refrigerant gas (115) flows from an interior of the sealed container (101) to an interior of the compression chamber (119); a separating wall (165) is provided between the suction muffler (131) and the electric component (111); a first space (159) is formed between the suction muffler (131) and the separating wall (165); and a second space (163) is form