| 摘要 |
PURPOSE: Discharge noise reducing structure of a hermetic rotary compressor is provided to use a compressor without noise by reducing noise of 4kHz effectively in a process of discharging refrigerant gas. CONSTITUTION: To reduce discharge noise in a process of discharging compressed refrigerant gas to a discharge port(20), a first and a second resonance grooves(30,40) are connected each other. Herein, the second resonance groove has depth and diameter larger than one of the first groove. Compressed high-temperature high-pressure refrigerant gas is discharged out of a cylinder(15) through the discharge port, a discharge hole of a main bearing and a suction muffler. Discharge noise of 4kHz of the refrigerant gas is reduced efficiently by the discharge port and the two resonance grooves. The discharge noise is guided to the second resonance groove having depth and diameter larger than one of the first groove.
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