Patent ID: 7052248

Claim:
A hermetic compressor comprising: (a) a compression element; (b) a motor element to drive rotatably said compression element; and (c) an enclosed container that encloses said compression element and said motor element, and stores lubrication oil, wherein said compression element includes: (d) a cylinder block including a compression chamber; (e) a valve plate forming a suction valve together with a movable valve to close an opening of said compression chamber of said cylinder block; (f) a head forming a high-pressure chamber, said head being fixed to said cylinder block via said valve plate; and (g) a suction muffler including a muffling space, wherein said suction muffler includes: (h) said muffling space formed of two rooms and a communication space communicating said two rooms; (i) a first communication passage communicating said movable valve with said muffling space and extending into said muffling space to form an opening in said muffling space; and (j) a second communication passage communicating said enclosed container with said muffling space and extending into said muffling space to form an opening to said muffling space, wherein said openings in said muffling space from said first and said second communication passages are disposed in one of said two rooms, and the other room of said two rooms together with said communication space form a resonance muffler having a resonance frequency matching with a cavity resonance frequency of said enclosed container.