| 摘要 |
PROBLEM TO BE SOLVED: To obtain a hermetic rotary compressor which is highly efficient and causes a low noise by reducing a deformation of a cylinder blockage surface which is generated by fixing a discharging muffler. SOLUTION: The hermetic rotary compressor is provided, inside the hermetic cylinder 1, with an electrically driven device 2; a rolling piston 9; a cylinder 4 to house the rolling piston 9; an upper and lower bearings 5, 6 which are fixed to the cylinder 4 and which have a flange part composing a compressive chamber 14 by blocking the upper and lower end plane of the cylinder 4, and a cylindrical part supporting a revolving shaft 3 to transmit an output of the electrically driven device 2; and the discharging muffler 10 fixed in the lower bearing 6 which reduces discharging sound of a cooling medium gas while covering the opposite side with empty space against the compressive chamber side surface of the lower bearing 6. The outer periphery of the discharging muffler 10 is formed in the flat step part 10a and the flat step part 10a is pressed and contacted to the flange part 6A outer peripheral lower surface of the lower bearing 6 and the discharging muffler 10 is pressed and contacted through the ring-like elastic member 11 to the cylindrical part 6B lower end surface of the lower bearing 6. COPYRIGHT: (C)2008,JPO&INPIT
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