Loading patent…
AssigneeSanyo Electric Co., Ltd.
InventorsHiroyuki Sawabe, Yoshiaki Hiruma, Hiroyuki Yoshida
Estimating the term…
In fixing structure and method for fixing an upper cup muffler (7) to an upper bearing portion (6) for sealing the opening of an upper cylinder (3) in a hermetically sealed compressor, the upper bearing portion (6) includes a step portion having an upper surface, a lower surface (6C) and a side surface (6B) between the upper and lower surfaces, the peripheral edge portion between the upper and side surfaces of the upper bearing portion is declined outwardly to have a slant surface (6A), and the upper cup muffler (7) includes a bottom surface (7C) and a peripheral side surface lower portion (7D) that extends downwardly from the edge portion of the bottom surface (7c) of the upper cup muffler (7). The peripheral side surface lower portion (7D) gets across the slant surface (6A) of the upper bearing portion and is brought into linear or planar contact with at least one of the outer side surface (6B) and the lower surface (6C) of the step portion when the bottom surface (7C) of the upper cup muffler (7) and the upper surface of the upper bearing portion (6) are fixed to each other by fastening a bolt, thereby sealing the upper bearing portion.
A fixing structure for fixing an upper cup muffler having an upper surface opening and a lower surface opening and covering a discharge valve provided to an upper bearing portion for sealing the opening of an upper cylinder in a hermetically sealed compressor that is equipped with an electrically-driven element provided at the upper portion of a hermetically sealed container and a rotationally compressing element driven by a rotating shaft of the electrically-driven element and provided at the lower portion of the hermetically sealed container, wherein the upper bearing portion includes a step portion having an upper surface, a lower surface and a side surface between the upper and lower surfaces, the peripheral edge portion between the upper and side surfaces of the upper bearing portion is declined outwardly to have a slant surface, and the upper cup muffler includes a bottom surface and a peripheral side surface lower portion that extends downwardly from the edge portion of the bottom surface of the upper cup muffler and forms the lower surface opening, and the peripheral side surface lower portion gets across the slant surface of the upper bearing portion and is brought into linear or planar contact with at least one of the outer side surface and the lower surface of the step portion when the bottom surface of the upper cup muffler and the upper surface of the upper bearing portion are fixed to each other by fastening a bolt, thereby sealing the upper bearing portion.
A fixing method for fixing an upper cup muffler having an upper surface opening and a lower surface opening and covering a discharge valve provided to an upper bearing portion for sealing the opening of an upper cylinder in a hermetically sealed compressor that is equipped with an electrically-driven element provided at the upper portion of a hermetically sealed container and a rotationally compressing element driven by a rotating shaft of the electrically-driven element and provided at the lower portion of the hermetically sealed container, the upper cup muffler including a bottom surface and a peripheral side surface lower portion that extends downwardly from the edge portion of the bottom surface of the upper cup muffler and forms the lower surface opening, and the upper bearing portion including a step portion having an upper surface, a lower surface and a side surface between the upper and lower surfaces, comprising steps of:
Dependencies are inferred from the claim text.