Discharge muffling chamber for refrigeration compressors and process for closing a discharge muffling chamber

A process for closing a discharge muffling chamber, for a refrigeration compressor of the type which comprises:

• a case lodging a crankcase carrying at least one discharge muffling chamber of tubular shape and having a closed bottom end wall presenting a threaded blind axial hole, a surrounding lateral wall, and an open end, presenting an annular seat;
• an annular sealing gasket seated on said annular seat;
• a cover provided with a median hole and seated on the sealing gasket;
• and a fixation bolt having a head seated on the cover, a rod projecting from the head and ending in a threaded end which is affixed in the interior of said blind axial hole, characterized in that it comprises the steps of:
• forming the discharge muffling chamber, with its annular seat extending throughout the whole radial width of the surrounding lateral wall of the discharge muffling chamber in the region of its open end.
• fitting the cover, through its median hole, around the rod of the fixation bolt;
• providing a sealing gasket with a peripheral annular portion and with a median hole, and fitting the sealing gasket, through its median hole, around the rod of the fixation bolt, already carrying the cover;
• mounting the assembly consisting of the fixation bolt, cover, and sealing gasket in the discharge muffling chamber, seating the peripheral annular portion of the sealing gasket against the annular seat, and affixing the end of the fixation bolt in the blind axial hole, in order to press the cover against the sealing gasket, closing the open end of the discharge muffling chamber.