Compressor muffling arrangement

In a refrigerant compressor including outer housing means, compression mechanism within the outer housing means, and an oil sump within the outer housing means, the improvement comprising discharge gas muffling means formed within the outer housing means, such discharge gas muffling means comprising a part of the outer housing means, first wall means, and second wall means cooperating therewith to provide first and second chambers in the discharge gas muffling means, an inlet port in the second wall means for communicating the compression mechanism with the first chamber for receiving discharge gas from the compression mechanism, said first chamber communicating with said second chamber, and a discharge port from said second chamber adapted to communicate to a discharge line, and divider wall means in said first chamber and said second chamber having restricted openings therein for providing a plurality of muffling regions in said first and second chambers, a restricted opening in said first wall means communicating one muffling region in the second chamber with a muffling region in the first chamber, the oil sump defined within the compressor by the outer housing means and the second wall means, whereby discharge gas will pass from the inlet port through a plurality of restricted openings and expansion chamber muffling regions and will be discharged from the discharge port.