초록 ▼

A refrigeration compressor incorporating an improved suction muffler is disclosed. The suction muffler provides dual sound attenuating chambers within a single housing, which housing is secured to the suction inlet conduit extending between the motor cover and suction inlet for the compressor. The s

A refrigeration compressor incorporating an improved suction muffler is disclosed. The suction muffler provides dual sound attenuating chambers within a single housing, which housing is secured to the suction inlet conduit extending between the motor cover and suction inlet for the compressor. The suction inlet conduit is increased in diameter between the motor cover and the compressor inlet to provide a stepped portion which operates to reflect pressure waves. Integrally formed openings in the sidewall of the conduit provide communication with each of the two chambers and the respective chambers may be tuned to attenuate different specific frequencies. Internal integrally formed baffles within each of the chambers serve to reduce standing waves within the chambers as well as adding stiffness to the muffler.

대표청구항 ▼

In a refrigeration compressor including: an outer hermetic shell; compressor means within said shell; motor means within said shell and operatively connected to said compressor means for driving same, an improved suction muffler assembly comprising an elongated suction conduit having a first end con

In a refrigeration compressor including: an outer hermetic shell; compressor means within said shell; motor means within said shell and operatively connected to said compressor means for driving same, an improved suction muffler assembly comprising an elongated suction conduit having a first end connected to said compressor means and a second end open to the interior of said shell, said conduit being operative to supply suction gas from the interior of said shell to said compressor means, said conduit having a first internal cross sectional area at said first end and a second internal cross sectional area at said second end, said first cross sectional area being larger than said second cross sectional area, said conduit further including first and second axially spaced openings in the sidewall intermediate the ends thereof, and a pair of generally radially extending axially elongated flanges, each of said flanges including a longitudinally extending rib thereon, a muffler housing secured to said suction conduit in overlying relationship to said pair of axially spaced openings, said muffler housing having a pair of outwardly extending flanges provided thereon, each having an elongated groove adapted to receive one of said ribs, said ribs and said notches cooperating to secure said muffler housing to said conduit, said muffler housing including laterally extending partition means cooperating with said suction conduit to define first and second substantially closed chambers within said muffler housing, said first chamber being in fluid communication with said suction gas flowpath via said first opening and said second chamber being in fluid communication with said suction gas flowpath via said second opening, said first and second chambers being operative to attenuate noise resulting from operation of said compressor means.