Compressor

Abstract

A compressor may include: a lower and upper cylinder each including: a compression chamber configured so that a refrigerant is compressed in the compression chamber and the compressed refrigerant is discharged from the compression chamber, a lower muffler on a lower side of the lower cylinder, and configured to receive, and reduce noise of, the refrigerant discharged from the lower cylinder and discharge the refrigerant to an accommodation space, and a separation muffler in an upper side of the upper cylinder, and configured to receive, and reduce noise of, the refrigerant discharged from the upper cylinder to the accommodation space, wherein the separation muffler is divided from a flow path along which refrigerant from the lower muffler is discharged so that, before reaching the accommodation space, the refrigerant discharged from the lower muffler is divided from the refrigerant discharged from the separation muffler.

1 . A compressor comprising:
 a lower cylinder including a lower compression chamber, the lower compression chamber configured so that refrigerant is compressed in the lower compression chamber, and the compressed refrigerant in the lower compression chamber is discharged from the lower compression chamber;   an upper cylinder including an upper compression chamber, the upper compression chamber configured so that refrigerant is compressed in the upper compression chamber, and the compressed refrigerant in the upper compression chamber is discharged from the upper compression chamber;   a lower muffler on a lower side of the lower compression chamber, and configured to receive, and reduce noise of, the refrigerant discharged from the lower compression chamber and discharge the refrigerant received from the lower compression chamber and having the reduced noise to an accommodation space of the compressor; and   a separation muffler on an upper side of the upper compression chamber, and configured to receive, and reduce noise of, the refrigerant discharged from the upper compression chamber and discharge the refrigerant received from the upper compression chamber and having the reduced noise to the accommodation space,   wherein the separation muffler is divided from a flow path extending upward from the lower muffler and along which refrigerant from the lower muffler is discharged so that, before reaching the accommodation space, the refrigerant discharged from the lower muffler travels along the flow path and is divided from the refrigerant discharged from the separation muffler.   
     
     
         2 . The compressor of  claim 1 , further comprising a connection muffler connected to an inside of the lower muffler and divided from the separation muffler. 
     
     
         3 . The compressor of  claim 2 , wherein
 the separation muffler includes a first discharge hole through which the refrigerant from the separation muffler is discharged to the accommodation space,   the connection muffler includes a second discharge hole through which the refrigerant from the connection muffler is discharged to the accommodation space, and   the flow path extends from the lower muffler through an inside of the connection muffler to the second discharge hole.   
     
     
         4 . The compressor of  claim 3 , further comprising:
 a rotatable shaft;   a lower roller inside the lower compression chamber and configured to be rotated by rotation of the rotatable shaft to compress the refrigerant in the lower compression chamber, and discharge the refrigerant compressed in the lower compression chamber; and   an upper roller inside the upper compression chamber and configured to be rotated by rotation of the rotatable shaft to compress the refrigerant in the upper compression chamber, and discharge the refrigerant compressed in the upper compression chamber,   wherein a distance between the rotatable shaft and the first discharge hole is shorter than a distance between the rotatable shaft and the second discharge hole.   
     
     
         5 . The compressor of  claim 3 , further comprising:
 a rotatable shaft;   a lower roller inside the lower compression chamber and configured to be rotated by rotation of the rotatable shaft to compress the refrigerant in the lower compression chamber, and discharge the refrigerant compressed in the lower compression chamber; and   an upper roller inside the upper compression chamber and configured to be rotated by rotation of the rotatable shaft to compress the refrigerant in the upper compression chamber, and discharge the refrigerant compressed in the upper compression chamber,   wherein a distance between the rotatable shaft and the first discharge hole is longer than a distance between the rotatable shaft and the second discharge hole.   
     
     
         6 . The compressor of  claim 3 , wherein
 the first discharge hole is configured so that the refrigerant from the separation muffler is discharged upward, and   the second discharge hole is configured so that the refrigerant from the connection muffler upward.   
     
     
         7 . The compressor of  claim 3 , wherein
 the first discharge hole is configured so that the refrigerant from the separation muffler is discharged in a horizontal direction or in a first direction inclined at a first predetermined angle with respect to the horizontal direction, and   the second discharge hole is configured so that the refrigerant from the connection muffler is discharged in the horizontal direction or in a second direction inclined at a second predetermined angle with respect to the horizontal direction.   
     
     
         8 . The compressor of  claim 3 , further comprising:
 a connection hole through which the refrigerant from the lower muffler travels along the flow path from the lower muffler to the connection muffler, and   the connection hole and the second discharge hole are spaced apart in a horizontal direction.   
     
     
         9 . The compressor of  claim 2 , wherein the flow path extends through an area between the separation muffler and the connection muffler. 
     
     
         10 . The compressor of  claim 2 , wherein the separation muffler and the connection muffler are coupled to each other. 
     
     
         11 . The compressor of  claim 1 , further comprising:
 an upper cylinder cover on an upper side of the upper cylinder and having an upper inlet hole through which the refrigerant compressed in the upper compression chamber is discharged to the separation muffler,   wherein the separation muffler includes a discharge hole through which the refrigerant received from the upper compression chamber and having the reduced noise is discharged to the accommodation space, and   the upper inlet hole and the discharge hole are spaced apart in a horizontal direction.   
     
     
         12 . The compressor of  claim 1 , further comprising: an outlet pipe through which the flow path extends and configured to discharge the refrigerant from the lower muffler upward. 
     
     
         13 . The compressor of  claim 12 , further comprising:
 an upper cylinder cover on an upper side of the upper compression chamber and including an upper cover hole,   wherein the outlet pipe extends upward from the upper cover hole.   
     
     
         14 . The compressor of  claim 12 , wherein the outlet pipe passes through the separation muffler. 
     
     
         15 . The compressor of  claim 1 , wherein
 the accommodation space is on an upper side of the separation muffler,   the separation muffler includes a discharge hole through which the refrigerant received from the upper compression chamber and having the reduced noise is discharged to the accommodation space, and   the refrigerant discharged through the discharge hole and the refrigerant discharged from the lower muffler along the flow path are mixed in the accommodation space.