Refrigeration system

Abstract

A refrigeration system includes a first refrigerant passage, a π-type silencer, and a second refrigerant passage. The π-type silencer has a first silencing space, a second silencing space, and a communication path. The first silencing space communicates with the first refrigerant passage. The second silencing space is disposed below the first silencing space. The communication path extends from the lower end of the first silencing space to the outside of the first silencing space and communicates with the second silencing space. The second refrigerant passage extends from the lower end of the second silencing space.

1 . A refrigeration system, comprising:
 a first refrigerant passage;   a π-type silencer having
 a first silencing space communicating with the first refrigerant passage, 
 a second silencing space ( 202 ) disposed below the first silencing space, and 
 a communication path extending from a lower end of the first silencing space to an area outside of the first silencing space to communicate the first silencing space with the second silencing space; and 
   a second refrigerant passage extending from a lower end of the second silencing space.   
     
     
         2 . The refrigeration system according to  claim 1 , wherein
 the communication path extends into the second silencing space.   
     
     
         3 . A refrigeration system, comprising:
 a first refrigerant passage;   a π-type silencer having
 a first silencing space communicating with the first refrigerant passage, 
 a second silencing space disposed below the first silencing space, 
 a communication path extending from inside of the first silencing space through a lower end of the first silencing space to an area outside of the first silencing space to communicate the first silencing space with the second silencing space, and 
 an oil return hole disposed in a lower end portion of the communication path inside the first silencing space; and 
   a second refrigerant passage extending from a lower end of the second silencing space.   
     
     
         4 . The refrigeration system according to  claim 3 , wherein
 the communication path extends into the second silencing space.   
     
     
         5 . A refrigeration system, comprising:
 a first refrigerant passage;   a π-type silencer having
 a first silencing space communicating with the first refrigerant passage, 
 a second silencing space disposed side-by-side relative to the first silencing space, and 
 a communication path extending from a lower end of the first silencing space to a lower end of the second silencing space through an area outside of the first silencing space to communicate the first silencing space with the second silencing space; and 
   a second refrigerant passage communicating with the second silencing space.   
     
     
         6 . The refrigeration system according to  claim 5 , wherein
 the first refrigerant passage extends from an upper end of the first silencing space and extends into the first silencing space.   
     
     
         7 . The refrigeration system according to  claim 5 , wherein
 the second refrigerant passage extends from an upper end of the second silencing space and extends into the second silencing space.   
     
     
         8 . The refrigeration system according to  claim 5 , wherein
 the first refrigerant passage extends from an upper end of the first silencing space, and   the second refrigerant passage extends from an upper end of the second silencing space.   
     
     
         9 . The refrigeration system according to  claim 5 , wherein
 the first refrigerant passage extends from the lower end of the first silencing space, and   the second refrigerant passage extends from the lower end of the second silencing space.   
     
     
         10 . The refrigeration system according to  claim 5 , wherein
 the communication path has a mesh member disposed therein.   
     
     
         11 . A refrigeration system, comprising:
 a first refrigerant passage;   a π-type silencer having
 a first silencing space communicating with the first refrigerant passage, 
 a second silencing space disposed side-by-side relative to the first silencing space, and 
 a communication path extending from a lower end of the first silencing space to an upper end of the second silencing space through an area outside of the first silencing space to communicate the first silencing space with the second silencing space; and 
   a second refrigerant passage communicating with the second silencing space.   
     
     
         12 . The refrigeration system according to  claim 11 , wherein
 the second refrigerant passage extends from a lower end of the second silencing space.   
     
     
         13 . A refrigeration system, comprising:
 a first refrigerant passage;   a π-type silencer having
 a first silencing space communicating with the first refrigerant passage, 
 a second silencing space disposed side-by-side relative to the first silencing space, and 
 a communication path extending from inside of the first silencing space through an upper end of the first silencing space to an upper end of the second silencing space to communicate the first silencing space with the second silencing space; and 
   a second refrigerant passage communicating with the second silencing space.   
     
     
         14 . The refrigeration system according to  claim 13 , wherein
 the communication path extends from the upper end of the second silencing space into the second silencing space.   
     
     
         15 . The refrigeration system according to  claim 13 , wherein
 the second refrigerant passage extends from a lower end of the second silencing space.   
     
     
         16 . A refrigeration system, comprising:
 a first refrigerant passage;   a π-type silencer having
 a first silencing space communicating with the first refrigerant passage, 
 a second silencing space disposed side-by-side relative to the first silencing space, and 
 a communication path extending from a side surface of a bottom portion of the first silencing space to a side surface of a bottom portion of the second silencing space to communicate the first silencing space with the second silencing space; and 
   a second refrigerant passage connected to the side surface of the bottom portion of the second silencing space and communicating with the second silencing space.   
     
     
         17 . The refrigeration system according to  claim 16 , wherein
 the communication path extends into the first silencing space and into the second silencing space through the side surfaces of the bottom portions of the first and second silencing spaces, respectively.   
     
     
         18 . The refrigeration system according to  claim 16 , wherein
 the first refrigerant passage is connected to the side surface of the bottom portion of the first silencing space.   
     
     
         19 . A refrigeration system, comprising:
 a first refrigerant passage;   a π-type silencer having
 a first silencing space communicating with the first refrigerant passage, 
 a second silencing space disposed side-by-side relative to the first silencing space, and 
 a communication path extending from a side surface of the first silencing space to a side surface of the second silencing space to communicate the first silencing space with the second silencing space; 
   a second refrigerant passage communicating with the second silencing space;   a first oil drain passage extending from a lower end of the first silencing space; and   a second oil drain passage extending from a lower end of the second silencing space.   
     
     
         20 . The refrigeration system according to  claim 19 , wherein
 the second oil drain passage merges with the first oil drain passage.