Compression system and clothing treating apparatus comprising same

Abstract

Provided is a compression system including, in order to minimize an amount of oil mixed with a supplied refrigerant, a compressor configured to compress and discharge the refrigerant, a plurality of oil separators configured to separate the oil included in the refrigerant discharged from the compressor, and a refrigerant pipe configured to connect the compressor and the plurality of oil separators to form a travelling path of the refrigerant, and the plurality of oil separators are connected in series along the travelling path of the refrigerant.

1 . A compression system comprising:
 a compressor configured to compress and discharge a refrigerant;   a plurality of oil separators configured to separate oil included in the refrigerant discharged from the compressor; and   a refrigerant pipe configured to connect the compressor and the plurality of oil separators to form a travelling path of the refrigerant,   wherein the plurality of oil separators are connected in series along the travelling path of the refrigerant.   
     
     
         2 . The compression system of  claim 1 , further comprising:
 a connection pipe in which the oil is to flow between each of the plurality of oil separators; and   a recovery pipe for recovering the oil from the plurality of oil separators to the compressor,   wherein the plurality of oil separators includes a first oil separator provided closest to the compressor on the travelling path of the refrigerant and a second oil separator provided next to the first oil separator,   the connection pipe connects the first oil separator and the second oil separator, and   the recovery pipe connects the first oil separator and the compressor.   
     
     
         3 . The compression system of  claim 2 , wherein the connection pipe comprises a first flow resistance body configured to provide resistance to a flow of the oil. 
     
     
         4 . The compression system of  claim 3 , wherein the first flow resistance body is formed in a capillary structure on the connection pipe. 
     
     
         5 . The compression system of  claim 2 , wherein the recovery pipe comprises a second flow resistance body configured to provide resistance to a flow of the oil. 
     
     
         6 . The compression system of  claim 5 , wherein the second flow resistance body is formed in a capillary structure on the recovery pipe. 
     
     
         7 . The compression system of  claim 2 , wherein the connection pipe comprises a first flow resistance body configured to provide resistance to a flow of the oil,
 the recovery pipe comprises a second flow resistance body configured to provide resistance to the flow of the oil, and   flow resistance of the second flow resistance body is less than flow resistance of the first flow resistance body.   
     
     
         8 . The compression system of  claim 7 , wherein the first flow resistance body and the second flow resistance body are formed in a capillary structure, and
 a length of the second flow resistance body is formed to be shorter than a length of the first flow resistance body.   
     
     
         9 . The compression system of  claim 7 , wherein the first flow resistance body and the second flow resistance body are formed in a capillary structure, and
 a flow path cross-sectional area of the second flow resistance body is formed to be wider than a flow path cross-sectional area of the first flow resistance body.   
     
     
         10 . A clothing treating apparatus comprising:
 a washing unit that is supplied with a refrigerant and performs washing of laundry:
 a distillation unit comprising a shell forming, inside the shell, a distillation space for receiving the refrigerant which is discharged from the washing unit and comprising a heater positioned inside the shell to heat the refrigerant received in the distillation space: 
   a compression system for compressing the refrigerant which is distilled in the distillation space and supplying the refrigerant to the heater;   a freezing unit that freezes the refrigerant which is discharged from the heater; and   a storage unit that stores the refrigerant which is liquefied by the freezing unit,   wherein the compression system comprises:   a compressor configured to compress and discharge the refrigerant:   a plurality of oil separators configured to separate oil included in the refrigerant discharged from the compressor: and   a refrigerant pipe configured to connect the compressor and the plurality of oil separators to form a travelling path of the refrigerant, and   the plurality of oil separators are connected in series along the travelling path of the refrigerant.   
     
     
         11 . The clothing treating apparatus of  claim 10 , further comprising:
 a connection pipe in which the oil is to flow between each of the plurality of oil separators: and   a recovery pipe for recovering the oil from the plurality of oil separators to the compressor,   wherein the plurality of oil separators includes a first oil separator provided closest to the compressor on the travelling path of the refrigerant and a second oil separator provided next to the first oil separator,   the connection pipe connects the first oil separator and the second oil separator, and   the recovery pipe connects the first oil separator and the compressor.   
     
     
         12 . The clothing treating apparatus of  claim 11 , wherein the connection pipe comprises a first flow resistance body configured to provide resistance to a flow of the oil,
 the recovery pipe comprises a second flow resistance body configured to provide resistance to the flow of the oil, and   flow resistance of the second flow resistance body is less than flow resistance of the first flow resistance body.   
     
     
         13 . The clothing treating apparatus of  claim 12 , wherein the first flow resistance body and the second flow resistance body are formed in a capillary structure. 
     
     
         14 . The clothing treating apparatus of  claim 13 , wherein a length of the second flow resistance body is formed to be shorter than a length of the first flow resistance body.