Compressor having noise reducing apparatus

Abstract

In a compressor having a noise reducing apparatus capable of minimizing noise propagated to the outside of a casing, by constructing a bottom cap of a casing as a double wall structure and naturally filling oil inside the casing into the double wall, high frequency noise occurred at the bottom cap side can be efficiently excluded, and accordingly a noise absorption efficiency can be maximized.

1 . A compressor having a noise reducing apparatus, comprising; a sealed casing having a multi-wall structure formed at least at a certain portion thereof and filled with a fluid between walls of the multi-wall.  
     
     
         2 . The compressor of  claim 1 , wherein the fluid filled between the multi-wall is gas.  
     
     
         3 . The compressor of  claim 1 , wherein the fluid filled between the multi-wall is a liquid.  
     
     
         4 . The compressor of  claim 1 , wherein an oil inflow path is formed at the multi-wall to make oil filled in the casing flow between the walls of the multi-wall.  
     
     
         5 . The compressor of  claim 1 , wherein the casing has a multi-wall structure at the bottom surface.  
     
     
         6 . The compressor of  claim 5 , wherein a bulkhead is additionally formed at the bottom surface of the casing to construct a double-wall structure.  
     
     
         7 . The compressor of  claim 6 , wherein an oil inflow path is formed at the bulkhead to make oil filled in the casing flow therein.  
     
     
         8 . The compressor of  claim 1 , wherein a base is positioned at the bottom portion of the casing to construct a multi-wall structure, and a fluid is filled in a space between the casing and the base.  
     
     
         9 . The compressor of  claim 8 , wherein an oil inflow path is formed at the casing to make oil flow in the space between the casing and the base.  
     
     
         10 . The compressor of  claim 1 , wherein the compressor includes an electric motor part placed at the internal upper portion of the casing and generating a rotational force and a compressing part placed at the internal lower portion of the casing, compressing and discharging the fluid by the rotational force generated in the electric motor part.  
     
     
         11 . The compressor of  claim 1 , wherein the compressor includes an electric motor part placed at the internal lower portion of the casing and generating a rotational force and a compressing part placed at the internal upper portion of the casing, compressing and discharging the fluid by the rotational force generated in the electric motor part.  
     
     
         12 . The compressor of  claim 1 , wherein the compressor includes: 
 a compressing part for compressing and discharging the fluid by the rotational force generated in an electric motor part; wherein    the compressing part consists of a cylinder assembly fixed inside the casing and having a suction path and a discharge path, a Z-plate dividing the internal space of the cylinder assembly into plural compressing spaces, sucking, compressing and discharging the fluid while being rotated by the electric motor part, and plural vanes for dividing each compressing space into a suction region and a compression region while performing a reciprocating motion by contacting to the both surfaces of the Z-plate.    
     
     
         13 . A compressor having a noise reducing apparatus, comprising: 
 a sealed casing having a cylindrical body, an upper cap combined with the upper portion of the body, a lower cap combined with the lower portion of the body and a bulkhead placed inside the lower cap to construct a multi-wall with the lower cap.    
     
     
         14 . The compressor of  claim 13 , wherein an oil inflow path is formed at the bulkhead to make the oil inside the casing flow and fill therein.  
     
     
         15 . The compressor of  claim 13 , wherein the bulkhead is supported by the lower cap by projecting plural protrusions.  
     
     
         16 . The compressor of  claim 13 , wherein the circumferential surface of the bulkhead is fixed to the internal wall of the lower cap.  
     
     
         17 . The compressor of  claim 13 , wherein a ratio (t 2 /t 1 ) of a bulkhead thickness (t 2 ) to a casing thickness (t 1 ) is within the range of 0.01˜2.0.  
     
     
         18 . The compressor of  claim 13 , wherein a ratio (d/t 1 ) of a distance (d) between the casing and the bulkhead to a casing thickness (t1) is within the range of 0.0˜3.0.  
     
     
         19 . The compressor of  claim 13 , wherein the circumferential surface of the bulkhead is separated from the lower cap and supported by the lower cap through a supporting rod.  
     
     
         20 . The compressor of  claim 13 , wherein the bulkhead is made of a material different from that of the lower cap.  
     
     
         21 . The compressor of  claim 13 , wherein a space between the lower cap and the bulkhead is in a vacuum state.  
     
     
         22 . The compressor of  claim 13 , wherein a noise reducing member is inserted between the lower cap and the bulkhead.  
     
     
         23 . The compressor of  claim 13 , wherein the lower cap and the bulkhead have a pan structure at which the upper portion is open and are combined each other.  
     
     
         24 . A compressor having a noise reducing apparatus, comprising: 
 a sealed casing having a multi-wall structure at least at a certain portion;    a cylinder assembly placed inside the casing and having a suction path and a discharge path;    a Z-plate dividing the internal space of the cylinder assembly into plural compressing spaces, sucking, compressing and discharging the fluid while being rotating by an electric motor part; and    plural vanes for dividing each compressing space into a suction region and a compression region while performing a reciprocating motion by contacting to the both surfaces of the Z-plate.    
     
     
         25 . The compressor of  claim 24 , wherein a space between multi-wall of the casing is in a vacuum.  
     
     
         26 . The compressor of  claim 24 , wherein a fluid is filled in a space between the multi-wall of the casing.  
     
     
         27 . The compressor of  claim 24 , wherein a noise reducing member is placed between the multi-wall of the casing.  
     
     
         28 . The compressor of  claim 24 , wherein the casing has a multi-wall structure at the bottom portion.  
     
     
         29 . The compressor of  claim 24 , wherein a bulkhead is added to the bottom surface of the casing to construct a double-wall structure.  
     
     
         30 . The compressor of  claim 29 , wherein an oil inflow path is formed at the bulkhead to make the oil inside the casing flow and fill therein.  
     
     
         31 . A compressor having a noise reducing apparatus, comprising: 
 a sealed casing having a multi-wall structure at least a certain portion thereof;    a cylinder assembly placed inside the casing and having a suction path and a discharge path;    a Z-plate dividing the internal space of the cylinder assembly into plural compressing spaces, sucking, compressing and discharging the fluid while being rotating by an electric motor part;    plural vanes for dividing each compressing space into a suction region and a compression region while performing a reciprocating motion by contacting to the both surfaces of the Z-plate; and    a noise insulating means placed inside the casing and insulating noise propagated to the outside of the casing.    
     
     
         32 . The compressor of  claim 31 , wherein the noise insulating means is constructed by forming a multi-wall structure at least at a certain portion of the sealed casing.  
     
     
         33 . In a refrigerator using a refrigerant cycle including a compressor, a condenser, an expansive valve and an evaporator, the compressor comprising: 
 a sealed casing having a multi-wall structure at least at a certain portion thereof and filled with a fluid in a space between walls of the multi-wall.    
     
     
         34 . The refrigerator of  claim 33 , wherein an oil inflow path is formed at the multi-wall to make the oil inside the casing flow and fill in a space between the walls of the multi-wall.  
     
     
         35 . In an air conditioner using a refrigerant cycle including a compressor, a condenser, an expansive valve and an evaporator, the compressor comprising: 
 a sealed casing having a multi-wall structure at least at a certain portion thereof and filled with a fluid in a space between walls of the multi-wall.    
     
     
         36 . The air conditioner of  claim 35 , wherein an oil inflow path is formed at the multi-wall to make the oil inside the casing flow and fill in a space between the Walls of the multi-wall.