Compressor

Abstract

A compressor having a structure for reducing vibration and noise from an internal structure is disposed. The compressor includes a sealed case, an internal structure having a driving part disposed in the sealed case for generating a driving force to compress a fluid, and a compressing part disposed in the sealed case for compressing the fluid, and a weight attached to the sealed case having a predetermined mass to reduce vibration and noise generated by the internal structure. Since there is no need to newly manufacture the sealed case or to add an absorber for the purpose of reducing vibration and noise from an already assembled compressor, time and costs are also saved.

1 . A compressor comprising: 
 a sealed case forming an internal structure, the internal structure comprising a driving part disposed in the sealed case adapted to generating a driving force for compressing a fluid, and a compressing part adapted to compressing the fluid; and    a weight attached to the sealed case and having a predetermined mass, wherein the weight reduces vibration and noise generated by the internal structure.    
   
   
       2 . The compressor according to  claim 1 , wherein the weight has a predetermined area and is attached to an inner surface of a lower side of the sealed case.  
   
   
       3 . The compressor according to  claim 1 , wherein the weight has a predetermined area and is attached to an outer surface of a lower side of the sealed case.  
   
   
       4 . The compressor according to  claim 1 , wherein a portion of the weight is welded to the sealed case by spot welding.  
   
   
       5 . The compressor according to  claim 1 , wherein the weight is used when the compressor is rotated at a high rotation speed faster than 2,800 RPM so that vibration and noise are reduced.  
   
   
       6 . A compressor comprising: 
 a sealed case forming an internal structure, the internal structure comprising a driving part disposed in the sealed case adapted to generating a driving force for compressing a fluid, and a compressing part adapted to compressing the fluid; and    a weight attached to the sealed case and having a predetermined mass for reducing vibration and noise generated by the internal structure, the weight comprising:    a neck portion extending from a contacting portion contacting the sealed case, wherein the neck portion is bent; and    a free end portion formed by bending the neck portion and spaced apart from the sealed case.    
   
   
       7 . The compressor according to  claim 6 , wherein the weight has a predetermined area and is attached to the inner surface of a lower side of the sealed case.  
   
   
       8 . The compressor according to  claim 6 , wherein the weight has a predetermined area and is attached to an outer surface of a lower side of the sealed case.  
   
   
       9 . The compressor according to  claim 6 , further comprising a spring disposed proximate the neck potion.  
   
   
       10 . The compressor according to  claim 6 , wherein a portion of the weight is welded to the sealed case by spot welding.  
   
   
       11 . The compressor according to  claim 6 , wherein the weight is used when the compressor is rotated at a high rotation speed faster than 2,800 RPM so that vibration and noise are reduced.  
   
   
       12 . The compressor according to  claim 6 , wherein the neck portion is thinner than the free end portion.  
   
   
       13 . A compressor comprising: 
 a sealed case;    an internal structure having at least a driving part disposed in the sealed case to generate a driving force to compress a fluid, and a compressing part for compressing the fluid; and    a weight attached to the sealed case and having a predetermined mass, wherein the weight reduces vibration and noise generated by the internal structure, and wherein the weight comprises:    a neck portion extending from a contacting portion contacting the sealed case, wherein the neck portion is bent; and    a free end portion formed by bending the neck portion, wherein the free portion is spaced apart from the sealed case, wherein the free end portion is bent and a part thereof is welded to the sealed case.    
   
   
       14 . The compressor according to  claim 13 , wherein the weight has a predetermined area and is attached to an inner surface of a lower side of the sealed case.  
   
   
       15 . The compressor according to  claim 13 , wherein the weight has a predetermined area and is attached to an outer surface of a lower side of the sealed case.  
   
   
       16 . The compressor according to  claim 13 , further comprising a spring disposed proximate the neck portion.  
   
   
       17 . The compressor according to  claim 13 , wherein the contacting portion of the weight is welded to the sealed case by spot welding.  
   
   
       18 . The compressor according to  claim 13 , wherein the weight is used when the compressor is rotated at a high rotation speed faster than 2,800 RPM so that vibration and noise are reduced.  
   
   
       19 . The compressor according to  claim 13 , wherein the neck portion is thinner than the free end portion.