Fixed scroll of scroll compressor

Abstract

Disclosed herein is a scroll compressor, and more particularly, a fixed scroll of the scroll compressor which can allow part of gaseous refrigerant to be smoothly introduced into a compression chamber while preventing introduction of the remaining gaseous refrigerant that is heated in the compressor. The fixed scroll includes a scroll body having an involuted wrap to define a compression chamber therein and provided, around a lower end thereof, with a mounting flange to be arranged on an upper surface of a main frame, and an interceptive suction portion configured to guide part of the gaseous refrigerant, that is directed upward along the main frame, into the compression chamber while preventing introduction of the remaining gaseous refrigerant that is circulated around the scroll body.

1 . A fixed scroll of a scroll compressor comprising: 
 a scroll body having an involuted wrap to define a compression chamber therein;    a mounting flange formed along an outer circumference of a lower end of the scroll body; and    an interceptive suction portion formed at one side of the mounting flange and adapted to guide gaseous refrigerant, that is directed upward along a main frame, into the compression chamber.    
   
   
       2 . The fixed scroll as set forth in  claim 1 , wherein the interceptive suction portion includes a barrier and a suction passage formed by cutting out part of a lower portion of the mounting flange, the suction passage communicating with the compression chamber defined in the scroll body.  
   
   
       3 . The fixed scroll as set forth in  claim 2 , wherein one side of the suction passage forms a first inclined surface that is successively extended from a distal end of the wrap by a predetermined inclination to guide the gaseous refrigerant into the compression chamber through the suction passage.  
   
   
       4 . The fixed scroll as set forth in  claim 3 , wherein the other side of the suction passage forms a second inclined surface that is inclined relative to the wrap by a predetermined inclination to guide the gaseous refrigerant into the compression chamber through the suction passage.  
   
   
       5 . A compression unit of a scroll compressor comprising: 
 a fixed scroll having an involuted wrap to define a compression chamber therein;    an orbiting scroll configured to be engaged with the fixed scroll to allow gaseous refrigerant, introduced into the compression chamber, to be compressed in accordance with an orbiting motion of the orbiting scroll;    a mounting flange formed around a lower end of the fixed scroll to be arranged on an upper surface of a main frame; and    an interceptive suction portion formed at the fixed scroll to guide the gaseous refrigerant, that is upwardly directed along the main frame, into the compression chamber.    
   
   
       6 . The compression unit as set forth in  claim 5 , wherein a suction baffle is formed at one side of the main frame to allow the suctioned gaseous refrigerant to strike the suction baffle to thereby be partially directed into the compression chamber.  
   
   
       7 . The compression unit as set forth in  claim 6 , wherein the suction baffle, having a concave shape, extends to the interceptive suction portion.  
   
   
       8 . The compression unit as set forth in  claim 5 , wherein the interceptive suction portion includes a barrier and a suction passage formed by cutting out part of a lower portion of the mounting flange, the suction passage communicating with the compression chamber.  
   
   
       9 . The compression unit as set forth in  claim 8 , wherein one side of the suction passage forms a first inclined surface that is successively extended from a distal end of the wrap by a predetermined inclination to guide the gaseous refrigerant into the compression chamber through the suction passage.  
   
   
       10 . The compression unit as set forth in  claim 9 , wherein the other side of the suction passage forms a second inclined surface that is inclined relative to the wrap by a predetermined inclination to guide the gaseous refrigerant into the compression chamber through the suction passage.  
   
   
       11 . A scroll compressor comprising: 
 a sealed shell provided with a suction pipe and a discharge pipe;    a crankshaft arranged in the shell while being supported by main and sub frames;    a compression unit coupled to the crankshaft and adapted to compress gaseous refrigerant that is suctioned via the suction pipe; and    an interceptive suction portion formed at the compression unit to allow the suctioned gaseous refrigerant to strike a suction baffle formed at the main frame to thereby be partially introduced into a compression chamber defined in the compression unit.    
   
   
       12 . The scroll compressor as set forth in  claim 11 , wherein the compression unit includes: 
 a fixed scroll having an involuted wrap to define the compression chamber therein;    an orbiting scroll configured to be engaged with the fixed scroll to allow the gaseous refrigerant, introduced into the compression chamber, to be compressed in accordance with an orbiting motion of the orbiting scroll; and    a mounting flange formed around a lower end of the fixed scroll to be arranged on an upper surface of the main frame.    
   
   
       13 . The scroll compressor as set forth in  claim 11 , wherein the suction baffle, having a concave shape, extends to the interceptive suction portion.  
   
   
       14 . The scroll compressor as set forth in  claim 12 , wherein the interceptive suction portion includes a barrier and a suction passage formed by cutting out part of a lower portion of the mounting flange, the suction passage communicating with the compression chamber.  
   
   
       15 . The scroll compressor as set forth in  claim 14 , wherein one side of the suction passage forms a first inclined surface that is successively extended from a distal end of the wrap by a predetermined inclination to guide the gaseous refrigerant into the compression chamber through the suction passage.  
   
   
       16 . The scroll compressor as set forth in  claim 15 , wherein the other side of the suction passage forms a second inclined surface that is inclined relative to the wrap by a predetermined inclination to guide the gaseous refrigerant into the compression chamber through the suction passage.