Reciprocating compressor

Abstract

A reciprocating compressor is disclosed which has a valve construction using plural discharge ports, plural reed valves and plural valve backers to lower the discharge resistance and improve the compression efficiency. The reciprocating compressor ( 1000 ) has within a closed vessel ( 900 ) a reciprocating compressing section ( 300 ) for compressing a required fluid, the reciprocating compressing section ( 300 ) comprising a discharge unit for discharging the fluid and a valve assembly ( 500 ) for opening and closing the discharge unit, with a plurality of discharge ports ( 522 A, 522 B) being formed in the valve assembly, the valve assembly ( 500 ) comprising valve members ( 560 ), the valve members ( 560 ) comprising reed valves ( 530 A, 530 B) disposed correspondingly to the discharge ports ( 522 A, 522 B) and valve backers ( 540 A, 540 B) disposed respectively on back sides of the reed valves, a valve seat ( 520 ) having a recess for receiving the valve members therein, and valve members fixing means for urging end sides of the valve members to fix the valve members elastically to fixing portions ( 523 A, 523 B) of the recess.

1 . A reciprocating compressor having within a closed vessel a reciprocating compressing section for compressing a required fluid, 
 said reciprocating compressing section comprising a discharge unit for discharging said fluid and a valve assembly for opening and closing said discharge unit, with a plurality of discharge ports being formed in said valve assembly,    said valve assembly comprising valve members, said valve members comprising reed valves disposed correspondingly to said discharge ports and valve backers disposed respectively on back sides of said reed valves, a valve seat having a recess for receiving said valve members therein, and valve members fixing means for urging end sides of said valve members to fix said valve members elastically to fixing portions of said recess.    
   
   
       2 . The reciprocating compressor according to  claim 1 , wherein: 
 said reed valves are each formed in a shape comprising fulcrum portions projecting to both sides in the associated one of said fixing portions, an intermediate portion projecting in a perpendicular or oblique direction with respect to a line joining said fulcrum portions, and a lid portion for closing the associated one of said discharge ports, said lid portion lying on the side opposite to said fulcrum portions with respect to said intermediate portion, said fulcrum portions, said intermediate portion and said lid portion being integral with one another, and    said valve backers are each formed in a shape comprising the same fulcrum portions as those of each said reed valve, an intermediate portion having a gradually narrowing portion projecting in an oblique direction with respect to a line joining said fulcrum portions, and an opposite end portion narrower than said lid portion of each said reed valve, said fulcrum portions, said intermediate portion and said opposite end portion being integral with one another.    
   
   
       3 . The reciprocating compressor according to  claim 2 , wherein said reed valves are disposed in such a manner that said lid portions of said reed valves are positioned centrally and said fulcrum portions of one of said reed valves and said fulcrum portions of the other reed valve are positioned outside said lid portions, and said valve backers are disposed in such a manner that said intermediate portions of said valve backers are positioned in directions different from each other with respect to said line joining said fulcrum portions.  
   
   
       4 . The reciprocating compressor according to  claim 2 , wherein said valve members fixing means is formed in a shape comprising fixing portions for fixing said fulcrum portions of said valve members to said fixing portions of said recess and a spring portion for connecting said fixing portions of said valve members fixing means with each other and for urging said fulcrum portions of said valve members elastically to said fixing portions of said recess, said fixing portions and said spring portion being integral with each other.  
   
   
       5 . The reciprocating compressor according to  claim 3 , wherein said valve members fixing means is formed in a shape comprising fixing portions for fixing said fulcrum portions of said valve members to said fixing portions of said recess and a spring portion for connecting said fixing portions of said valve members fixing means with each other and for urging said fulcrum portions of said valve members elastically to said fixing portions of said recess, said fixing portions and said spring portion being integral with each other.