Reciprocating Compressor Provided with Suction Valves Arrangement

Abstract

The present invention relates to a reciprocating compressor able to operate with two separate pressure suction lines provided with a suction valves arrangement and, more particularly, to a suction valves arrangement whose suction valves have different thicknesses. In particular, at least one semi-commanded suction valve has a thickness greater than the thickness of at least one automatic suction valve. The present invention belongs to the field of fluid compressors.

1 . Reciprocating compressor provided with a suction valves arrangement comprising:
 at least one compression cylinder at least one valve plate arranged on one of the ends of the compression cylinder and at least one suction valves arrangement comprised of at least one vane-type automatic suction valve having at least one movable portion able to interact with at least one suction orifice, at least one vane-type semi-commanded suction valve, having at least one movable portion able to interact with the least one suction orifice and at least one solenoid comprised of at least one electrical conductor winding and at least one support structure;   the movable portion of the automatic suction valve being moved depending on the strength of the refrigerant fluid flow of the reciprocating compressor;   the movable portion of the semi-commanded suction valve being moved depending on the attraction force generated by the solenoid and depending on the strength of the refrigerant fluid flow of the reciprocating compressor;   the arrangement of suction valves for reciprocating compressor being especially CHARACTERIZED in that:   the at least one semi-commanded suction valve has a thickness greater than the thickness of at least one automatic suction valve;   the at least one automatic suction valve and the at least one semi-commanded suction valve are defined on different metal foils;   wherein the metal foil in which the at least one automatic suction valve is defined presents a window which comprises an area of passage to the semi-commanded suction valve.   
     
     
         2 . Reciprocating compressor provided with a suction valves arrangement according to  claim 1 , CHARACTERIZED in that the ratio between the thickness of the semi-commanded suction valve and the thickness of the automatic suction valve is from 1.1:1 to 3:1. 
     
     
         3 . Reciprocating compressor provided with a suction valves arrangement according to  claim 1 , CHARACTERIZED in that the automatic suction valve and the semi-commanded suction valve comprise components physically independent of each other.