Equalization System of Compressors Pressure, Equalization Pressure Method and System Operation in Cooling Hermetic Compressors

Abstract

The present invention describes a valve mechanism for refrigerating machines compressors. More specifically, the valve mechanism operates to allow the equalization of pressure between the compression chamber of a reciprocating compressor and the discharge volume of the same compressor. This equalization is aimed at reducing the torque required for departure. The present invention lies in the field of mechanical engineering, more specifically in the field of fluid and cooling mechanics.

1 . Pressure equalization system for compressor characterized by:
 a. at least one primary valve mechanism provided pressure equalization means between the discharge volume and inlet volume; and   b. at least one secondary valve mechanism provided with means to hold the backflow of the pressurized working fluid comprised in the output line of the compressor;   wherein the primary valve mechanism is comprised upstream of the valve mechanism; and   wherein the secondary valve mechanism is downstream of the primary valve mechanism and in fluid communication with the compressor outlet line.   
     
     
         2 . System according to  claim 1 , characterized by the compressor being comprised within a hermetic volume enclosed in a hermetic case. 
     
     
         3 . System according to  claim 1 , characterized in that for cooling systems. 
     
     
         4 . The compressor pressure equalization method characterized by a pressure equalization system as defined in  claim 1  and in which the primary mechanism of valve promotes pressure equalization between the discharge volume and the intake volume at a time before the start of the compressor. 
     
     
         5 . Pressure equalization method, according to  claim 4 , characterized by said pressure equalization promotion be started by receiving a starting signal from the compressor. 
     
     
         6 . Use of compressor pressure equalization system, as defined in  claim 1 , characterized for being in hermetic compressor for refrigeration systems.