Lubricating oil supply apparatus of reciprocating compressor

Abstract

A lubricating oil supply apparatus of a reciprocating compressor comprises: an oil cylinder penetratingly-formed at a lower side of a frame, for supporting a compression unit which compresses a fluid; an oil piston reciprocatingly-inserted into the oil cylinder and reciprocated by a vibration of the compressor, for pumping lubricating oil; a spring connected to a rear side of the oil piston and providing an elastic force to the oil piston; and a valve assembly disposed at a front side of the frame, for opening and closing a passage of lubricating oil supplied to a sliding part of the compressing unit. A dead volume existing at the oil supply apparatus is reduced thereby to smoothly supply lubricating oil even at the time of an initial driving that requires less pumping amount, thereby enhancing a lubricating performance.

1 . A lubricating oil supply apparatus of a reciprocating compressor comprising: 
 an oil cylinder penetratingly-formed at a lower side of a frame, for supporting a compression unit which compresses a fluid;    an oil piston reciprocatingly-inserted into the oil cylinder and reciprocated by a vibration of the compressor, for pumping lubricating oil;    a spring connected to a rear side of the oil piston and providing an elastic force to the oil piston; and    a valve assembly disposed at a front side of the frame, for opening and closing a passage of lubricating oil supplied to a sliding part of the compressing unit.    
   
   
       2 . The apparatus of  claim 1 , wherein the oil cylinder is penetratingly-formed at a lower side of the frame in a longitudinal direction of the compressor,  
   
   
       3 . The apparatus of  claim 1 , wherein the oil cylinder is positioned to be higher than a surface of lubricating oil contained at a lower portion of the compressor case.  
   
   
       4 . The apparatus of  claim 1 , wherein the oil piston is disposed to be protruded towards a rear side of the oil cylinder.  
   
   
       5 . The apparatus of  claim 1 , wherein one side of the spring is connected to a rear side of the oil piston and another side thereof is connected to the frame.  
   
   
       6 . The apparatus of  claim 5 , wherein the spring is formed as a plate spring.